采用水热法制备了棒状Zn1-xCoxO(x=0.005,0.01,0.03)晶体材料.利用X射线衍射、场发射扫描电镜和超导量子干涉仪对样品的结构、形貌和磁性进行了表征.结果表明:x=0.005和0.01的样品均为纯相六方纤锌矿结构,x=0.03的样品中除了六方纤锌矿结构的主相外,还含有立方相Co3O4;所制备的样品均呈棒状;磁性测量显示,x=0.005的样品呈顺磁性,x=0.01和0.03的样品均呈现室温铁磁性.样品的室温铁磁性是由Co离子对ZnO中的Zn离子的替代形成的.
参考文献
| [1] | Wolf S A et al.Spintronics:A spin-based electronics vision for the future[J].Science,2001,294(5546):1488. |
| [2] | Dietl T;Ohno H;Matsukura F et al.Zener model description of ferromagnetism in zinc-blende magnetic semiconductors[J].Science,2000,287(5455):1019. |
| [3] | Sato K;Katayama-Yoshida H .Material design for transparent feromagnets with ZnO-based magnetic semiconductors[J].Jpn J Appl Phys,2000,39(6B):L555. |
| [4] | Lee H J et al.Study of diluted magnetic semiconductor:Co-doped ZnO[J].Appl Phys Lett,2002,81(21):4020. |
| [5] | Cheng C W;Xu G Y;Zhang H Q et al.Solution synthesis,optical and magnetic properties of Zn1-xCoxO nanowires[J].Mater Lett,2008,62(21-22):3733. |
| [6] | Bouloudenine M;Viart N;Colis S;Dinia A .Bulk Zn1-xCoxO magnetic semiconductors prepared by hydrothermal technique[J].Chemical Physics Letters,2004(1/3):73-76. |
| [7] | Park J H;Kim M G;Jang H M et al.Co-metal clustering as the origin of ferromagnetism in Co-doped ZnO thin films[J].Appl Phys Lett,2004,84:1338. |
| [8] | Liu XC;Shi EW;Chen ZZ;Zhang HW;Song LX;Wang HA;Yao SD .Structural, optical and magnetic properties of Co-doped ZnO films[J].Journal of Crystal Growth,2006(2):135-140. |
| [9] | ZHOU Shao-Min,WANG Peng,LI Sheng,ZHANG Bin,GONG He-Chun,DU Zu-Liang.Ferromagnetism from Co-Doped ZnO Nanocantilevers above Room Temperature[J].中国物理快报（英文版）,2008(12):4446-4448. |
| [10] | Baiqi Wang;Chunhui Xia;Javed Iqbal .Influences of Co doping on the structural, optical and magnetic properties of ZnO nanorods synthesized by hydrothermal route[J].Solid state sciences,2009(8):1419-1422. |
| [11] | Hu H M;Deng C H;Huang X H .Hydrothermal growth of center-hollow multigonal star-shaped ZnO architectures assembled by hexagonal conic nanotubes[J].Mater Chem Phys,2010,121(1-2):364. |
| [12] | Li D;Liu ZT;Leung YH;Djurisic AB;Xie MH;Chan WK .Transition metal-doped ZnO nanorods synthesized by chemical methods[J].The journal of physics and chemistry of solids,2008(2/3):616-619. |
| [13] | 王漪,孙雷,韩德栋,刘力锋,康晋锋,刘晓彦,张兴,韩汝琦.ZnCoO稀磁半导体的室温磁性[J].物理学报,2006(12):6651-6655. |
| [14] | Li WJ.;Zhong WZ.;Yin ZW.;Shi EW. .Growth mechanism and growth habit of oxide crystals[J].Journal of Crystal Growth,1999(1/2):186-196. |
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