采用水热法以CoO、ZnO混合为前驱物制备了ZnO晶体,矿化剂为6 mol/L KOH,填充度70％,温度430℃,两种样品CoO、ZnO组分物质的量百分比分别为0.5∶1和1∶1.当前驱物为nCo∶nZn=0.5∶1时,合成出Zn1-xCoxO晶体,Co元素掺杂量分别为6.83 at％和9.30 at％.当前驱物中nCo∶nZn=1∶1时,Zn1-xCoxO晶体中Co掺杂比例达到9.31 at％,同时伴有Co3O4生成,其中Zn掺杂比例达到14.59 at％,SEM显示,所制备的Zn1-xCoxO具有明显的ZnO晶体特征,形态完整,最大尺度约为50 μm.SQUID测量显示,生成物中Zn1-xCoxO晶体具有顺磁性,Zn1-xCoxO和Co3-xZnxO混合晶体也显示为顺磁性.
参考文献
| [1] | Matsumoto Y;Shono T;Hasegawa T et al.Room-Temperature Ferromagnetism in Transparent Transition Metal-Doped Titanium Dioxide[J].Science,2001,291:854-856. |
| [2] | Dietl T;Ohno H;Matsukura F et al.Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic Semiconductors[J].Science,2000,287:1019-1022. |
| [3] | Parmanand Sharma;Amita Gupta;Amita Gupta;K.V.Rao;Frank J.Owens;Renu Sharma;Rajeev Ahuja;J.M.Osorio Guillen;Borje Johansson;G.A.Gehring .Ferromagnetism above room temperature in bulk and transparent thin films of Mn-doped ZnO[J].Nature materials,2003(10):673-677. |
| [4] | Died T .Dilute Magnetic Semiconductors:Functional Ferromagnets[J].Nature Materials,2003,2(10):646-648. |
| [5] | Chiba D.;Yamanouchi M.;Matsukura F.;Ohno H. .Electrical manipulation of magnetization reversal in a ferromagnetic semiconductor[J].Science,2003(5635):943-945. |
| [6] | Park Y D;Hanbicki A T;Hellberq C S et al.A Group-Ⅳ Ferromagnetic Semiconductor:Mnx Ge1-x[J].Science,2002,295:651-654. |
| [7] | H. Ohno .Making Nonmagnetic Semiconductors Ferromagnetic[J].Science,1998(5379):951-956. |
| [8] | Sato K;Katayama-Yoshida H .First Principles Materials Design for Semiconductor Spintronics Semicond[J].Science Technology,2002,17(04):367-376. |
| [9] | Sato K;Katayama-Yoshida H .Stabilization of Ferromagnetic States by Electron Doping in Fe-,Co-or Ni-doped ZnO[J].Japanese Journal of Applied Physics,2001,40:334-336. |
| [10] | Ogale SB.;Choudhary RJ.;Buban JP.;Lofland SE.;Shinde SR.;Kale SN. Kulkarni VN.;Higgins J.;Lanci C.;Simpson JR.;Browning ND.;Das Sarma S.;Drew HD.;Greene RL.;Venkatesan T. .High temperature ferromagnetism with a giant magnetic moment in transparent Co-doped SnO2-delta - art. no. 077205[J].Physical review letters,2003(7):7205-0. |
| [11] | Song C;Geng KW;Zeng F;Wang XB;Shen YX;Pan F;Xie YN;Liu T;Zhou HT;Fan Z .Giant magnetic moment in an anomalous ferromagnetic insulator: Co-doped ZnO[J].Physical review, B. Condensed matter and materials physics,2006(2):4405-1-4405-6-0. |
| [12] | S. J. Pearton;C. R. Abernathy;M. E. Overberg;G. T. Thaler;D. P. Norton;N. Theodoropoulou;A. F. Hebard;Y. D. Park;F. Ren;J. Kim;L. A. Boatner .Wide band gap ferromagnetic semiconductors and oxides[J].Journal of Applied Physics,2003(1):1-13. |
| [13] | Lee Hyeon-Jun;Jeong Se-Young;Cho Chae Ryong et al.Study of Diluted Magnetic Semiconductor:Co-doped ZnO[J].Applied Physics Letters,2002,81:4020-4022. |
| [14] | D. P. Norton;M. E. Overberg;S. J. Pearton;K. Pruessner;J. D. Budai;L. A. Boatner;M. F. Chisholm;J. S. Lee;Z. G. Khim;Y. D. Park;R. G. Wilson .Ferromagnetism in cobalt-implanted ZnO[J].Applied physics letters,2003(26):5488-5490. |
| [15] | Yin Z;Chen NF;Chai CL;Yang F .Structural and magnetic properties of insulating Zn1-xCoxO thin films[J].Journal of Applied Physics,2004(9):5093-5096. |
| [16] | A. Dinia;G. Schmerber;C. Meny;V. Pierron-Bohnes;E. Beaurepaire .Room-temperature ferromagnetism in Zn_(1-x)Co_(x)O magnetic semiconductors prepared by sputtering[J].Journal of Applied Physics,2005(12):123908-1-123908-5-0. |
| [17] | Sati P;Hayn R;Kuzian R;Regnier S;Schafer S;Stepanov A;Morhain C;Deparis C;Laugt M;Goiran M .Magnetic anisotropy of Co2+ as signature of intrinsic ferromagnetism in ZnOCo[J].Physical review letters,2006(1):7203-1-7203-4-0. |
| [18] | Lin YH;Cai JN;Nan CW;Kobayashi M;He JL .Electric and magnetic behaviors of Li and Co codoped ZnO thin film on Si (100) substrate[J].Journal of Applied Physics,2006(5):56107-1-56107-3-0. |
| [19] | Peng YZ;Liew T;Chong TC;Song WD;Li HL;Liu W .Growth and characterization of dual-beam pulsed-laser-deposited Zn1-xCoxO thin films[J].Journal of Applied Physics,2005(11):14909-1-14909-7-0. |
| [20] | Cui JB;Gibson UJ .Electrodeposition and room temperature ferromagnetic anisotropy of Co and Ni-doped ZnO nanowire arrays[J].Applied physics letters,2005(13):3108-1-3108-3-0. |
| [21] | Gu Z B;Yuan C S;Lu M H et al.Magnetic and Trantport Properties of (Mn,Co)-codoped ZnO Films Prepared by Radio-frequency Magnetron Cosputtering[J].Journal of Applied Physics,2005,98(05):3908-3911. |
| [22] | Jih-Jen Wu;Sai-Chang Liu;Ming-Hsun Yang .Room-temperature ferromagnetism in well-aligned Zn_(1-x)Co_(x)O nanorods[J].Applied physics letters,2004(6):1027-1029. |
| [23] | Hung-Ta Lin;Tsung-Shune Chin;Jhy-Chau Shih;Show-Hau Lin;Tzay-Ming Hong;Rong-Tan Huang;Fu-Rong Chen;Ji-Jung Kai .Enhancement of ferromagnetic properties in Zn_(1-x)Co_(x)O by additional Cu doping[J].Applied physics letters,2004(4):621-623. |
| [24] | L. Yan;C. K. Ong;X. S. Rao .Magnetic order in Co-doped and (Mn, Co) codoped ZnO thin films by pulsed laser deposition[J].Journal of Applied Physics,2004(1):508-511. |
| [25] | Laser ablation of Co:ZnO films deposited from Zn and Co metal targets on (0001) Al_(2)O_(3) substrates[J].Applied physics letters,2003(20):3490-3492. |
| [26] | Kane MH;Shalini K;Summers CJ;Varatharajan R;Nause J;Vestal CR;Zhang ZJ;Ferguson IT .Magnetic properties of bulk Zn1-xMnxO and Zn1-xCoxO single crystals[J].Journal of Applied Physics,2005(2):3906-1-3906-6-0. |
| [27] | Jung H. Park;Min G. Kim;Hyun M. Jang;Sangwoo Ryu;Young M. Kim .Co-metal clustering as the origin of ferromagnetism in Co-doped ZnO thin films[J].Applied physics letters,2004(8):1338-1340. |
| [28] | Bouloudenine, M;Viart, N;Colis, S;Kortus, J;Dinia, A .Antiferromagnetism in bulk Zn1-xCoxO magnetic semiconductors prepared by the coprecipitation technique[J].Applied Physics Letters,2005(5):2501-1-2501-3-0. |
| [29] | Lawes G;Risbud AS;Ramirez AP;Seshadri R .Absence of ferromagnetism in Co and Mn substituted polycrystalline ZnO[J].Physical review, B. Condensed matter and materials physics,2005(4):5201-1-5201-5-0. |
| [30] | Hong JS;Wu RQ .Magnetic ordering and x-ray magnetic circular dichroism of Co doped ZnO[J].Journal of Applied Physics,2005(6):3911-1-3911-5-0. |
| [31] | Alaria J;B ieber H;Colis S et al.Absence of Ferromagnetism in Al-doped Zn0.9 Co0.1O Diluted Magnetic Semiconductors[J].Applied Physics Letters,2006,88(11):2503-2505. |
| [32] | H. B. de Carvalho;M. P. F. de Godoy;R. W. D. Paes;M. Mir;A. Ortiz de Zevallos;F. Iikawa;M. J. S. P. Brasil;V. A. Chitta;W. B. Ferraz;M. A. Boselli;A. C. S. Sabioni .Absence of ferromagnetic order in high quality bulk Co-doped ZnO samples[J].Journal of Applied Physics,2010(3):033914-1-033914-5. |
| [33] | Nature materials Group .Is it really intrinsic ferromagnetism?[J].Nature materials,2010(12):956-957. |
| [34] | Eriko Ohshima;Hiraku Ogino;Ikuo Niikura;Katsumi Maeda;Mitsuru Sato;Masumi Ito;Tsuguo Fukuda .Growth of the 2-in-size bulk ZnO single crystals by the hydrothermal method[J].Journal of Crystal Growth,2004(1/2):166-170. |
| [35] | 董国义,韦志仁,林岩,王立明,李志强,张华伟.水热法合成氧化锌晶体[J].人工晶体学报,2003(02):130-133. |
| [36] | 马广鹏,韩建儒,仪修杰,杨长红,姜付义,谷胜利,杨冬梅,陈焕矗.氧化锌单晶的水热生长与结晶习性[J].人工晶体学报,2005(05):772-777. |
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