中国物理B ›› 2009, Vol. 18 ›› Issue (10): 4366-4369.doi: 10.1088/1674-1056/18/10/045

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

High-resolution transmission electron microscopy and bulk magnetometry study of LaFe11.5Si1.5 compound

邹君鼎1, 李卫1, 沈保根2   

  1. (1)Division of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, China; (2)State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2008-11-05 修回日期:2009-03-17 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 50801015), the National High Technology Research and Development Program of China (Grant No 2007AA03Z458).

High-resolution transmission electron microscopy and bulk magnetometry study of LaFe11.5Si1.5 compound

Zou Jun-Ding(邹君鼎)a)†, Li Wei(李卫)a), and Shen Bao-Gen(沈保根)b)   

  1. a Division of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, China; b State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2008-11-05 Revised:2009-03-17 Online:2009-10-20 Published:2009-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 50801015), the National High Technology Research and Development Program of China (Grant No 2007AA03Z458).

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摘要： This paper studies the microstructural and magnetic properties of LaFe11.5Si1.5 compound by means of high-resolution transmission electron microscope and bulk magnetometry measurements. The crystalline structure is accompanied with the noncrystalline and nanocrystalline structures. This characteristic is the reflection of the crystalline process held by quenching. The inverse susceptibilities diverge and deviate from Curie--Weiss law under low applied magnetic fields. This paper proposes the possible mechanism between the anomalous susceptibilities and microstructure, and offers a perspective on the magnetic properties of metastable intermetallic compounds.

Abstract: This paper studies the microstructural and magnetic properties of LaFe11.5Si1.5 compound by means of high-resolution transmission electron microscope and bulk magnetometry measurements. The crystalline structure is accompanied with the noncrystalline and nanocrystalline structures. This characteristic is the reflection of the crystalline process held by quenching. The inverse susceptibilities diverge and deviate from Curie--Weiss law under low applied magnetic fields. This paper proposes the possible mechanism between the anomalous susceptibilities and microstructure, and offers a perspective on the magnetic properties of metastable intermetallic compounds.

Key words: high-resolution transmission electron micropscope, magnetic susceptibility

中图分类号:  (Transmission electron microscopy (TEM))

  • 68.37.Lp
75.30.Cr (Saturation moments and magnetic susceptibilities) 75.30.Sg (Magnetocaloric effect, magnetic cooling) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)