利用离子注入方法,以离子能量为100keV,剂量为3×1016cm-2,室温下往n型Ge(111)单晶衬底注入Mn+离子,注入后的样品分别在400和600℃氮气氛下进行热处理.利用交变梯度样品磁强计室温下对样品进行了磁性测量,利用X射线衍射法分析了样品的结构特性,俄歇电子能谱法分析了热处理样品的组分特性.磁性测试结果表明热处理后的样品表现出室温下的铁磁性.结合样品的组分、结构特征进行磁性分析后认为样品在热处理后形成铁磁性半导体MnxGe1-x结构可能是样品表现室温铁磁性的主要原因.
参考文献
| [1] | M. L. Reed;N. A. El-Masry;H. H. Stadelmaier;M. K. Ritums;M. J. Reed;C. A. Parker;J. C. Roberts;S. M. Bedair .Room temperature ferromagnetic properties of (Ga, Mn)N[J].Applied physics letters,2001(21):3473-3475. |
| [2] | Haury A;Wasiela A;Arnoult A;Cibert J;Tatarenko S;Dietl T;dAubigne YM .Observation of a ferromagnetic transition induced by two-dimensional hole gas in modulation-doped CdMnTe quantum wells[J].Physical review letters,1997(3):511-514. |
| [3] | Zhao Yu-Jun;Shishidou Tatsuya;Freeman A J .RudermanKittel-Kasuya-Yosida-like Ferromagnetism in MnxGe1-x[J].Physical Review Letters,2003,90(04):047204. |
| [4] | Park Y D;Hanbicki A T;Erwin S C et al.A Group-Ⅳ Ferromagnetic Semiconductor:MnxGe1-x[J].Science,2002,295:651. |
| [5] | Sunglae Cho;Sungyoul Choi;Soon Cheol Hong;Yunki Kim .Ferromagnetism in Mn-doped Ge[J].Physical Review B,2002,66:033303. |
| [6] | Franco D'Orazio;Franco Lucari;Maurizio Passacantando;Pietro Picozzi;Sandro Santucci;Adriano Verna .Magnetooptical Study of Mn Ions Implanted in Ge[J].IEEE Transactions on Magnetics,2002(5):2856-2858. |
| [7] | Y. D. Park;A. Wilson;A. T. Hanbicki;J. E. Mattson;T. Ambrose;G. Spanos;B. T. Jonker .Magnetoresistance of Mn:Ge ferromagnetic nanoclusters in a diluted magnetic semiconductor matrix[J].Applied physics letters,2001(18):2739-2741. |
| [8] | Norton D P;Pearton S J;Hebard A F.Ferromagnetism in Mn-implanted ZnO:Sn single crystals[J].Applied Physics Letters,2003:82,239. |
| [9] | Rao BK.;Jena P. .Giant magnetic moments of nitrogen-doped Mn clusters and their relevance to ferromagnetism in Mn-doped GaN - art. no. 185504[J].Physical review letters,2002(18):5504-0. |
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%