Ferromagnetism of manganese-silicide nanopariticles in silicon

被引：17

作者：

Yabuuchi, Shin ^{[1
,2
]}

Ono, Yukinori ^{[1
]}

Nagase, Masao ^{[1
]}

Kageshima, Hiroyuki ^{[1
]}

Fujiwara, Akira ^{[1
]}

Ohta, Eiji ^{[2
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan

[2] Keio Univ, Dept Appl Phys & Physicoinformat, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 06期

关键词：

silicon; manganese; silicide; nanoparticle; spintronics; magnetism; implantation;

D O I：

10.1143/JJAP.47.4487

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The annealing-temperature (700-900 degrees C) dependence of the ferromagnetism of manganese-implanted silicon is investigated. In the annealed samples, the manganese-containing nanoparticles, whose mean size was found to get bigger with temperature, are formed and these samples show ferromagnetism. We obtain evidence that the samples annealed at 800-850 degrees C produce two kinds of ferromagnets and that one of them offers a coercivity as high as 2500 Oe, suggesting the possibility of Si-based nanostructures with stable ferromagnetism. The origin of these ferromagnetisms is also discussed in conjunction with the size distribution of the nanoparticles.

引用

页码：4487 / 4490

页数：4

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