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Title: Phase transitions in intermetallic compounds Ni-Mn-Ga with shape memory effect

Abstract

The effect of a magnetic field on the formation of structural domains at martenisitic transition in the intermetallic system NI{sub 2+X}Mn{sub 1{minus}X}Ga was studied. For the compositions X whose the temperatures of structural and magnetic transitions are close this effect is most pronounced. In the field of 0.2 to 1 T the increase in the transition temperature is linear with the coefficient of 0.015 K/T. Estimates of the transition temperature shift based on thermodynamic calculations are in good agreement with the experimental data. It is shown that the switching on the magnetic field at some critical temperature induces partial transformation of austenite into martensite.

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Inst. of Radioengineering and Electronics of RAS, Moscow (RU)
OSTI Identifier:
20000817
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NICKEL ALLOYS; MANGANESE ALLOYS; GALLIUM ALLOYS; MAGNETIC FIELDS; PHASE TRANSFORMATIONS; TRANSITION TEMPERATURE; SHAPE MEMORY EFFECT; MAGNETIC PROPERTIES; PHASE DIAGRAMS

Citation Formats

Dikshtein, I., Koledov, V., and Shavrov, V. Phase transitions in intermetallic compounds Ni-Mn-Ga with shape memory effect. United States: N. p., 1999. Web. doi:10.1109/20.800673.
Dikshtein, I., Koledov, V., & Shavrov, V. Phase transitions in intermetallic compounds Ni-Mn-Ga with shape memory effect. United States. doi:10.1109/20.800673.
Dikshtein, I., Koledov, V., and Shavrov, V. Wed . "Phase transitions in intermetallic compounds Ni-Mn-Ga with shape memory effect". United States. doi:10.1109/20.800673.
@article{osti_20000817,
title = {Phase transitions in intermetallic compounds Ni-Mn-Ga with shape memory effect},
author = {Dikshtein, I. and Koledov, V. and Shavrov, V.},
abstractNote = {The effect of a magnetic field on the formation of structural domains at martenisitic transition in the intermetallic system NI{sub 2+X}Mn{sub 1{minus}X}Ga was studied. For the compositions X whose the temperatures of structural and magnetic transitions are close this effect is most pronounced. In the field of 0.2 to 1 T the increase in the transition temperature is linear with the coefficient of 0.015 K/T. Estimates of the transition temperature shift based on thermodynamic calculations are in good agreement with the experimental data. It is shown that the switching on the magnetic field at some critical temperature induces partial transformation of austenite into martensite.},
doi = {10.1109/20.800673},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt2,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}