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Title: Effect of isoelectronic substitution on phase transition and magnetic properties of Ni{sub 57}Mn{sub 18}Ga{sub 25−x}In{sub x} (0 ≤ x ≤ 8) alloys with Ni excess

Effect of isoelectronic substitution of In for Ga on the phase transition and magnetic properties was studied in Ni{sub 57}Mn{sub 18}Ga{sub 25−x}In{sub x} (0 ≤ x ≤ 8) alloys. With the increasing In content, the room-temperature phase structure evolved from tetragonal martensite to cubic austenite. The martensitic transformation temperatures were significantly decreased by the substitution of In for Ga, but the austenitic Curie temperature was only slightly decreased. Especially, both thermal and isothermal magnetization measurements revealed that the Curie temperature and saturation magnetization of the martensite were independent on the isoelectronic substitution. The results were discussed by considering the phase structures and the atomic interactions.
Authors:
; ; ; ; ;  [1]
  1. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)
Publication Date:
OSTI Identifier:
22402866
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AUSTENITE; AUSTENITIC STEELS; CONCENTRATION RATIO; CURIE POINT; GALLIUM ALLOYS; INDIUM ALLOYS; MAGNETIC PROPERTIES; MAGNETIZATION; MANGANESE ALLOYS; MARTENSITE; NICKEL BASE ALLOYS; PHASE TRANSFORMATIONS; TEMPERATURE RANGE 0273-0400 K