Applied Physics Letters · 1999 · 186 citations · 9 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsMetallic MaterialsMetallurgyAlloysFerromagnetismMagnetic AnisotropyMagnetic Properties Of SolidsMagnetism In SolidsMetalsField-induced StrainHeusler AlloysMagnetic PropertiesMartensite TransformationMartensite VariantsStrain Effects On Magnetic PropertiesStrain-induced Martensitic TransformationTwin Boundary Motion
A giant magnetic-field-induced strain (MFIS) of −3100 ppm has been obtained in Heusler alloy Ni52Mn22.2Ga25.8 single crystal in the [001] direction at a temperature from 23 to 31 °C. This MFIS reaches saturation in an applied field about 6 kOe, and exhibits the same amplitude with an opposite sign while the field is perpendicular to the samples. According to a previous model, this MFIS associates with the twin boundary motion. The martensitic self-strain has been found to be 2%, implying a preferential orientation of martensite variants. Results related to the magnetic properties are discussed.
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Large magnetic-field-induced strains in Ni2MnGa single crystals
K. Ullakko, Junjie Huang, C. Kantner et al. · Applied Physics Letters · 1996 · 2.6K citations
Magnetic order and phase transformation in Ni<sub>2</sub>MnGa
P. J. Webster, K.R.A. Ziebeck, S.L. Town et al. · Philosophical Magazine B · 1984 · 1.2K citations