Open AccessОсобенности динамики решетки ферровольфрамат стронция в диапазоне температур 300-700 K
Author(s) -
А.С. Анохин,
А.Г. Разумная,
А.В. Павленко
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.12.50296.157
Subject(s) - tetragonal crystal system , strontium , raman spectroscopy , atmospheric temperature range , materials science , strontium titanate , phase transition , lattice (music) , phonon , spectral line , phase (matter) , condensed matter physics , analytical chemistry (journal) , crystal structure , chemistry , crystallography , physics , optics , nanotechnology , thermodynamics , thin film , organic chemistry , chromatography , astronomy , acoustics
The lattice dynamics of strontium ferrotungsten ceramics have been studied by Raman spectroscopy in the temperature range 300−700 K. The spectra analysis confirmed tetragonal symmetry of strontium ferrotungsten which is consistent with the XRD results. The features of the temperature behaviour of the phonon modes of strontium ferrotungsten are revealed, and it is shown that a diffuse phase transition from the tetragonal to the cubic phase occurs at temperatures of 410–500 K.