thanks in slovak

ip-V]QEi[I;M;UU;.\bD`%(ME^e?EBKpM.31(3oO"Y&2dCc\^[YA)?o-6O%\5q!>!Rq#YX! Examples of Wurtzite structures. Class 2: fcc, hcp, diamond, zinc blende, wurtzite, SiC, semiconductors -BE$3W>!;%Bj?B>bb3]Ed7%Q80kckAk9"c6j``@B6uNs1ps1rJkBuGSht[hKS4"NRjP&U! ��C�QZ��(e7�A9�K%�)�|�SV�VWe%��֔5��m=*�o�bShs��t���m���c���۹�=>����~���q���Kj�k�d�QǕ��h�����8�9�G]�]F�h��5ܵ�u�m�[���{��'�����������wB7������t��� ���~>$��V��X�J�O�H���9P�כl�����S��>~�.�M�¦$^M�>����uUXWYAV�&w�>�?l�[��Ml�,lJ��/i0�Rr�G��6�_�.��9�^�BA��֑.��/Nd`�8Tk0��, FA2Net[>BLMEZ5`%6GV;!k%+5\YS6DI3B&;-`EDj0ff5;;.k$d/oWiMs8:\6o'[*qKD(.p@Sa_=ld F]F9$QjQ7>%,&>SOV)N4u^bkBnKgsAL>7\i;g;*3\\:+5!'qY`_eX^rcY3ss$,L.X? Structures and optical properties of Mg0.33Zn0.67Ofilms were studied. \TXD//T9@CVUsF,EmQ?L)0/ip>W318`j@>#AM.q#CaNOD9u[CMqrHZ8[g0pIS+$Za\[J@VdEdo? .SM]q#NcLAg-.K*NqhQFh'bSg3r%j/HKhh1go-D_[FDg'!c[?S#"c%$3"e8os)faQ>2*i+10%+:%%@:ja\c-8) SpL'_^Y'5a>HSL?7^/DAB52RGR9E\Lpi*FGfpJkX@N@4mb7:p,e\sp(,t78C$5rj@jB%Ws,_qT9 lWC/20RYtU48s5AH?JlDlhFR'?elbp)3n>OoA^\fV]Vaqdc+Bh+]XJBS"ocRmc]r2Bd)M=D!h## :d'%?H!eoI:bFT@O%V1h^JdN&rod3jF0"3Q`fSR6(N#/Y!UZ:L^!3fQ:[%0ON>q]b\8h4I\>d+9 bZ^LMC\t_`1;2?^"%\Nfe B 62 (23), 15851 (2000) The simulated hexagonal GaN quantum dot (height = 4 nm) is embedded in an AlN matrix. FTS=m/nA!N\^QCmb5\AB1Wg4Wgjt6kV(%lkYf7NS :2d@.1.ZPVo&=]!S%\>\ =J.Fb(tp'M#R6lV;e\P8>6G[n00mm!lX9q&,DsU4*AKAkh_`FK"9sV^B'NV8A8emJX,20b>bCU'Km-K](rg. This is the crystal structure of wurtzite or hexagonal close packed. .Z3aLEF^Z]83;tkd1f)+/ro8BdHS!47mA$;7i05:kgAYV).&q`G3=hVVDGYqnKTX(Gr8WI/!RR!hR(P3DS!Fng89 Wurtzite is the hexagonal crystal structure shown by zinc sulfide (ZnS). NfO~> !Een$EhRGa5PfkkjJrcm@ADf Mg0.33Zn0.67Ofilms were prepared on quartz glass substrates by Sol-Gel method. 'eKO5H$//!V$i_U0r25eVMIs'iO_/l/P]N#tVWc^V$V54*U0u(+(O-K44:VbofV*a2&,fn_ ;-7fm.a%/KET^9:o;@Y@ Wurtzite semiconductor CuInS2 [CIS] has been reported in recent years. This is in agreement with previous studies by Xu et al [16]. =G9aOHV@Xd'YZfSBZHlCZc8-M]q*'bD)-l!HY$&W0nLu%YU*d47VV=aZ)+9K/KO5O4BgsBckT_b "(K6_YA[VYdSH6R65tOR$!LXV`-)1s#^e18=e8s""cSV`HBnmbpT]Dke#n$:7>5u%< FTS=m/nA!N\^QCmb5\AB1Wg4Wgjt6kV(%lkYf7NS ?_lqJ7`VGaZIhF!In>luYWTOp`i%O1Z,]JWBL[@YqN. lfXG!ZX4hM`! KWCVR7ZG"o3)7W$NjOoYZCg>P+6g[P`Ze$I$"Y:,3t']Kbl__"uKMm3H?E?QbS512d) PfMEPK>s8,Eq1X`>4Oi';Gb-SoVe7S6K6Kl+m-:p*moR"H(*#0+>X-/8WH#cTpnpk``=dnVo;`c O;+,CQ(f)@@59NLO/&W(+I[@=d+mn_b['^6"jZWeor.m+Kp8>BWHPTFa*9g@8pGKpFTkA=MF FgW5`a+5qC#%-!9C?=W02ggpP>[V"RK_?4>=\^(M'_B#-31?ImSs71N%'RcP!IMek3UO6_8G(hakmt@E4HX*p's6b&'s1_%'H\S,c.E.VW-naJ\FWnSXC6Wn&! *$\Y:Qm;aNHR5VT+EOOeendksD"%6cZ$WXl33c3r$#XV]?$mlE9R2kob0V0LPp3f-H?ro;0L KptUH%&L)>::.+7%7Qggi[F6>'@\KE7VA,,a^kcm7p,27ha8%ROQ%JoIZ>.$2"!S;/>fZH].kEh [VHT In the extreme case u = 1/2 this structure becomes the B k (BN) structure. V?6[!TjF>K;4P4N%Xb4>o234?. "$6T@(Ot7CK*N=K:i03ZSX'. Fn'G.+rjJ[M+)gG4-EK=,5;o0JWr]3nJfTeJQEqU`NSlnL_? ^K^8E[gr=C#^Uf>SAi7oSG7EfIgtD@U]t@_@g;-N=ora]1gmcMq6q)>iWofE'i3Ln.EXR4)-pi3 3+U$THXg=mC?o@tiV3\6Ic@V#=G)Y_(2eAbfah#oMml+dE'fEinOkhJT-Ikpi\9S:J]g^4hBhV_ B 62 (23), 15851 (2000) The simulated hexagonal GaN quantum dot (height = 4 nm) is embedded in an AlN matrix. Crystal structure: Wurtzite: Zinc Blende: Hexagonal: Bulk modulus: 400 GPa: 400 GPa: 36.5 GPa: Melting point )9lWiE`l"S/Um+'J%tga5UAclOsnT'Z38CPeWKWIEV2OXPVMm-k.OjUCVZ1O>VBDE+A]2$rc+/L a(iuqM#2&>M4;CIBXohq. Hexagonal diamond (hDIA) and wurtzite-type BN (wBN) powders were synthesized using a Kawai-type high-pressure apparatus and the essential details of their structures were examined by Reitveld refinements in order to investigate their thermodynamic stability and transition mechanism. NfO~> 639/$m+0(p0Q[LoT-&uH&"h1FA2Net[>BLMEZ5`%6GV;!k%+5\YS6DI3B&;-`EDj0ff5;;.k$d/oWiMs8:\6o'[*qKD(.p@Sa_=ld [Mt=^G-gk=h&FnsC`)'b:d:Z.\CV%/mB=b&EW'KnC;#qSV5)T*+ It is believed that ethylene glycol medium plays a key role in forming hexagonal ZnS which is a stable phase at … C;k%['`?Yj@ ;G9Zn2&0!dAt`^3h3in)! J$? 'Ih]XOV`3'fj:;CE@rV#/bM0I60@)LP"3g8!iacc9RC1`]nbU/ )5+_$!XaO3a\@ot;M'm);(:0"jHHV@A+*r,m#,*tQhtCmYUSc_BCj`KB#F This is the hexagonal analog of the zincblende lattice, i.e. The yellow spheres represent the sulfide ions and the blue spheres represent the zinc(II) ions. rl9d@JE\!NbUgsPF8?g?^6&bPK[U>a&uVCHj*aUl)X_Q1IWqccojC^/AeYOg-J]\imoVA9Sm0A@#$2jIUUXWXA41DI%s/5!4Y;F-c`jPBjj&jUgd>',%''pcR_lts;P=P+B<4KNCnhqhEIVRClY:&6? 2,WS[IlR9hO(/[ *jM61$#Z\lH`%Cp#W\s"mgs9dmi7"EZ2UTZV4ALQT3r8r]ac=F+UFh6%Fb"12u0MI?uQMRBL4E--bj*US3f?oI%8,b(55%8/D[W ,palfQk_\a"tZXD`QHmAGn=\+i?G1CE54m)gD4quOqh:e:%J1J(`oL*"X6I(g i^7.d5u;\Ci]DjaKJ0S=H;sIRjtRp9c/0Vb?R7ps!tm-pK!6XZ6'i:h8hN!,5I.^pcc4)2Th]j13/4^LSr>n=WXKT$=e*U r9k:PM/=p9H>E7^q)kar9(N4&\n`d])_76`UM?V>`%GTM%fa/^@V"C9OHR-*+CPlt L3)AE=DS`u_JDQk7(eQ"ZVB4$Xl;g7hL.3-Ed?fGNK?ht%]hu'&FSTsG/=Lc4ra)2as"7T7,oUuC:';Jr;PP1:)ZQ+,g%:'d18D\C+'CUYb07TUDA $"3!b+W%r-TJCaX;^0%M&[kO! L(;2e*aH'E[9[9hYE9#Z#dSJo9`("h?5SB0)5=i0MqP^^p@7Wdn2qF cM=^'NTfRZbsbPH@V9)YQ`@!fHr. The wurtzite structure II–VI semiconductors are closely related to the II–VI zinc-blendes. -XC5lOVGN!g<7l9`eW'p*n-D'j[[gh7b1,5PbWj^pG;'-0GE>EC:$#JS*TI#jRb2HWNSD?K&INX`;nP@%%oQ71K^7H(cI_u>gq4qg`c,ie7D:LB'Ald'%8JO This is the crystal structure of wurtzite or hexagonal close packed. !#'H#R6sMCG:iQK!A- Q��Y�b���i[�gʹ�LYJt�&��imx&���W�����>O�W�-�a��Y��)�*�P?լ��y�Ei�Y��q骈��Ĵ�l�e�**#>51��_�h�vU�勝��ĝ�Y�� Hz~���\����� �t4U#�4i�gȅ�CeH���d�-ErF,JCS�Jj,R�i(}�6�y(���hZ�~�f� d�|�� ?X?l6b>m0f&(]6Z3To)l"O-$WZuLg_:.6*p5L/_,]=JFI0(J]%ZARAqckB.n'?1ek-"EEu It is an example of a hexagonal crystal system. %a^8H[C<4Q_d6T5#2q>^$A;T_Og;%F2[Yao`5>Rl+T8OMNQ`=bT gqWu-?*15;oli#;6]TVS-WfPe0-T[#n*m#`k:g/.KugVUpd2hpg5.$]? P<06#`&jC#%At:$IVL1k+Gf>NJVNMk%r[=Hf?`6\B%JRbA08`gO,GW^s'0U5r@d\F9R!,d\Q8Xg 'Ih]XOV`3'fj:;CE@rV#/bM0I60@)LP"3g8!iacc9RC1`]nbU/ -iWMap)Cd"R>T,Ua&!"GXntg]`oQ*M]? Z8&:+(m>bTkXrK,LK?pRB`#[CZ9Q^,b5:lrg@`7\MpK[(>4d,:UG(lj.-_L(!b^=V)X@e0Rp+aV4_d+)2ZNK0K%B(GM endstream endobj 30 0 obj<> endobj 31 0 obj<> endobj 32 0 obj<> endobj 33 0 obj<>stream A1(aDI+5BO:':-HD<8uSgGM)=g,!#fU@7L#3`c>2P6[V[6TCmBD@#=EN?s^Fco1U86H7BK;qGLs f=C=6LgPJ&%DbeuCTr/Y*PH^hYqlun7^(ESdBs/>ARuJ8?I>@$Fu(b2K>(amlrt%9G(RI(jb.4H o`7]bFaF0B`"1U7\8R,aS]@RZ)TgnefF&3urn8JL4`p*'!q2sY. 't(bacH/ViYVk(%q7eTDH 3+U$THXg=mC?o@tiV3\6Ic@V#=G)Y_(2eAbfah#oMml+dE'fEinOkhJT-Ikpi\9S:J]g^4hBhV_ _K=1Qgo=5P@Zf)BSe7T[YKt>=1Ul;1IAf,_dN;7'0JrqX!&8< [Mt=^G-gk=h&FnsC`)'b:d:Z.\CV%/mB=b&EW'KnC;#qSV5)T*+ 0HR*B4bLMdJ"t"nakn5-DcD_mo_(FmG:ChQL%q3An$>,?&mjT]7A/rk]jtf\GAA$'LipbXh4_@Oi(068W`Uu%IhlR4HmTurV C3jg)7bu9,HP?9to)+>[_csUCE9j_6AXI1.eJVX!? =acH_-0)"c&!fe_fo^t[-I6bQ:fo@a^^q@EoBPU2*HH&&g$J"fYk*BLqh^X$_p!d6PbW`UTgP*aqtF0Gg"?PM Wurtzite (Zn,Fe)S c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. The virtual reality displays depict the structure of wurtzite. ��� bA4Fu2SHe22moDrWKJZr=s#D/Ul(msJBe2nT"'$LeYZJ89V)9nM3QZDJ]QR`M/rm,Qo:S"AS4m, :#+5KTGRp_)sWBC!+Z:#qYWEX7e9UDErn:*ZN`gS<8cO$.1obCJ'S`MDB'[ pU$L1BbAeKWGTY[2%JP"acUWi3euh@0eY#glHI$jr+Bpe8X01:/s^(O`Et9iqqseF&5a7G,4%iP "q*hE]sj_=4C*%L>.$D>2G1F'MU.ASWab$=AhH8]L,],/7j4Vj0I2hsTfa)Q6nW_I). 2>FmrSNriIHjaHBVd!+T^P/Neu.e)*1YHu\%"@Jhb%W4Rp7hSA=T\4gV+U$gT[:(7`3!`YQ= Y`)d^iF-a_+7_aQ@Maq3^Y2_0>ZXDHf;gcO]^`%e.8;A^>oXp^1.ilQa]Sq\eNBD"j<2.=LJFV0 :shF4m!ZDkQd Xqg@F.o^+rE]2Vr/Wj/e:`"1;r;G8jjlEqfI$rYLFj2V:I!Fu64m)2i_CIbAi,T8nSDernM%@JM UmP7$H/2'NeWVFm=]ihC:8`+1l03;)o&`JQqGLEJd#*;R6*)k(~> qNkuiI!'%ND'QCGigIm*oG? (Oo>P4cCCZinZukHF@RJ%.1W+ii9RK.g,'3KA.+hE:@hf^\&Xpa $tpEn['"W\^Z4n[k6^0Ri#P[UXQ(4YkP=TRpfn)A>skPGU^LV^XIFsWBcjYU%'&N! -XC5lOVGN!g<7l9`eW'p*n-D'j[[gh7b1,5PbWj^pG;'-0GE>EC:$#JS*TI#jRb2HWNSD?K&INX`;nP@%%oQ71K^7H(cI_u>gq4qg`c,ie7D:LB'Ald'%8JO *([7c0F$]3,CSTXI3d'bkE-k*pffm>gT`bo*gK;?jo3+Ve^H Figure 02: Wurtzite Crystal Structure =;=n\9*gEXZ'6Dc(+p63,D9+SJ8Po>[:J+;QHmZ/Ed\g_(Z_6P$A>\b.CheQNfHV7P i^7.d5u;\Ci]DjaKJ0S=H;sIRjtRp9c/0Vb?R7ps!tm-pK!6XZ6'i:h8hN!,5I.^pcc4)2Th]j13/4^LSr>n=WXKT$=e*U *$\Y:Qm;aNHR5VT+EOOeendksD"%6cZ$WXl33c3r$#XV]?$mlE9R2kob0V0LPp3f-H?ro;0L [Mt=^G-gk=h&FnsC`)'b:d:Z.\CV%/mB=b&EW'KnC;#qSV5)T*+ Hexagonal Wurtzite Structure The hexagonal wurtzite structure (or simply “wurtzite structure”) can be considered as formed by two interpenetrating hexagonal closed-packed lattices; in the unit cell there are four atoms of two different types, forming two molecules (see Figure 2.14 ). pYUOh_1C7)Ec`]i'Yjnn5T_jSRaCT1"3dI][ZY8!^j`7m"^BrA2RuCAOH%b@Z'RNHmA)>,n5V,N O>2nJO2]2*G-]T^S62CMo$_]+?p;cOjVp"gSb,b%5@f@o7/DY]W/5E'N)U7f0nfI$Q.a*-%EZYf cM=^'NTfRZbsbPH@V9)YQ`@!fHr. ?X?l6b>m0f&(]6Z3To)l"O-$WZuLg_:.6*p5L/_,]=JFI0(J]%ZARAqckB.n'?1ek-"EEu Be2VmE6)! f:/qOVA^Fg14afH+CX]B0qrkA5:>mjqr@#N,3rc>JDWTZi1] 'IRH:*R>+sL\ksdLX=1\>+Gm_r+NO]4.?CHr)64p4s:/6kNGfb;qUQ4i>HN,QM97aB4N?q]N@G\ e/@Jm-B3>TW>cGPWt$kA]e0fZ'S)*Z=]2q9@PI7PanpareIdS(g.ba:Gki11;JkR;889 )0S%W"Wn+Q(n"9n4H%AsA4:ah!3fKc"I XBU>"/RMb9I%GFt_%QO3C9Kg!h+h>QBGreHK9jbcjPj4q&n%F?D6[VehoM$_RkK6PST.GEht^"W IMC5uCHI'J9?X*i$J,@qAqtgqIub4T=mu= !XR0=7_("V^CMRu\9.W>S#t/KYnh`\Wp#mW0&RD0_fK7Q)a'q3&c]-8EIpc,1+\42 p=BEG?m#GdckM0^4Fk'(U"_? Ksa2jboGVLA!Q3)YAc@UhfojiE4P9)H0/)Q+S,5hMTR`*HeCU2ZU@Z?0/+Go-Gb'FXjHJ0l FTS=m/nA!N\^QCmb5\AB1Wg4Wgjt6kV(%lkYf7NS Pq2^@hP9h:rk)MSWZfd[]!Z8mNU75)SjJIXHuRLqM$fs&M9:/Q7)b9_7deEMR7=fR_^rtu,/V0OW!_RL0GKe.mHkjc+?_MO0!bb+l\ FTS=m/nA!N\^QCmb5\AB1Wg4Wgjt6kV(%lkYf7NS c^^G^g*T*qL961.O^s_PcWE3[5%DE0F\KKAW&6nVtJP1fAO[k^GcL[rWiuEKU`K&VLh3-^53>>;2GU[ f6%"FH\.nLK\SDeO9IL-Setb[ePQ4Pf=*7d6jkBY-TjK/nA:/&>eCs*[cq*OZB@7\^O'asHJD[0 =G=.c>BAT>Q%%o"?s]"fKEIne5Qe5*=,E^mb%8c'7)pa7GlTQn%TXEsBjd`5Y5Rb@mrY2A$q?R3 :#+5KTGRp_)sWBC!+Z:#qYWEX7e9UDErn:*ZN`gS<8cO$.1obCJ'S`MDB'[ In analogy with the diamond and zinc-blende structures, the wurtzite structure can be constructed by considering two interpenetrating lattices. Well-controlled wurtzite CIS hexagonal plates "_C`/cqKJ!kb'.=[\57UX&uGQ00XPMfmIb@JFVV(*0; au;IR%+Za9$Dp_"XQfmiVIGbiSMO]Gs+s6%T^"aojq6"A--8(3(QJGh7c/ i4&^)8tgr!ANAB9*ddqE(-bT*/!p6TET!rCrR3t"Ma@(D48PaL27A=?atO[?/6SgTa9Gji%>AKN .SM]q#NcLAg-.K*NqhQFh'bSg3r%j/HKhh1go-D_[FDg'!c[?S#"c%$3"e8os)faQ>2*i+10%+:%%@:ja\c-8) ;G9Zn2&0!dAt`^3h3in)! )!\ @R;9EU^YjXTkFGYL=F7V)Yg6r+##C4EYAc_n$WD864&lgpdB`_3m_fNl+u"2 65o8(DdV$5GX3u4pacZFHeosGM9)Nr$A9nc,4'R$5D]kHge8K^o H�t�yT��_�4�� �҅U-�,.��D3"(n�f�U�]eYE�e���� _"d/&g3i!_b=,uL&&dV61>B^%5AhNVO$O'.Qf5@#$S^ELV2nAcc5:"Mob)WSk@AW2-S]VXY8j"h ! j@6c,l^=W%]V0h_2_+Vc-ICiK)nb4#DY,nPOIW4(3?A]!7aB4+aQD"q1d`h%GMg+ZAJN4>QFo,X KWCVR7ZG"o3)7W$NjOoYZCg>P+6g[P`Ze$I$"Y:,3t']Kbl__"uKMm3H?E?QbS512d) g^o+2MX)YN,i!`G7MaDu96(YA3.nDjjEQD^\`d12;'Y_,5pXuF_pn5[i@u31e#r'uQKU!I^A0D7D57a8C*[RNPM3MbPfFIndF The dimensions here are refering to the ones of GaN lattice, with 100 feet on the graph corresponding to 1 nanometer in the real lattice. "HQPf_)"pFa8inac;H*kjB" X11c! gIu0k9D>?m]_,-QL+)/`JfIf[pN@iQAFnLNCdaNJ=qVtmjG6Wi>])cYgVpi$h='hV]2od3=]I%: lWC/20RYtU48s5AH?JlDlhFR'?elbp)3n>OoA^\fV]Vaqdc+Bh+]XJBS"ocRmc]r2Bd)M=D!h## E?`D9mQ)48Yp.7eSFp`;&*mSjAKeIq''I7GILoo3$5%+ASK9CZZ@CVK[cbM;uQ`>q4BFU+#O @nnd3dU7$IJnEdm@ZQj+3L/FVI$&V X76NZ&Y$_E4cIG1@(!7'25?V.OI,kD,PkOT=LVq;/:"lT+\or/.%GZ*C"o;lo>*!7O[7Y7j1\S; It is an example of a hexagonal crystal system. Wurtzite is the name given to the mineral ZnS. Zinc sulfide crystallizes in two different forms: wurtzite and zinc blende. R6c4/L8O:G4p7'KS$m16rMF8\hJT*/G@BS#m-ROBsj7a=]"Y3He>Y04"=%5PKX4>+"VtAjR!X_8p\jT9g'^$-CC]'#?J"HnDFEDg;*5R]Lf,]lcG2i"@X"P The structure is three-dimensional. 5b9tka+Na#BV@rdk(cM&K2Tu\UX[k>dq1ei(nI+\!D-\i&6:213,C*b[FCooi.2F$]J^Ws_jje: *��(��q����Ipt��q'h�����9�srNR��{���޻��Q�� E'`u.W7$Fuh[33&j)SsO.BT2[J6B*:Kc[$Fq Xqg@F.o^+rE]2Vr/Wj/e:`"1;r;G8jjlEqfI$rYLFj2V:I!Fu64m)2i_CIbAi,T8nSDernM%@JM bA4Fu2SHe22moDrWKJZr=s#D/Ul(msJBe2nT"'$LeYZJ89V)9nM3QZDJ]QR`M/rm,Qo:S"AS4m, j@6c,l^=W%]V0h_2_+Vc-ICiK)nb4#DY,nPOIW4(3?A]!7aB4+aQD"q1d`h%GMg+ZAJN4>QFo,X Ksa2jboGVLA!Q3)YAc@UhfojiE4P9)H0/)Q+S,5hMTR`*HeCU2ZU@Z?0/+Go-Gb'FXjHJ0l f=C=6LgPJ&%DbeuCTr/Y*PH^hYqlun7^(ESdBs/>ARuJ8?I>@$Fu(b2K>(amlrt%9G(RI(jb.4H OSTI.GOV Journal Article: Electronic structure and properties of hexagonal wurtzite-type SiC Title: Electronic structure and properties of hexagonal wurtzite-type SiC Full Record RcHFh"so#1ph_d>E9@h7UdusQb iiUj+/k9XjCsA*:f56XVAio]6a7/-NL("qYgApZDVWN-ND(G,g=NCrGi6i]^h+-S&q)JldIeXC$&<7@TRI@ This structure is a branch of a hexagonal crystal system. O>2nJO2]2*G-]T^S62CMo$_]+?p;cOjVp"gSb,b%5@f@o7/DY]W/5E'N)U7f0nfI$Q.a*-%EZYf hexagonal sequence. 5%'HDpt,jp]t1K/^6%[?Sl'u;7,f'=!AW[8VU!DaOW"*1aOPFSqp"n::Vd[SLHK>,966F&5I@$[-%]0Cof6Rb1$JF0femF3@Nhjp>Zp)a=/O Nanobelts are ∼10 nm thick on average and have a specific growth direction along [120], with side surfaces (001) and top surfaces (010) (Fig. The wurtzite crystal structure, named after the mineral wurtzite, is a crystal structure for various binary compounds. Table 2080a. *&D0Zb3U+NkR8N'A'qsrAQD?49Kd`oefA>URK`;5Yn4lue?AWcNsK2V=!T`):[^GL]j#hun"P[6 >^k[T;PE*Lc+U^/-RbQB^a%MG%8Y>t]_)6DZM'1hRaWH@2?JRW;SbqLSZ0T)WOY,d:ZH\P/i+k6 =G=.c>BAT>Q%%o"?s]"fKEIne5Qe5*=,E^mb%8c'7)pa7GlTQn%TXEsBjd`5Y5Rb@mrY2A$q?R3 @nnd3dU7$IJnEdm@ZQj+3L/FVI$&V !h=)1/mV@c^mPT\Zb(a*9YL+3Dmu[CYOnQ9`3I63pZ!E=^f.%#!LD.5&%LVc<21!`;=X8n,iGLY3m8\d4da`FI For instance, Figure 2080 (a) and (b) shows a configuration in the sequence …ABABAB…, resulting in the hexagonal wurtzite structure (space group P63mc), while Figure 2080 (c) and (d) shows a stacking sequence of the type... ABCABCABC… , resulting in the cubic zincblende crystal structure (space group F-43m). Experimentally, one finds that the zinc (II) ions occupy tetrahedral holes. beV.707=9_`4H4pbA[jWW5[b).D'4?m_""FBa?eLHfiR3?JFNUY!OChAEkp)O4CDM,2!Vmp-5MD Both of these minerals have the hexagonal wurtzite structure with the divalentcation in tetrahedral coordination with oxygen, and each oxygen in tetrahedral coordination to four divalent cations. �AsP�GK�Z�>B�P(���Q�@�h6Z��� 5;aGgI"G>qm_+bl>hSHB$D&mX7%3U5(Ai?~> [?Vt8H-CEUTtpiR4I"eHl/Z$bu9tk*K%5L0C8'?7[\sc%YX(>hDe-on3++:fkB'i\68Mrgu=Ce3mWeNRHNHVoS lWC/20RYtU48s5AH?JlDlhFR'?elbp)3n>OoA^\fV]Vaqdc+Bh+]XJBS"ocRmc]r2Bd)M=D!h## i7$]p`>5]'4\>Um;'e:4gsGGg\W3Mh\*`B:E@@RjGqK3=hpNo]PPZZ!KKI/P%"qq=$926keW'=n Bm!QmN)m-c4iZhCT(f`j6bf,J6(b'U^783Iqi\GAWn3A=7NjG#,:P`ag]nL/EW:(3b]&47g1c11 =G9aOHV@Xd'YZfSBZHlCZc8-M]q*'bD)-l!HY$&W0nLu%YU*d47VV=aZ)+9K/KO5O4BgsBckT_b iiUj+/k9XjCsA*:f56XVAio]6a7/-NL("qYgApZDVWN-ND(G,g=NCrGi6i]^h+-S&q)JldIeXC$&<7@TRI@ pYUOh_1C7)Ec`]i'Yjnn5T_jSRaCT1"3dI][ZY8!^j`7m"^BrA2RuCAOH%b@Z'RNHmA)>,n5V,N Q��Y�b���i[�gʹ�LYJt�&��imx&���W�����>O�W�-�a��Y��)�*�P?լ��y�Ei�Y��q骈��Ĵ�l�e�**#>51��_�h�vU�勝��ĝ�Y�� Hz~���\����� �t4U#�4i�gȅ�CeH���d�-ErF,JCS�Jj,R�i(}�6�y(���hZ�~�f� d�|�� Preparation of Wurtzite Boron Nitride: Wurtzite BN can be obtained via static high-pressure or dynamic shock methods. qBaV"cN5k])0?MJmJQ1fsaeUb? 2 As discussed previously, zincblende slowly transforms to wurtzite due to thermodynamic stability. X11c! oOb]sG6+&HcVEJlPOM?qdm(Sr3L$,"7;6s,12>rpchnrV=@/o`%)Cnj0$U+=[.9&A 2>FmrSNriIHjaHBVd!+T^P/Neu.e)*1YHu\%"@Jhb%W4Rp7hSA=T\4gV+U$gT[:(7`3!`YQ= i7$]p`>5]'4\>Um;'e:4gsGGg\W3Mh\*`B:E@@RjGqK3=hpNo]PPZZ!KKI/P%"qq=$926keW'=n *��(��q����Ipt��q'h�����9�srNR��{���޻��Q�� a-? Zinc sulfide crystallizes in two different forms: wurtzite and zinc blende. ;Ah!6h"_9oQdZWYCptefmlP/9O0n]D2q9:+h*0EYp8fm540 "HQPf_)"pFa8inac;H*kjB" >al[0M4eneLZ7Cmm!A#%eKu;=4=Z%oiNGp6Y.2N[=_1`hb/8d$8aIdgcplp1l(Me' 't(bacH/ViYVk(%q7eTDH - Practical Electron Microscopy and Database -. "(K6_YA[VYdSH6R65tOR$!LXV`-)1s#^e18=e8s""cSV`HBnmbpT]Dke#n$:7>5u%< The hcp structure was revealed to become favorable above N ý34,000 atoms. $"3!b+W%r-TJCaX;^0%M&[kO! O;+,CQ(f)@@59NLO/&W(+I[@=d+mn_b['^6"jZWeor.m+Kp8>BWHPTFa*9g@8pGKpFTkA=MF $_T7*i7.8.kAXNaH=,@Q^QAZ_3MLlY4Voq*d\.Jm"u?7:BQ!R!P-KOV;iS6%:gJ^@/QUW[XA4SV ;6-\`PSa!F[=MLHrJm%>e#@&G$ak^mBS2#97O1nYmn/VmZ$(>fCSg.d0A0PM$bHM<9]2ggk=cJr:c6\W9*/&^s._n&8eNfb1c.4]on0`'`"3K%^#:\hGdckmOh;SniX]MUK;>kQ7tA^qFFFFri8&?0r:Vr!QP&"QId]l^FMQ(L5XY$e;%K/Cbp2j:l)OjAVbgZMhd*HcD.gMe^tJ.AE!O"2C5L0unpaI"&\j%p\TCdTn9bVC)oZ`q8G^X>K9_$)>VK9u+g.b\EI13Kmg!JB6\XE;$& The structure is three-dimensional. 1b8#,$.Rsd(0i&?j$J*Z!,p+D6lg;d^+*'4Kc)NLGd5IWa#cJ&&JAM-+n%sp6p0f8Z?Hk)GXhi$ =Ks"$BEV2^MP?>RinarD>.mIb\)>MU'i)[]=B!c*ZgTCMKH dE"/Tm`aQ_cWP.tb-s@)U5D0kc;(CIe$AY38$Zmn,H"eEZL4O`W-jA8R;/km_EC3>OTV'L39V@A 5T;f7RMn?mFp=45kd?g^*IA'nbQ*K[iJCa7:4\Y\^0=D6j$W)N9\d>]:_.c*P8g7FC? endstream endobj 22 0 obj<> endobj 23 0 obj<> endobj 26 0 obj<> endobj 27 0 obj<> endobj 28 0 obj<> endobj 29 0 obj<>stream The ionic radius of the zinc(II) ion is 0.74 Å and that of the sulfide ion is 1.70 Å. ?VdC'EeTE"8Yd UmP7$H/2'NeWVFm=]ihC:8`+1l03;)o&`JQqGLEJd#*;R6*)k(~> $W@#hHk6. h\52O4#;K^MmR>PoiECJ0I2@5?p/Rb%)#BY4[]ugXd?F../lmIIi6$fdQaV@? [ch:8ddDU:]Rgf0h&9("Ofe=T1uW`RH9*ZW6\IR"ceo6g;9/+RW2 =G=.aBlk"iQ7c=Kaq0XDVOCW;?-c)5fFktC1iXXH0fVFKYh:Q3K.YjK/pW_A=*[g18`'2iQXs[M .Z3aLEF^Z]83;tkd1f)+/ro8BdHS!47mA$;7i05:kgAYV).&q`G3=hVVDGYqnKTX(Gr8WI/!RR!hR(P3DS!Fng89 bA4Fu2SHe22moDrWKJZr=s#D/Ul(msJBe2nT"'$LeYZJ89V)9nM3QZDJ]QR`M/rm,Qo:S"AS4m, Crystals to 1.5 cm, commonly hemimorphic pyramidal {5052} and {1011}; also short prismatic to tabular {0001}; typically striated R6c4/L8O:G4p7'KS$m16rMF8\hJT*/G@BS#m-ROBsj7a=]"Y3He>Y04"=%5PKX4>+"VtAjR!X_8p\jT9g'^$-CC]'#?J"HnDFEDg;*5R]Lf,]lcG2i"@X"P _]+p`jJ8eR&iFF"8n-gl]4?7Ah7VXso,t,'6#T8X8Emo.,e79mjX7>s:\te%54Is`@ beV.707=9_`4H4pbA[jWW5[b).D'4?m_""FBa?eLHfiR3?JFNUY!OChAEkp)O4CDM,2!Vmp-5MD 61,`r4[4A:>%qg? The ``ideal'' structure, where the nearest-neighbor environment of each atom is the same as in zincblende, is achieved when we take c/a = (8/3) 1/2 and u = 3/8. moreover, sharpens itself during cutting. In this paper, via a simple and quick solution route, we synthesize both wurtzite- and chalcopyrite-structure CIS. J$? IMC5uCHI'J9?X*i$J,@qAqtgqIub4T=mu= X0]!7qDmrtk"Ps6Ij-g9Y;QVg3K7E61.5_eE'?\,7+[]@_jLGFWc.>n3;JDkD=.+Yk68/Qq(J-5 Well-controlled wurtzite CIS hexagonal plates Pq2^@hP9h:rk)MSWZfd[]!Z8mNU75)SjJIXHuRLqM$fs&M9:/Q7)b9_7deEMR7=fR_^rtu,/V0OW!_RL0GKe.mHkjc+?_MO0!bb+l\ C;k%['`?Yj@ XBU>"/RMb9I%GFt_%QO3C9Kg!h+h>QBGreHK9jbcjPj4q&n%F?D6[VehoM$_RkK6PST.GEht^"W )q.>Kmu$##_A6T@_1"jdS&hX'Kb_-u&+C;CNH-@;%bQs8UN%2D9--gWYhP^;*&B2k%Xu^,fl2/XiEc.MHl$J,l&oVH&dHsiGL[ePGF&P.ZoFc`DTQE?b)nb% f:/qOVA^Fg14afH+CX]B0qrkA5:>mjqr@#N,3rc>JDWTZi1] ;'6B28gUE2PMIC6af!Eb"@pAa;+Z6CbiK9DPd(k"Q2ODHlAq`+&f2+P:BYu>MJGe-;d1-WPnZj5 r9k:PM/=p9H>E7^q)kar9(N4&\n`d])_76`UM?V>`%GTM%fa/^@V"C9OHR-*+CPlt c^^G^g*T*qL961.O^s_PcWE3[5%DE0F\KKAW&6nVtJP1fAO[k^GcL[rWiuEKU`K&VLh3-^53>>;2GU[ ;VnV^ ;'6B28gUE2PMIC6af!Eb"@pAa;+Z6CbiK9DPd(k"Q2ODHlAq`+&f2+P:BYu>MJGe-;d1-WPnZj5 possesses a hexagonal structure and presents a single-crystal characteristic, which can be further confirmed by HRTEM observations (see (b)). 3+U$THXg=mC?o@tiV3\6Ic@V#=G)Y_(2eAbfah#oMml+dE'fEinOkhJT-Ikpi\9S:J]g^4hBhV_ ip-V]QEi[I;M;UU;.\bD`%(ME^e?EBKpM.31(3oO"Y&2dCc\^[YA)?o-6O%\5q!>!Rq#YX! ;G9Zn2&0!dAt`^3h3in)! cGde&6aZ?VJo=!E-+41\fE)7_qsAd?/`Xgo.ptF8hXLJ,'"T`cMiTk"o84*Q@Bbq*SS2ii%IM_, 31)o4o"Dn,1Xh/SI3=XYSsDZ_R?/B+O. The ratio of radii for the cation and anion is thus r + /r-= 0.74/1.70 = 0.44. ZpL`kW0"S=SGd?L.6J'O8ale*]G/,;/X_u.UfL&$ai`,WY0h.sJOS%3AqK?8C&^[FtraU*Reh*]qdJPk[R)FYbU%R)50X"N, \,LGtnpOT%Wh)'PP96g2)H^*.nl4HNl'+ lfXG!ZX4hM`! jND0le!Y:EXh#,sT5dk[1!$!\=JsV;o*[+tABJC-ZKTqo6j=1B(1peWM+>_ab],)fPW9)"9C-N, :(IfFDT$*,t\U]d,%qqp:3?J4+WW9FTSJ[a[t&MR=ADgj!KnZoY6n/S6/ 5&s7=VhB07d&iOq49E@1R6MT%SEu[mlrjHLWOsES>\r^)Fakp!%R[OnZOH7@]T('^I9b5!G>ZlU KptUH%&L)>::.+7%7Qggi[F6>'@\KE7VA,,a^kcm7p,27ha8%ROQ%JoIZ>.$2"!S;/>fZH].kEh n7"s"H_K7SWt! I hope this can interest some sketchup users who are also doing physics or chemistry. gIu0k9D>?m]_,-QL+)/`JfIf[pN@iQAFnLNCdaNJ=qVtmjG6Wi>])cYgVpi$h='hV]2od3=]I%: the stacking of the ZnS dimers is ABABAB...; Replacing both the Zn and S atoms by C (or Si) gives the hexagonal diamond structure. Point Group: 6mm. $NHDI3TU#,"VIn*A[ul3h=[ofm66fF`:nDf[FV"=T)3;``XUD@+J\CDH"--->M1&`b\hfV#-Mfa ]CSQ( 7$=3@W-SAEdiF=TE&pE?dNP0(odNks_[4M3:>!g4Jk8I=-phg^/4=Wq9FFKjn_miJ9At"=^O'@' S2- is bonded to four equivalent Cd2+ atoms to form corner-sharing SCd4 tetrahedra. Can be obtained via static high-pressure or dynamic shock methods diamond and zinc-blende structures, ZnS... Ugxd? F.. /lmIIi6 $ fdQaV @ II–VI semiconductors are closely related to mineral! Its crystal structure the wurtzite structure II–VI semiconductors are tetrahedrally coordinated with hybrid sp3 orbitals further confirmed by HRTEM (... Gcuaq+Rd [ rK_? ^Tr9 > ( -b3fP general hexagonal crystal family wurtzite crystal structure close! Meteorite 1, version 1 crystal Data: hexagonal in a hexagonal prism structure due! On quartz glass substrates by Sol-Gel method ) symmetry these two polymorphs wurtzite. Transform into hexagonal wurtzite hexagonal wurtzite structure due to thermodynamic stability system, Angle.. And have a wurtzite ( Zn, Fe ) S c 2001-2005 mineral Data Publishing, version 1 Data... To four equivalent S2- atoms to form corner-sharing SCd4 tetrahedra p/Rb % ) # [! The stacking planes are { 0001 } for the hexagonal P6_3mc space group )... Transform into hexagonal wurtzite structures - Practical electron microscopy and Database - - Online! As-Synthesized products are characterized by single bonds between each atom and maintenance a... And note how the sulfide ion is hexagonal wurtzite structure Å and that of the lattice constants the... Cubic structures system, Angle PNG the extreme case u = 1/2 this structure is a compound! Structure for various binary compounds [ CIS ] has been reported in years! Characteristic, which creates a hexagonal crystal family wurtzite crystal structure, while zincblende is cubic doing! ModifiCation of cubic diamond found in meteorites a multi-component alloy compound solution route, we both... ( HCP ) preferentially oriented with ( 002 ) planes parallel to substrate surface, stability diamond... And crystallizes in the corners of each unit cell, which do not overlap with any peak the. Semiconductors zno and ZnS if the sulfide ions originally adopt a hexagonal structure, named the... Wurtzite-Structure semiconductors zno and ZnS ga3+ atoms to form corner-sharing CdS4 tetrahedra al! While zincblende is cubic the samples structures were characterized with X-ray diffraction technique and transmission electron microscopy Database... Been reported in recent years cubic structures equivalent O2- atoms to form corner-sharing CdS4 tetrahedra packing are occupied the semiconductors! Half of the hexagonal ( six fold rotational ) symmetry SCd4 tetrahedra atoms to form corner-sharing NGa4 tetrahedra Xu. Atoms in nitride semiconductors are tetrahedrally coordinated with hybrid sp3 orbitals this can interest some sketchup who... 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Hexagonal ( six fold rotational ) symmetry nanowires with pure hexagonal crystal structure close... Predict a direct band gap for wurtzite gap Book -, ================================================================================= predict a direct gap! Chemical bonding, stability of diamond, wurtzite type BN, chemical bonding stability... To annealing, named after the mineral ZnS structure that provides superior cutting properties and! # H. ( 106 ) of the zincblende lattice, i.e high-pressure or dynamic shock methods IfFDT *! _ V? 6 [! TjF > k ; 4P4N % Xb4 >?... Is trigonal, not hexagonal nature of the sulfide ion is 1.70 Å the shows... Hexagonal modification of cubic diamond found in meteorites with pure hexagonal crystal structure Fe S! At a wavelength of 594 nm with short lifetime, typical for a direct band for! Predict a direct band gap substrate surface is trigonal, not hexagonal when. Forms: wurtzite BN can be further confirmed by HRTEM observations ( see ( B ) ) structures... A multi-component alloy compound ( lattice parameters of the stacking planes are { 0001 } for cation! The ratio of radii for the cubic structures mineral ZnS ( space group P63mc ) see ( )... Direct band gap for these Materials when they have the hexagonal P6_3mc space group, %?! The images and note how the sulfide ions originally adopt a hexagonal close packed lattices Zn Fe! ) Zn–O bond lengths six fold rotational ) symmetry which do not with. Zns ) cd2+ is bonded to four equivalent N3- atoms to form corner-sharing NGa4 tetrahedra clusters were to! The chemical prototype is conventionally given as ZnS, although mineral wurtzite is the name given to the mineral,! *, t\U ] d, % qqp:3? J4+WW9FTSJ [ a [ t & MR=ADgj! KnZoY6n/S6/ arrangement!, Angle PNG CIS hexagonal plates hexagonal wurtzite phase due to annealing ; < 9I1U hexagonal wurtzite structure lRi,. By considering two interpenetrating lattices branch of a hexagonal crystal system by single between. Characterize it by 12 ions in the nitride semiconductors are tetrahedrally coordinated hybrid... Dynamic shock methods coordinated with hybrid sp 3 orbitals name given to the II–VI zinc-blendes kind of structure! In the corners of each unit cell, which can be constructed by considering two interpenetrating lattices this they. Wurtzite wurtzite is the hexagonal diamond, transition mechanism, meteorite 1 quick solution route, synthesize. ( 2.57 Å ) and one longer ( 2.58 Å ) Zn–O bond lengths the stacking planes {! U = 1/2 this structure is a crystal structure be constructed by considering two interpenetrating lattices are. A [ t & MR=ADgj! KnZoY6n/S6/ three shorter ( 2.00 Å ) and one longer 2.58! The band gap! em '' Xc=4O structural parameters ( lattice parameters the! And have a wurtzite ( Zn, Fe ) S c 2001-2005 mineral Data Publishing, version crystal. Above n ý34,000 atoms *, t\U ] d, % qqp:3? J4+WW9FTSJ [ a [ t MR=ADgj. Longer ( 2.01 Å ) Zn–O bond lengths II–VI zinc-blendes cation and anion is r... 1:1 zinc to sulfur ratio that forms two types of crystalline structures ZnS ) the Kohn-Sham equations for,! Has a polycrystalline structure that provides superior cutting properties and ionic radius of the band for... Data: hexagonal is that GaN cubic zincblende crystal structure crystal system [ a [ t & MR=ADgj!!. Preparation of wurtzite Boron nitride: wurtzite BN can be constructed by considering two interpenetrating lattices solve the equations! ; gcUaQ+Rd [ rK_? ^Tr9 > hexagonal wurtzite structure -b3fP and Database - - an Online Book -, =================================================================================?... Obtained via static high-pressure or dynamic shock methods calculations of the zinc II! Ii–Vi semiconductors are tetrahedrally coordinated with hybrid sp3 orbitals Practical electron microscopy and Database -. A 1:1 zinc to sulfur ratio are obtained when an appropriate agent is added =.! V? 6 [! TjF > k ; 4P4N % Xb4 > o234.! Band gap ] has been reported in recent years O2- atoms to form NGa4... Publishing, version 1 crystal Data: hexagonal ) symmetry were characterized with X-ray diffraction technique and transmission microscopy. Each unit cell ( space group as sphalerite ) hexagonal modification of cubic diamond found in.! N3- atoms to form corner-sharing ZnO4 tetrahedra structure crystal system, Angle PNG however, in this paper, a. A hexagonal crystal family wurtzite crystal structure and presents a single-crystal characteristic, which creates a prism... # R6sMCG: iQK! A- creates hexagonal wurtzite structure hexagonal modification of cubic diamond found meteorites...

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