Structural and magnetic characterization of martensitic Ni-Mn-Ga thin films deposited on Mo foil

V. A. Chernenko; R. Lopez Anton; M. Kohl; J. M. Barandiaran; M. Ohtsuka; I. Orue; S. Besseghini

doi:10.1016/j.actamat.2006.06.058

Structural and magnetic characterization of martensitic Ni-Mn-Ga thin films deposited on Mo foil

V. A. Chernenko, R. Lopez Anton, M. Kohl, J. M. Barandiaran, M. Ohtsuka, I. Orue, S. Besseghini

IMRAM - Center for Mineral Processing and Metallurgy (CMPM)

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

34 Citations (Scopus)

Abstract

Three martensitic Ni_51.4Mn_28.3Ga_20.3 thin films sputter-deposited on a Mo foil were investigated with regard to their crystal and magnetic domain structures, as well as their magnetic and magnetostrain properties. The film thicknesses, d, were 0.1, 0.4 and 1.0μm. X-ray and electron diffraction patterns revealed a tetragonal modulated martensitic phase (10 M) in the films. The surface topography and micromagnetic structure were studied by scanning probe microscopy. A maze magnetic domain structure featuring a large out-of-plane magnetization component was found in all films. The domain width, δ, depends on the film thickness as δ ∼ sqrt(d). The thickness dependencies of the saturation magnetization, saturation magnetic field and magnetic anisotropy were clarified. Beam cantilever tests on the Ni-Mn-Ga/Mo composite as a function of magnetic field showed reversible strains, which are larger than ordinary magnetostriction.

Original language	English
Pages (from-to)	5461-5467
Number of pages	7
Journal	Acta Materialia
Volume	54
Issue number	20
DOIs	https://doi.org/10.1016/j.actamat.2006.06.058
Publication status	Published - 2006 Dec

Keywords

Ferromagnetic shape memory alloys
Magnetic domains
Magnetostrain
Thin films

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10.1016/j.actamat.2006.06.058

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@article{e13acaf3539649ed85056655102898fa,

title = "Structural and magnetic characterization of martensitic Ni-Mn-Ga thin films deposited on Mo foil",

abstract = "Three martensitic Ni51.4Mn28.3Ga20.3 thin films sputter-deposited on a Mo foil were investigated with regard to their crystal and magnetic domain structures, as well as their magnetic and magnetostrain properties. The film thicknesses, d, were 0.1, 0.4 and 1.0μm. X-ray and electron diffraction patterns revealed a tetragonal modulated martensitic phase (10 M) in the films. The surface topography and micromagnetic structure were studied by scanning probe microscopy. A maze magnetic domain structure featuring a large out-of-plane magnetization component was found in all films. The domain width, δ, depends on the film thickness as δ ∼ sqrt(d). The thickness dependencies of the saturation magnetization, saturation magnetic field and magnetic anisotropy were clarified. Beam cantilever tests on the Ni-Mn-Ga/Mo composite as a function of magnetic field showed reversible strains, which are larger than ordinary magnetostriction.",

keywords = "Ferromagnetic shape memory alloys, Magnetic domains, Magnetostrain, Thin films",

author = "Chernenko, {V. A.} and {Lopez Anton}, R. and M. Kohl and Barandiaran, {J. M.} and M. Ohtsuka and I. Orue and S. Besseghini",

note = "Funding Information: V.A.C. is grateful to Fondazione Cariplo for financial support (Project 2004.1819-A10.9251). The authors are grateful to K. Seemann and A. Agarval for valuable help in magnetostriction measurements and M. Beiser for laser cutting the specimens. ",

year = "2006",

month = dec,

doi = "10.1016/j.actamat.2006.06.058",

language = "English",

volume = "54",

pages = "5461--5467",

journal = "Acta Materialia",

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TY - JOUR

T1 - Structural and magnetic characterization of martensitic Ni-Mn-Ga thin films deposited on Mo foil

AU - Chernenko, V. A.

AU - Lopez Anton, R.

AU - Kohl, M.

AU - Barandiaran, J. M.

AU - Ohtsuka, M.

AU - Orue, I.

AU - Besseghini, S.

N1 - Funding Information: V.A.C. is grateful to Fondazione Cariplo for financial support (Project 2004.1819-A10.9251). The authors are grateful to K. Seemann and A. Agarval for valuable help in magnetostriction measurements and M. Beiser for laser cutting the specimens.

PY - 2006/12

Y1 - 2006/12

N2 - Three martensitic Ni51.4Mn28.3Ga20.3 thin films sputter-deposited on a Mo foil were investigated with regard to their crystal and magnetic domain structures, as well as their magnetic and magnetostrain properties. The film thicknesses, d, were 0.1, 0.4 and 1.0μm. X-ray and electron diffraction patterns revealed a tetragonal modulated martensitic phase (10 M) in the films. The surface topography and micromagnetic structure were studied by scanning probe microscopy. A maze magnetic domain structure featuring a large out-of-plane magnetization component was found in all films. The domain width, δ, depends on the film thickness as δ ∼ sqrt(d). The thickness dependencies of the saturation magnetization, saturation magnetic field and magnetic anisotropy were clarified. Beam cantilever tests on the Ni-Mn-Ga/Mo composite as a function of magnetic field showed reversible strains, which are larger than ordinary magnetostriction.

AB - Three martensitic Ni51.4Mn28.3Ga20.3 thin films sputter-deposited on a Mo foil were investigated with regard to their crystal and magnetic domain structures, as well as their magnetic and magnetostrain properties. The film thicknesses, d, were 0.1, 0.4 and 1.0μm. X-ray and electron diffraction patterns revealed a tetragonal modulated martensitic phase (10 M) in the films. The surface topography and micromagnetic structure were studied by scanning probe microscopy. A maze magnetic domain structure featuring a large out-of-plane magnetization component was found in all films. The domain width, δ, depends on the film thickness as δ ∼ sqrt(d). The thickness dependencies of the saturation magnetization, saturation magnetic field and magnetic anisotropy were clarified. Beam cantilever tests on the Ni-Mn-Ga/Mo composite as a function of magnetic field showed reversible strains, which are larger than ordinary magnetostriction.

KW - Ferromagnetic shape memory alloys

KW - Magnetic domains

KW - Magnetostrain

KW - Thin films

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Structural and magnetic characterization of martensitic Ni-Mn-Ga thin films deposited on Mo foil

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