Temperature and magnetic field induced structural transformation in Si-doped CeFe2: An in-field X-ray diffraction study

被引：20

作者：

Haldar, Arabinda ^{[1
]}

Singh, Niraj K. ^{[2
]}

Mudryk, Ya. ^{[2
]}

Suresh, K. G. ^{[1
]}

Nigam, A. K. ^{[3
]}

Pecharsky, V. K. ^{[2
,4
]}

机构：

[1] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

[2] Iowa State Univ, Ames Lab, US Dept Energy, Ames, IA 50011 USA

[3] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[4] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 17-18期

关键词：

Intermetallics; Magnetostructural coupling; Supercooling; Phase coexistence; PHASE COEXISTENCE;

D O I：

10.1016/j.ssc.2010.01.045

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using the X-ray powder diffraction technique at various temperatures and applied magnetic fields, we have studied the magnetostructural properties of Ce(Fe0.9Si0.05)(2). The X-ray diffraction data establish quantitative relationships between bulk magnetization and the evolution of structurally distinct phases with magnetic field and temperature, and confirm the distinct features of a first-order phase transition such as supercooling and superheating. metastability, and phase co-existence of different structural polymorphs We observe the lattice volume mismatch across the structural phase transition, which appears to be the cause for the step behavior of the magnetization isotherms at low temperatures. The present study shows that the lattice distortion has to be treated explicitly, like spin, along with the effects of lattice-spin coupling to account for the magnetization behavior of this system. This structure template can resolve the issue of kinetics in this material as observed in different time scale measurements and with different experimental protocols (C) 2010 Elsevier Ltd All rights reserved.

引用

页码：879 / 883

页数：5

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