ELASTIC PROPERTIES AND THERMAL-EXPANSION OF NANO3 SINGLE-CRYSTAL

被引:8
|
作者
TAKEUCHI, Y [1 ]
SASAKI, Y [1 ]
机构
[1] UNIV ELECTROCOMMUN,DEPT APPL PHYS & CHEM,CHOFU,TOKYO 182,JAPAN
关键词
ELASTIC CONSTANT; THERMAL EXPANSION; PHASE TRANSITION; SODIUM NITRATE;
D O I
10.1143/JPSJ.61.587
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
All components of elastic stiffness and compliance in NaNO3 crystal have been determined from room temperature to 300-degrees-C. They show anomalies associated with the phase transition in the vicinity of T(c). Thermal expansion coefficients parallel and perpendicular to the three-fold axis exhibit lambda-type temperature dependence near T(c). The phase transition of NaNO3 is discussed on the basis of a phenomenological theory with an order parameter related to an irreducible representation at k8 point of D3d5.
引用
收藏
页码:587 / 595
页数:9
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