Meeting abstract

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

Abstract

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.

Keywords

Hrčak ID:

340927

URI

https://hrcak.srce.hr/340927

Publication date:

15.12.1980.

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