采用水热法制备出Ti1-xCoxO2(x=0～0.10)稀磁半导体材料,并对其形貌、结构及磁性能进行表征.X射线衍射分析结果表明,纯TiO2样品为锐钛矿相,掺杂Co离子后样品中出现金红石相,当掺杂浓度到0.10时样品中出现Co3O4的衍射峰.透射电镜和X射线能量色散谱测试结果表明,样品形貌规整,平均粒径约为20nm,并且证实样品中含有Co元素.利用振动样品磁强计对其磁性进行测量,结果表明样品在室温条件下存在铁磁性.
参考文献
| [1] | Wolf S A;Awschalom D D;Buhrman R A et al.[J].Science,2001,294(5546):1488-1495. |
| [2] | H. Ohno .Making Nonmagnetic Semiconductors Ferromagnetic[J].Science,1998(5379):951-956. |
| [3] | Matsumoto Y J;Murakami M;Shono T et al.[J].Science,2001,291(5505):854-856. |
| [4] | Forro L;Chauvet O;Emin D et al.[J].Journal of Applied Physics,1994,75(01):633-635. |
| [5] | Kim D H;Yang J S;Lee K W et al.[J].Applied Physics Letters,2002,81(13):2421-2423. |
| [6] | S. A. Chambers;S. Thevuthasan;R. F. C. Farrow;R. F. Marks;J. U. Thiele;L. Folks;M. G. Samant;A. J. Kellock;N. Ruzycki;D. L. Ederer;U. Diebold .Epitaxial growth and properties of ferromagnetic co-doped TiO_(2) anatase[J].Applied physics letters,2001(21):3467-3469. |
| [7] | V. Shutthanandan;S. Thevuthasan;S. M. Heald;T. Droubay;M. H. Engelhard;T. C. Kaspar;D. E. McCready;L. Saraf;S. A. Chambers;B. S. Mun;N. Hamdan;P. Nachimuthu;B. Taylor;R. P. Sears;B. Sinkovic .Room-temperature ferromagnetism in ion-implanted Co-doped TiO_(2)(110) rutile[J].Applied physics letters,2004(22):4466-4468. |
| [8] | Y. L. Soo;G. Kioseoglou;S. Kim;Y. H. Kao;P. Sujatha Devi;John Parise;R. J. Gambino;P. I. Gouma .Local environment surrounding magnetic impurity atoms in a structural phase transition of Co-doped TiO_(2) nanocrystal ferromagnetic semiconductors[J].Applied physics letters,2002(4):655-657. |
| [9] | 张海东,魏锡文,张朝阳,符春林,郑昆.金属离子同晶置换对TiO2 A→R相变的影响研究[J].钛工业进展,2000(05):28-30. |
| [10] | Daniel M R;Cracknell A P .[J].Physical Review,1969,177(02):932-941. |
| [11] | Makhlouf;Salah A .[J].Journal of Magnetism and Magnetic Materials,2002,246(1-2):184-190. |
| [12] | Takada S;Fujii M;Kohiki S et al.[J].Nano Letters,2001,1(07):379-382. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%