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Anomalous effects of repeated martensitic transitions on the transport, magnetic and thermal properties in Ni-Co-Mn-Sb Heusler alloy

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Title Anomalous effects of repeated martensitic transitions on the transport, magnetic and thermal properties in Ni-Co-Mn-Sb Heusler alloy
 
Creator NAYAK, AK
SURESH, KG
NIGAM, AK
 
Subject SHAPE-MEMORY ALLOYS
PHASE-TRANSITION
HYDROSTATIC-PRESSURE
FIELD
TRANSFORMATION
GD-5(SI2GE2)
TEMPERATURE
NI2MNGA
ORDER
FE
Thermal/field cycling
Martensitic transition
Magneto-structural transition
Heusler alloy
 
Description The detrimental effects of repeated thermal/field cycling across the martensitic transition on the transport, magnetic and thermal properties of Ni(45)Co(5)Mn(38)Sb(12) are studied. With the help of resistivity and magnetization measurements, it is shown that the resistivity increases and the magnetization decreases monotonically with continuous temperature or field cycling across the martensitic transition. It is also found that the martensite to austenite transition temperature increases with repeated structural change. The changes occurring in these physical properties are seen to be irreversible in nature. The possible changes in the lattice and the microstructure by repeated structural change seem to be responsible for the observed variations. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2012-06-26T06:07:36Z
2012-06-26T06:07:36Z
2011
 
Type Article
 
Identifier ACTA MATERIALIA,59(8)3304-3312
1359-6454
http://dx.doi.org/10.1016/j.actamat.2011.02.004
http://dspace.library.iitb.ac.in/jspui/handle/100/14006
 
Language English