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Neutron diffraction study of the magnetic refrigerant Mn1.1Fe0.9P0.76Ge0.24

Published online by Cambridge University Press:  06 March 2012

L. J. Liu ,
D. M. Liu ,
Q. Z. Huang ,
T. L. Zhang ,
L. Zhang ,
M. Yue ,
J. W. Lynn  and
J. X. Zhang
L. J. Liu
Affiliation:
Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
D. M. Liu*
Affiliation:
Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
Q. Z. Huang
Affiliation:
NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
T. L. Zhang
Affiliation:
Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
L. Zhang
Affiliation:
Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
M. Yue
Affiliation:
College of Material Science and Engineering, Beijing University of Technology, Beijing 100124, China
J. W. Lynn
Affiliation:
NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
J. X. Zhang
Affiliation:
College of Material Science and Engineering, Beijing University of Technology, Beijing 100124, China
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

Polycrystalline Mn1.1Fe0.9P0.76Ge0.24 was prepared by mechanical alloying and spark plasma sintering. Neutron diffraction was used to determine the structure of the title compound, and its nuclear and magnetic structures were refined using the Rietveld method. It is found that temperature and magnetic field can induce phase transition between the paramagnetic and the ferromagnetic phases in the material, and the paramagnetic and ferromagnetic phases have very distinct crystal structures and different Ge contents.

Keywords

neutron diffractioncrystal structuremagnetic refrigerant
Type
Technical Articles
Information
Powder Diffraction , Volume 25 , Supplement S1 , September 2010 , pp. S25 - S27
Copyright
Copyright © Cambridge University Press 2010

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