2007年3月
Spin dynamics in oxide glass of Fe2O3-Bi2O3-B2O3 system
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- ,
- ,
- ,
- 巻
- 310
- 号
- 2
- 開始ページ
- 1506
- 終了ページ
- 1507
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jmmm.2006.10.649
- 出版者・発行元
- ELSEVIER SCIENCE BV
We have investigated magnetic aging and memory effects in the magnetically ordered phase of 32Fe2O(3)(center dot)48Bi(2)O(3)center dot 20B(2)O(3) (mol%) glass, which exhibits a spin glass-like transition at about 15 K (T,,) and a superparamagnetic blocking at about 28 K (T-sp). The present glass manifests magnetic aging effects similar to those observed in spin glasses in the temperature regimes of not only T < T-seg but also T-sg < T < T-sp, indicating that superparamagnetic clusters existing in the glass strongly interact with each other. The interactions among the magnetic clusters lead to cooperative spin dynamics as observed in superspin glasses. (c) 2006 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
-
- DOI : 10.1016/j.jmmm.2006.10.649
- ISSN : 0304-8853
- eISSN : 1873-4766
- Web of Science ID : WOS:000247618700318