Magnetically induced martensite transition in freestanding epitaxial Ni–Mn–Ga films

Heczko, Oleg; Thomas, Michael F.; Niemann, Robert; Schultz, L.; Fähler, S.

doi:10.1063/1.3117240

Cited by 27 publications

(28 citation statements)

References 25 publications

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“…3 shows the in-plane magnetization in a field of 10 mT as a function of temperature for two samples that were prepared simultaneously in a homogeneous sputtering plasma. The drop in the magnetization indicating a change in the in-plane anisotropy at the phase transition occurs at different temperatures for the sample on MgO(100) and Al 2 O 3 (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) coinciding the values obtained by XRD. Since compositional effects can be excluded this discrepancy in T M is clearly attributed to the different crystallographic orientation.…”

Section: H K 156supporting

confidence: 73%

Structural and Magnetic Properties of Epitaxial Ni<sub>2</sub>MnGa Thin Films

Eichhorn¹,

Jakob²

2009

MSF

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We report on the preparation and investigation of epitaxial thin films of the magnetic shape memory alloy Ni2MnGa. For samples close to the stoichiometric composition we find that the phase transformation temperature is affected by the crystallographic orientation. Changes in the crystal structure due to the transformation are observed using temperature-dependent X-ray diffraction. Films with higher manganese content are in the martensitic state at room temperature. Those samples on Al2O3(11-20) reveal the 7-layered orthorhombic structure that allows strains up to 10 %. To avoid blocking of magnetostrictive effects by the substrate, free-standing films are prepared using water-soluble NaCl(100) single crystals as substrate.

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Section: H K 156supporting

confidence: 73%

Structural and Magnetic Properties of Epitaxial Ni<sub>2</sub>MnGa Thin Films

Eichhorn¹,

Jakob²

2009

MSF

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“…47 Figure 5 shows the temperature dependence of the magnetization M in (a) a low external magnetic field of 0.1 T, which we consider low enough to allow probing Curie temperature and (b) a high magnetic field of 5 T, which is sufficient to reach saturation magnetization. Consequences of the martensitic transformation on magnetization are most prominent in saturation, which is thus discussed first.…”

Section: Magnetic Phase Transitions: Magnetometrymentioning

confidence: 99%

Epitaxial Ni-Mn-Ga-Co thin films on PMN-PT substrates for multicaloric applications

Schleicher

Niemann

Diestel

et al. 2015

Journal of Applied Physics

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“…Nevertheless, Ni-Mn-Ga alloys are very brittle, which remarkably impedes their practical applications. To overcome the problem, several forms based on the alloy have been proposed and investigated, including thin films [5][6][7][8][9], ribbons [10][11][12] and composites consisting of ductile polymer matrix and Ni-Mn-Ga alloy particles [13][14][15][16][17][18][19][20]. Among these forms, the composites prepared by mixing Ni-Mn-Ga alloy particles and polymer matrix exhibit great advantages with good formability and low cost of production, compared with the thin films and ribbons which are often restricted by their dimension in applications.…”

Section: Introductionmentioning

confidence: 99%