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

doi:10.1063/1.2464188

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

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to journal › Article › peer-review

16 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 language	English
Article number	053909
Journal	Journal of Applied Physics
Volume	101
Issue number	5
DOIs	https://doi.org/10.1063/1.2464188
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.2464188

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@article{07891ef1098c4c4fa0892e8c44506e5d,

title = "Magnetic susceptibility of martensitic Ni-Mn-Ga film",

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.",

author = "Chernenko, {Volodymyr A.} and Michael Hagler and Peter M{\"u}llner and Kniazkyi, {Volodymyr M.} and L'Vov, {Victor A.} and Makoto Ohtsuka and Stefano Besseghini",

note = "Funding Information: One of the authors (V.A.C.) is grateful to Fondazione Cariplo for financial support (Project No. 2004.1819-A10.9251) and to Boise State University, Idaho for partial financial support and hospitality. The authors are grateful to M. Beiser for laser cutting the specimens. Partial support through DARPA Contract No. N660001-01-8034 and National Science Foundation (NSF) Project No. 0502551 is acknowledged. ",

year = "2007",

doi = "10.1063/1.2464188",

language = "English",

volume = "101",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "5",

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TY - JOUR

T1 - Magnetic susceptibility of martensitic Ni-Mn-Ga film

AU - Chernenko, Volodymyr A.

AU - Hagler, Michael

AU - Müllner, Peter

AU - Kniazkyi, Volodymyr M.

AU - L'Vov, Victor A.

AU - Ohtsuka, Makoto

AU - Besseghini, Stefano

N1 - Funding Information: One of the authors (V.A.C.) is grateful to Fondazione Cariplo for financial support (Project No. 2004.1819-A10.9251) and to Boise State University, Idaho for partial financial support and hospitality. The authors are grateful to M. Beiser for laser cutting the specimens. Partial support through DARPA Contract No. N660001-01-8034 and National Science Foundation (NSF) Project No. 0502551 is acknowledged.

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

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JF - Journal of Applied Physics

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Magnetic susceptibility of martensitic Ni-Mn-Ga film

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