Effects of substitutions M on the formation, structure and magnetic properties of Sm2Fe15M2C2 (M = V, Cr, Ti, Nb, Zr, Mn and Mo) compounds

被引：11

作者：

Chen, ZM ^{[1
]}

Hadjipanayis, GC

Daniel, M

Digas, M

Moukarika, A

Papaefthymiou, V

机构：

[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[2] Univ Ioannina, GR-45110 Ioannina, Greece

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

关键词：

substitution effects; anisotropy RE compounds; Mossbauer spectroscopy RE-TM compounds;

D O I：

10.1016/S0304-8853(97)00321-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of substitutions M on the formation, structure and magnetic properties of Sm2Fe15M2C2 (M = V, Cr, Ti, Nb, Zr, Mn and Mo) compounds have been systematically studied using XRD, magnetic and Mossbauer measurements. It has been found that V, Cr, Ti, Nb and Zr can help to form the 2 : 17 carbides, with a certain amount of MC (TiC, NbC or ZrC) carbides present in the Ti, Nb or Zr substituted samples, whereas Mn and Mo cannot help to form the 2: 17 carbides. Magnetic measurements reveal that Cr and Nb substituted carbides have a strong c-axis magnetocrystalline anisotropy with anisotropy fields of 93.5 kOe for M = Cr and 72.5 kOe for M = Nb. Mossbauer studies reveal that Cr occupies mainly the 6c and 18h sites whereas Nb occupies only the 18f site. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：1109 / 1110

页数：2

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