Microstructure and magnetic properties of Ni{sub 50}Mn{sub 37}Sn{sub 13} Heusler alloy ribbons
- Departamento de Fisica, Facultad de Ciencias, Universidad de Oviedo, Calvo Sotelo s/n, 33007 Oviedo (Spain)
The Heusler alloy Ni{sub 50}Mn{sub 37}Sn{sub 13} was successfully produced as ribbon flakes of thickness around 7-10 {mu}m melt spinning. Fracture cross section micrographs in the ribbon show the formation of a microcrystalline columnarlike microstructure, with their longer axes perpendicular to the ribbon plane. Phase transition temperatures of the martensite-austenite transformation were found to be M{sub S}=218 K, M{sub f}=207 K, A{sub S}=224 K, and A{sub f}=232 K; the thermal hysteresis of the transformation is 15 K. Ferromagnetic L2{sub 1} bcc austenite phase shows a Curie point of 313 K, with cell parameter a=0.5971(5) nm at 298 K, transforming into a modulated 7M orthorhombic martensite with a=0.6121(7) nm, b=0.6058(8) nm, and c=0.5660(2) nm, at 150 K.
- OSTI ID:
- 21137294
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 103; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AUSTENITE
BCC LATTICES
CHEMICAL ANALYSIS
CURIE POINT
FERROMAGNETIC MATERIALS
FRACTURES
HEUSLER ALLOYS
HYSTERESIS
MAGNETIC PROPERTIES
MAGNETIZATION
MARTENSITE
MICROSTRUCTURE
NICKEL ALLOYS
ORTHORHOMBIC LATTICES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THICKNESS
TIN ALLOYS