Magnetic Shape Memory Phenomena

被引:99
作者
Heczko, Oleg [1 ]
Scheerbaum, Nils [1 ]
Gutfleisch, Oliver [1 ]
机构
[1] Acad Sci, Inst Phys, Slovance 2, CZ-18221 Prague, Czech Republic
来源
NANOSCALE MAGNETIC MATERIALS AND APPLICATIONS | 2009年
关键词
NI-MN-GA; FIELD-INDUCED STRAIN; TEMPERATURE-DEPENDENCE; CRYSTAL-STRUCTURE; SINGLE-CRYSTAL; MARTENSITIC-TRANSFORMATION; PHASE-TRANSITIONS; MAGNETOCRYSTALLINE ANISOTROPY; MAGNETOMECHANICAL PROPERTIES; INDUCED DEFORMATION;
D O I
10.1007/978-0-387-85600-1_14
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Giant magnetically induced strain up to 50 times larger compared to the strain of giant magnetostriction was observed in some Heusler alloys, particularly in Ni-Mn-Ga. In analogy with the shape memory phenomenon this effect was called magnetic: shape memory effect. The effect includes two different phenomena: a magnetically induced structural phase transformation (usually a martensitic transformation) and a magnetically induced structural reorientation occurring in the martensitic phase. Transformation behavior, structure of the martensite, and phenomenology of the magnetically induced reorientation are described. The description is based mainly on the well-studied compound Ni-Mn-Ga.
引用
收藏
页码:399 / +
页数:10
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