Optical studies of the ferroelastic phase transitions in Rb3H(SeO4)2, (NH4)3H(SO4)2 and (NH4)3H(SeO4)2
Optical studies of the ferroelastic phase transitions in Rb3H(SeO4)2, (NH4)3H(SO4)2 and (NH4)3H(SeO4)2
复制标题
Rb3H(SeO4)2、(NH4)3H(SO4)2 和 (NH4)3H(SeO4)2 中铁弹性相变的光学研究
DOI：
10.1080/01411599108205199
复制
发表时间：
1991
期刊：
影响因子：
--
通讯作者：
H. Warhanek
中科院分区：
文献类型：
--
作者：
W. Schranz;P. Dolinar;A. Fuith;H. Warhanek
用光学显微镜观察了Rb_3 H（SeO_4）_2和（NH_4）_3 H（SO_4）_2晶体的孪晶和铁弹畴，并测量了光率体的旋转。考虑到对称性从菱面体（Rm）到单斜相（B2/a）的减少，可以很好地描述畴和生长孪晶的发生。倾斜铁弹壁的取向由室温下的自发应变ε 11和ε 23决定。
Abstract Optical observations of growth twins and ferroelastic domains and measurements of the rotation of the optical indicatrix were carried out for Rb3H(SeO4)2 and (NH4)3H(SO4)2 using an optical microscope. Taking into account the symmetry reduction from the rhombohedral (Rm) to the monoclinic phase (B2/a) the occurrence of domains and growth twins can be well described. The orientations of oblique ferroelastic walls are well determined by the spontaneous strains s e 11 and s e 23 at room temperature.