Optical studies of the ferroelastic phase transitions in KFe(MoO4)2

被引：4

作者：

Zapart, W. ^{[1
]}

Zapart, M. B. ^{[1
]}

机构：

[1] Czestochowa Tech Univ, Inst Phys, Czestochowa, Poland

来源：

PHASE TRANSITIONS | 2016年 / 89卷 / 7-8期

关键词：

Phase transitions; ferroelastics; trigonal double molybdates; polarized light microscopy; morphic birefringence; ANTIFERROMAGNETIC KFE(MOO4)(2); CRYSTALS; TUNGSTATES; MOLYBDATES;

D O I：

10.1080/01411594.2016.1186274

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The ferroelastic phase transitions in KFe(MoO4)(2) have been studied by means of polarized light microscopy. The crystal undergoes a sequence of ferroelastic phase transitions. It has been found that the second transition consists of two transitions separated by the temperature interval of about 0.4K. Both these transitions are of the first order and are evidenced through a phase front passing, without the domain structure rebuilding. The disposition of optical indicatrix axes n(g), n(m) has been established, and the birefringence has been measured in the plane (0001) in the temperature range covering all ferroelastic phases. From temperature studies of the morphic birefringence, a critical exponent of the order parameter has been estimated.

引用

页码：761 / 767

页数：7

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