Ukrainian Journal of Physical Optics 


Number  4, Volume 3,  2002

Home page
 
 

Other articles 
in this issue


Optical Observation of Ferroelastic Domains in Cu6PS5X (X=I,Br,Cl) Crystals
Kaynts D.I., Studenyak I.P., Nebola I.I., Horvat A.A.

Institution for Solid State Physics and Chemistry, Uzhgorod National University, 46 Pidhirna St., Uzhgorod, 88000, Ukraine

download full version

The ferroelectric-ferroelastic domain structure in Cu6PS5Br2 and  Cu6PS5I0.8Cl0.2 crystals is investigated using a polarizing microscope. Four types of domain walls are found. These domain walls separate at least six orientation states. The domain walls are classified as W and W` walls. The Cu6PS5I0.8Cl0.2 ferroelastic phase transition temperature point is detected on the base of birefringence temperature dependence.

Key words: ferroelastic and superionic crystals, domain structure.

PACS: 77.80Dj ; 42.25Lc

doi 10.3116/16091833/3/4/267/2002

References
1. Kuhs WF, Nitsche R and Scheunemann K, 1979. Mater. Res. Bull. 14: 241.
        doi:10.1016/0025-5408(79)90125-9  http://dx.doi.org/10.1016/0025-5408(79)90125-9
2. Studenyak IP, Kovacs GySh, Orliukas AS and Kovacs YeT, 1992. News of Acad.Sc. Phys.is. 56 86.
3. Haznar A, Pietraszko A and Studenyak IP, 1999. Solid State Ionics 119: 31.
        doi:10.1016/S0167-2738(98)00479-2  http://dx.doi.org/10.1016/S0167-2738(98)00479-2
4. Fiechter S and Gmelin E, 1985. Thermochim. Acta. 85: 155.
        doi:10.1016/0040-6031(85)85553-2  http://dx.doi.org/10.1016/0040-6031(85)85553-2
5. Studenyak IP, Vaytkus RA, Dyordyay VS, Kezhenis AP, Mikuchenis VF, Panko VV, Kovacs Gy Sh, Stefanovich VO, Orliukas AS, Borets AN, Slivka VYu, 1986. Phys.Stat.Sol. 28: 2555.
6. Samulionis V, Valevi?ius V, Studenyak IP, Kova? DS, 1993. Ultragarsas 25: 129.
7. Studenyak IP, Stefanovich VO, Kranj?ec M, Desnica DI, Azhnyuk YuM, Kovacs GySh, PankoVV, 1997. Solid State Ionics 95: 221.
        doi:10.1016/S0167-2738(96)00477-8  http://dx.doi.org/10.1016/S0167-2738(96)00477-8
8. Sapriel J, 1975. Phys.Rev.B. 12: 5128.
        doi:10.1103/PhysRevB.12.5128  http://dx.doi.org/10.1103/PhysRevB.12.5128
9. Studenyak IP, Kranj?ec M, Suslikov LM, Kovacs GySh, Hagymashi ZP, 2002. Ukr.J.Phys. 47: 447.

Home | Instructions to Authors | Editorial Board | Meetings & Exhibitions