Martensitic transition, inverse magnetocaloric effect and shape memory characteristics in Mn48−xCuxNi42Sn10 Heusler alloys

In this paper, we discuss the magnetocaloric behavior of Ni-Mn-based Heusler alloys in rela- tion to their shape-memory and superelastic properties. We show that the magnetocaloric effect in these materials originates from two different contributions: (i) the coupling that is related to a strong uniaxial magnetic anisotropy and takes place at the length scale of martensite variants and magnetic domains (extrinsic effect), and (ii) the intrinsic microscopic magnetostructural coupling. The first contribution is intimately related to the magnetically induced rearrange- ment of martensite variants (magnetic shape-memory) and controls the magnetocaloric effect at small applied fields, while the latter is dominant at higher fields and is essentially related to the possibility of magnetically inducing the martensitic transition (magnetic superelasticity). The possibility of inverse magnetocaloric effect associated with these two contributions is also considered.

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Determination of the magnetocaloric effect associated with martensitic transition in Ni 46 Cu 4 Mn 38 Sn 12 and Ni 50 CoMn 34 In 15 Heusler alloys

Chinese Physics B ◽

10.1088/1674-1056/20/4/047502 ◽

2011 ◽

Vol 20 (4) ◽

pp. 047502 ◽

Cited By ~ 4

Author(s):

Zhe Li ◽

Chao Jing ◽

Hao-Lei Zhang ◽

Shi-Xun Cao ◽

Jin-Cang Zhang

Keyword(s):

Magnetocaloric Effect ◽

Heusler Alloys ◽

Martensitic Transition

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Hydrostatic pressure effects on martensitic transition, magnetic and magnetocaloric effect in Si doped Ni–Mn–Sn Heusler alloys

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2013.09.007 ◽

2014 ◽

Vol 584 ◽

pp. 175-179 ◽

Cited By ~ 19

Author(s):

S. Esakki Muthu ◽

M. Kanagaraj ◽

Sanjay Singh ◽

P.U. Sastry ◽

G. Ravikumar ◽

...

Keyword(s):

Hydrostatic Pressure ◽

Magnetocaloric Effect ◽

Heusler Alloys ◽

Pressure Effects ◽

Martensitic Transition ◽

Si Doped

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ChemInform Abstract: Magnetocaloric Effect and Its Relation to Shape-Memory Properties in Ferromagnetic Heusler Alloys

ChemInform ◽

10.1002/chin.200947216 ◽

2009 ◽

Vol 40 (47) ◽

Author(s):

Antoni Planes ◽

Lluis Manosa ◽

Mehmet Acet

Keyword(s):

Shape Memory ◽

Magnetocaloric Effect ◽

Heusler Alloys ◽

Shape Memory Properties

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Magnetocaloric effect and its relation to shape-memory properties in ferromagnetic Heusler alloys

Journal of Physics Condensed Matter ◽

10.1088/0953-8984/21/23/233201 ◽

2009 ◽

Vol 21 (23) ◽

pp. 233201 ◽

Cited By ~ 592

Author(s):

Antoni Planes ◽

Lluís Mañosa ◽

Mehmet Acet

Keyword(s):

Shape Memory ◽

Magnetocaloric Effect ◽

Heusler Alloys ◽

Shape Memory Properties

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Recent Progress and Future Perspectives in Magnetic and Metamagnetic Shape-Memory Heusler Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.738-739.391 ◽

2013 ◽

Vol 738-739 ◽

pp. 391-399 ◽

Cited By ~ 8

Author(s):

Antoni Planes ◽

Lluís Mañosa ◽

Mehmet Acet

Keyword(s):

Shape Memory ◽

Heusler Alloys ◽

Martensitic Transition ◽

Future Perspectives ◽

Magnetic Shape Memory ◽

Strong Response ◽

Complex Behaviour ◽

First Case ◽

Superelastic Effect ◽

Magneto Resistance

Magnetic shape-memory properties refer to the ability of certain materials to show strong response in strain to an applied magnetic field. This strain is caused by either inducing the martensitic transition or rearranging martensitic variants. In the first, case a superelastic effect is possible, while in the second, the system is able to show the shape-memory effect. The complex behaviour displayed by these materials is mainly a consequence of a strong interplay between magnetism and structure which is driven by a martensitic transition. This interplay is the source of many other observed effects such as giant magneto-resistance, exchange bias and magnetocaloric effects. In this paper, we will overview the present state of the art, discuss present challenges and outline some future perspectives in the field.

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