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Temperature and magnetic field induced structural transformation in Si-doped CeFe(2): An in-field X-ray diffraction study

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Title Temperature and magnetic field induced structural transformation in Si-doped CeFe(2): An in-field X-ray diffraction study
 
Creator HALDAR, A
SINGH, NK
MUDRYK, Y
SURESH, KG
NIGAM, AK
PECHARSKY, VK
 
Subject phase coexistence
intermetallics
magnetostructural coupling
supercooling
phase coexistence
 
Description Using the X-ray powder diffraction technique at various temperatures and applied magnetic fields, we have studied the magnetostructural properties of Ce(Fe(0.9)Si(0.05))(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 .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-26T23:30:09Z
2011-12-26T12:57:37Z
2011-12-27T05:44:17Z
2011-08-26T23:30:09Z
2011-12-26T12:57:37Z
2011-12-27T05:44:17Z
2010
 
Type Article
 
Identifier SOLID STATE COMMUNICATIONS, 150(17-18), 879-883
0038-1098
http://dx.doi.org/10.1016/j.ssc.2010.01.045
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11464
http://hdl.handle.net/10054/11464
 
Language en