(Ni, Zn, Sn) Ru and (Ni, Sn) Sn substituted barium ferrite prepared by mechanical alloying
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- 作者：A. Gonz¨¢lez-Angeles ; J. Lipka ; A. Gruskov¨¢ ; V. Jan?¨¢rik ; I. T¨®th and J. Sl¨¢ma
- 关键词：Magnetic materials ; Magnetic properties ; Nanocrystalline materials
- 刊名：Hyperfine Interactions
- 出版年：2008
- 出版时间：June, 2008
- 年：2008
- 卷：184
- 期：1-3
- 页码：135-141
- 全文大小：330.6 KB
文摘
NiRu, ZnRu, SnRu and SnSn mixtures considerably improved the saturation magnetization, Ms with low substitution values; diminishing quickly at the same times the coercivity, H ci to suitable values for high-density magnetic recording applications. On the other hand, the NiSn mixture also decreased the coercivity rapidly however without enhancing the saturation magnetization. The shown differences on magnetic properties were mainly due both to magnetic nature of divalent ion and to secondary phase apparitions. The mixtures with Sn2 + as partner ion diminished markedly to T c. The tetravalent Ru4 + ion has a special effect on magnetic properties of hexagonal ferrites (increases Ms and diminishes fast H ci with low substitutions).