2007/12/05 by Alexej Pashkin, A. Pashkin, Pashkin, A. +12
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Multiferroics and related materials #Other Condensed Matter (cond-mat.other) #Railway Engineering and Dynamics #cond-mat.other
paper · pdf · doi:10.48550/arxiv.0712.0736
arxiv created 2007/12/05 · openalex publication_date 2007/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the results of pressure-dependent far-infrared reflectivity measurements on the multiferroic perovskite BiFeO3 at room temperature. The observed behavior of the infrared-active phonon modes as a funtion of pressure clearly reveals two structural phase transitions around 3.0 and 7.5 GPa, supporting the results of recent Raman and x-ray diffraction studies under pressure. Based on the pressure-dependent frequency shifts of the infrared-active phonon modes we discuss the possible character of the phase transitions.