Structural polymorphism in multiferroic BiMnO3 at high pressures and temperaturesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 5 февраля 2014 г.
Аннотация:Structural phase transitions in BiMnO3were studied by means of energy-dispersive X-ray diffraction in
the pressure 0–4 GPa and temperature 300–900 K ranges, and also by means of angle-dispersive X-ray
diffraction and Raman spectroscopy at high pressures up to 50 GPa and ambient temperature. The P–T
phase diagram of BiMnO3was constructed. A suppression of the transition temperatures between monoclinicC2/cand orthorhombicPnmaphases was observed under pressure. The temperature and pressure
dependencies of lattice parameters were obtained. A new orthorhombicImma phase was observed at
P> 20 GPa. The lattice dynamics calculations were performed for the analysis of the Raman spectra of
BiMnO3.