THE BEHAVIOR OF THE ELASTIC-CONSTANTS AT THE TRANSFORMATION BETWEEN THE MODULATED PHASES IN NI2MNGA

被引：8
|
作者：
CHERNENKO, VA
KOKORIN, VV
VASILEV, AN
SAVCHENKO, YI
机构：
[1] Institute of Metal Physics, Kiev, 252142
来源：
PHASE TRANSITIONS | 1993年 / 43卷 / 1-4期
关键词：
MODULATED PHASE; ULTRASOUND VELOCITY; ULTRASOUND GENERATION MECHANISM;
D O I：
10.1080/01411599308207818
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The phenomenon of electromagnetic-to-acoustic conversion (EMAC) in modulated parent and low temperature phases in monocrystalline Heusler alloy Ni2MnGa has been investigated. The anomalies in the temperature dependences of EMAC efficiency, low field magnetic susceptibility and velocities of transverse and longitudinal ultrasonic waves both at the Curie point (T-c = 347 K) and the martensitic transformation (T-m = 270 K) from one modulated phase to another are observed. A sharp decrease of the shear modulus c' near T-m has been found.
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页码：187 / 191
页数：5
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