Premartensitic states in the ferromagnetic Ni-Mn-Ga alloys

被引：0
|
作者：
Kokorin, V.V. [1 ]
机构：
[1] Institute of Magnetism, UA-252680 Kiev, Ukraine
来源：
| 2000年 / Trans Tech Publ, Uetikon-Zuerich卷 / 327期
关键词：
Austenite - Elastic moduli - Ferromagnetism - Magnetostriction - Martensitic transformations - Shape memory effect - Single crystals - Thermoelasticity;
D O I：
10.4028/www.scientific.net/msf.327-328.493
中图分类号：
学科分类号：
摘要：
The high temperature phase (L21 Cu2MnAl-type structure) of Ni-Mn-Ga (22-32at.%Mn, 20-25at.%Ga) alloys undergoes a thermoelastic martensitic transformation upon either cooling or elastic deformation. The structural changes as well as the anomalies displayed by some physical properties in the temperature interval which precedes the martensitic transformation have been observed. The longitudinal magnetostriction (Ε) was measured in an austenite and martensite, Ε shows a strong growth when the temperature approaches Ms.
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