Naslov
Structural disordering studies in Cu_6+deltaPS_5I single crystals

Autori
Studenyak, Igor Petrovych ; Kranjčec, Mladen ; Kovács, Gyula Shandor ; Panko, Vasyl Vasylyovych ; Mitrovcij, Viktor Vasylyovych, Mikajlo, Oksana Andriyivna.

Izvornik
Materials Science and Engineering B (0921-5107) 97 (2003); 34-38

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Optical materials; Defects; Optical properties; Phase transitions

Sažetak
Temperature studies (77-325 K) of the optical Urbach absorption edge and isoabsorption studies of Cu_6PS_5I single crystals, synthesized at various technological procedures, are reported. The differences in technological conditions are shown to result in the changes of the Urbach optical absorption edge parameters, exciton-phonon interaction parameters and the characteristic temperatures of superionic and ferroelastic phase transitions. The observed changes of the Urbach edge parameters are related to the effect of statical structural disordering due to the deviation of copper content from stoichiometry.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA