Magnetic susceptibility of martensitic Ni-Mn-Ga film

Volodymyr A. Chernenko, Michael Hagler, Peter Müllner, Volodymyr M. Kniazkyi, Victor A. L'Vov, Makoto Ohtsuka, Stefano Besseghini

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14 Citations (Scopus)

Abstract

The present work deals with the magnetic anisotropy of a textured Ni51.4 Mn28.3 Ga20.3 thin film sputter deposited on alumina ceramic substrate. This film is a ferromagnetic martensite with a strong uniaxial magnetocrystalline anisotropy. The magnetization versus magnetic field dependencies at different angles between the direction of magnetic field and the film plane are measured with a vibrating sample magnetometer. The initial magnetic susceptibility decreases with increasing inclination with respect to the film plane. A consistent procedure is introduced for the quantitative determination of (i) the angle of the easy-magnetic axis with respect to the film normal and (ii) the ratio between the magnetic anisotropy energy and the magnetostatic energy (quality factor). These values proved to be equal to 67°±4° and 2.9±0.3, respectively.

Original languageEnglish
Article number053909
JournalJournal of Applied Physics
Volume101
Issue number5
DOIs
Publication statusPublished - 2007 Mar 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Chernenko, V. A., Hagler, M., Müllner, P., Kniazkyi, V. M., L'Vov, V. A., Ohtsuka, M., & Besseghini, S. (2007). Magnetic susceptibility of martensitic Ni-Mn-Ga film. Journal of Applied Physics, 101(5), [053909]. https://doi.org/10.1063/1.2464188