Temperature and magnetic-field dependence of the elastic constants of Ni-Mn-Al magnetic Heusler alloys

被引:20
作者
Moya, Xavier
Manosa, Lluis
Planes, Antoni
Krenke, Thorsten
Acet, Mehmet
Morin, Michel
Zarestky, J. L.
Lograsso, T. A.
机构
[1] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Catalonia, Spain
[2] Univ Duisburg Gesamthsch, Fachbereich Phys, D-47048 Duisburg, Germany
[3] Inst Natl Sci Appl, Etud Met Phys & Phys Mat Grp, F-69621 Villeurbanne, France
关键词
D O I
10.1103/PhysRevB.74.024109
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report on measurements of the adiabatic second-order elastic constants of the off-stoichiometric Ni54Mn23Al23 single-crystalline Heusler alloy. The variation in the temperature dependence of the elastic constants has been investigated across the magnetic transition and over a broad temperature range. Anomalies in the temperature behavior of the elastic constants have been found in the vicinity of the magnetic phase transition. Measurements under applied magnetic field, both isothermal and variable temperature, show that the value of the elastic constants depends on magnetic order, thus giving evidence for magnetoelastic coupling in this alloy system.
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页数:6
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