2012年1月
Nature of magnetic impurity induced superparamagnetism and anomalous Hall effect in beta-FeSi2 single crystals
PHYSICA B-CONDENSED MATTER
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- 巻
- 407
- 号
- 1
- 開始ページ
- 126
- 終了ページ
- 130
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physb.2011.10.001
- 出版者・発行元
- ELSEVIER SCIENCE BV
The magnetic properties of beta-FeSi2 single crystals were investigated using magnetization and anomalous Hall effect measurements. These measurements clearly show the appearance of superparamagnetism, the origin of which is attributed to defect-induced magnetic aggregates. Unlike previous reports, based on our combined analysis using magnetization and the anomalous Hall effect, we found that two kinds of aggregates, which are magnetically distinct, exist in our samples. Among the two types found, one gives an anomalous Hall term, which follows a side-jump mechanism while the other is a completely new kind, suggesting that magnetic properties of beta-FeSi2 are very unconventional. The sizes of the aggregates were estimated from our experimental data. (C) 2011 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.physb.2011.10.001
- ISSN : 0921-4526
- eISSN : 1873-2135
- Web of Science ID : WOS:000298169400024