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Structural variants in the low-temperature beta phase of stoichiometric cuprous selenide


Gladić, Jadranko; Milat, Ognjen; Vučić, Zlatko; Horvatić, Vlasta
Structural variants in the low-temperature beta phase of stoichiometric cuprous selenide // Journal of Solid State Chemistry, 91 (1991), 2; 213-224 doi:10.1016/0022-4596(91)90076-T (međunarodna recenzija, članak, znanstveni)


Naslov
Structural variants in the low-temperature beta phase of stoichiometric cuprous selenide

Autori
Gladić, Jadranko ; Milat, Ognjen ; Vučić, Zlatko ; Horvatić, Vlasta

Izvornik
Journal of Solid State Chemistry (0022-4596) 91 (1991), 2; 213-224

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

Ključne riječi
Copper selenide; structural variants

Sažetak
Symmetry lowering from Td2(f43m) to C3s (Cm) at alfa -> beta first-order phase transition of the superionic conductor Cu2Se is described by two nonequivalent wave vectors: kR=[2pi/ac](111/222) and km=[2pi/ac]((11/33) 0 Four orientation variants of the rhombohedrally deformed cage sublattice are equally probable equilibrium structures which correspond to four rays in the star of kR. Such twinning was observed using a microfurnace built for the Weissenberg goniometer. Three monoclinic beta-phase structure variants displaying together pseudorhombohedral symmetry can couple to each body cube diagonal as a cage distortion direction, giving a total of 12— the number of rays in the star of km.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
1-03-057

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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