Ukrainian Journal of Physical Optics 


Number  1, Volume  1, 2000
The domain structure of the Rb2Cd2(SO4)3 and Tl2Cd2(SO4)3 langbeinite crystals 
1.The domain structure in the ferroelastic phase of the Tl2Cd2(SO4)3 crystals

Vlokh R., Skab I., Girnyk I., *Czapla Z., *Dacko S., *Kosturek B.

Institute of Physical Optics, 23 Dragomanov Str., 79005, L'viv, Ukraine
*Institute of Experimental Physics, Wroclaw University, 9 M.Born Sq., Wroclaw, Poland
 

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The “non-permissible” domain structure in the ferroelastic phase of TCS crystals was found out. The orientation of the domain walls between three pairs of domains S2-S3’, S1-S2’ and S1-S3’ were found to be (110), (101) and (011), respectively. The regions of the paraelastic phase was not observed between the domains. The orientation of the domain walls in the ferroelastic phase of the TCS crystals confirm the conception about the existing of the parent phase with the point group of symmetry `43m in the langbeinites

Key words: ferroelastics, domains, langbeinites, Tl2Cd2(SO4)3

doi 10.3116/16091833/1/1/28/2000

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