FIZIKA A 11 (2002) 1 , 43-50

ISOABSORPTION AND ELECTRICAL STUDIES OF Cu₆PS₅X (X=Br, I) CRYSTALS AT THE FERROELASTIC PHASE TRANSITION

I. P. STUDENYAK

Institute of Solid State Physics and Chemistry, Uzhhorod University, 46 Pidhirna St., Uzhhorod 88000, Ukraine

Received 15 March 2001; revised manuscript received 29 August 2001
Accepted 10 September 2001 Online 25 May 2002

Temperature dependence of positions of the absorption edge E_g^a (a = 550 cm^-1) of Cu₆PS₅X (X=Br, I) crystals in the temperature range 77 to 323 K are studied by isoabsorption measurements. Temperature variation of the total electric conductivity in the range of the second-order ferroelastic phase transition are analyzed.

ISOABSORPTION AND ELECTRICAL STUDIES OF Cu₆PS₅X (X=Br, I) CRYSTALS AT THE FERROELASTIC PHASE TRANSITION

Received 15 March 2001; revised manuscript received 29 August 2001
Accepted 10 September 2001 Online 25 May 2002

PACS numbers: 77.80.Bh, 78.40.Pg
UDC 621.315.61

Keywords: ferroelastic phase transition, electric conductivity, optical absorption edge

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr

ISOABSORPTION AND ELECTRICAL STUDIES OF Cu6PS5X (X=Br, I) CRYSTALS AT THE FERROELASTIC PHASE TRANSITION

Received 15 March 2001; revised manuscript received 29 August 2001 Accepted 10 September 2001 Online 25 May 2002

PACS numbers: 77.80.Bh, 78.40.Pg UDC 621.315.61

Keywords: ferroelastic phase transition, electric conductivity, optical absorption edge

Copyright by The Croatian Physical Society For problems or questions please contact fizika@fizika.hfd.hr

ISOABSORPTION AND ELECTRICAL STUDIES OF Cu₆PS₅X (X=Br, I) CRYSTALS AT THE FERROELASTIC PHASE TRANSITION

Received 15 March 2001; revised manuscript received 29 August 2001
Accepted 10 September 2001 Online 25 May 2002

PACS numbers: 77.80.Bh, 78.40.Pg
UDC 621.315.61

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr