Sažetak sa skupa

⁸¹Br NQR study of phase transitions in Rb₂ZnBr₄

J. Pirnat ; Institute of Mathematics, Physics and Mechanics, and Physics Department of E. Kardelj University Ljubljana, P.O. Box 543, Ljubljana, Yugoslavia
E. Podreka ; Institute of Mathematics, Physics and Mechanics, and Physics Department of E. Kardelj University Ljubljana, P.O. Box 543, Ljubljana, Yugoslavia
J. Lužnik ; Institute of Mathematics, Physics and Mechanics, and Physics Department of E. Kardelj University Ljubljana, P.O. Box 543, Ljubljana, Yugoslavia
Z. Trontelj ; Institute of Mathematics, Physics and Mechanics, and Physics Department of E. Kardelj University Ljubljana, P.O. Box 543, Ljubljana, Yugoslavia

Sažetak

⁸¹Br NQR in Rb₂ZnBr₄ was measured as a function of temperature in the region from 77 K to 420 K. The spectra obtained show the existence of structural phase transitions at T ≈ 355 K, T ≈ 200 K and perhaps also at ~130 K. The lattice dynamics and the structure of Rb₂ZnBr₄ strongly depend on the impurities in the sample. Different amounts of impurities could be the reason for the differences in the results obtained from three different samples.

Ključne riječi

Hrčak ID:

340927

URI

https://hrcak.srce.hr/340927

Datum izdavanja:

15.12.1980.

Posjeta: 176 *