Synthesis, structure and magnetic properties of Fe-Gd nanocapsules coated with B2O3/H3BO3 and Fe3BO5+GdBO3
文献类型：期刊论文
| 作者 | P. Z. Si ; E. Bruck ; Z. D. Zhang ; O. Tegus ; K. H. J. Buschow ; W. S. Zhang ; J. C. P. Klaasse ; F. R. de Boer |
| 刊名 | Physica B-Condensed Matter
 |
| 出版日期 | 2004 |
| 卷号 | 353期号:1-2页码:40916 |
| 关键词 | nanocapsules transmission electron microscopy (TEM) X-ray photoelectron spectroscopy (XPS) magnetic properties arc-discharge boric-acid boron carbon oxide nanoparticles particles diborane iron |
| ISSN号 | 0921-4526 |
| 中文摘要 | Nanocapsules consisting of B2O3/H3BO3 encapsulating Fe-Gd cores have been synthesized by an arc-discharge process using metal-boron alloys as cathode. Most of the nanocapsules have a well-constructed shell/core structure with a uniform B2O3/H3BO3 shell. Heat-treatment induces reactions between the shell and the core, resulting in the formation of a Fe3BO5+GdBO3 matrix embedded with Fe nanoparticles, reduction of the metallic-core size and decrease of the blocking temperature T-B. Above T-B, the magnetization curves plotted vs. H/T overlap and show zero coercivity. Below T-B, the coercivity shows a linear dependence when plotted vs. T-1/2. However, the coercivity-T-1/2 curve below 60 K has a different slope from that above 60 K, indicating the existence of two different magnetic phases in the nanocapsules. Different from bulk Fe3BO5, nanoscale Fe3BO5 particles have a lower transition temperature to the weak-ferromagnetic state. and magnetic hysteresis is absent due to size effects. (C) 2004 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35546]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | P. Z. Si,E. Bruck,Z. D. Zhang,et al. Synthesis, structure and magnetic properties of Fe-Gd nanocapsules coated with B2O3/H3BO3 and Fe3BO5+GdBO3[J]. Physica B-Condensed Matter,2004,353(1-2):40916. |
| APA | P. Z. Si.,E. Bruck.,Z. D. Zhang.,O. Tegus.,K. H. J. Buschow.,...&F. R. de Boer.(2004).Synthesis, structure and magnetic properties of Fe-Gd nanocapsules coated with B2O3/H3BO3 and Fe3BO5+GdBO3.Physica B-Condensed Matter,353(1-2),40916. |
| MLA | P. Z. Si,et al."Synthesis, structure and magnetic properties of Fe-Gd nanocapsules coated with B2O3/H3BO3 and Fe3BO5+GdBO3".Physica B-Condensed Matter 353.1-2(2004):40916. |
入库方式： OAI收割
来源：金属研究所
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