A. S. Anokhin, A. G. Razumnaya, V. I. Torgashev, V. G. Trotsenko, Yu. I. Yuzyuk, A. A. Bush, V. Ya. Shkuratov, B. P. Gorshunov, E. S. Zhukova, L. S. Kadyrov, G. A. Komandin, “Dynamic spectral response of solid solutions of the bismuth-strontium ferrite Bi$_{1-x}$Sr$_x$FeO$_{3-\delta}$ in the frequency range 0.3–200 THz”, Fizika Tverdogo Tela, 2013, Volume 55, Issue 7,Pages 1320

This article is cited in 8 papers

Ferroelectricity

Dynamic spectral response of solid solutions of the bismuth-strontium ferrite Bi$_{1-x}$Sr$_x$FeO$_{3-\delta}$ in the frequency range 0.3–200 THz

A. S. Anokhin^ab, A. G. Razumnaya^a, V. I. Torgashev^a, V. G. Trotsenko^a, Yu. I. Yuzyuk^a, A. A. Bush^c, V. Ya. Shkuratov^c, B. P. Gorshunov^de, E. S. Zhukova^de, L. S. Kadyrov^de, G. A. Komandin^d

^a Southern Federal University, Rostov-on-Don
^b Southern Research Center of the Russian Academy of Sciences, Rostov-on-Don
^c MIREA — Russian Technological University, Moscow
^d Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^e Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region

Abstract: Ceramic samples of Bi$_{1-x}$Sr$_x$FeO$_{3-\delta}$ have been investigated using X-ray diffraction analysis, Raman spectroscopy, and infrared spectroscopy. It has been shown that the spectra of these solid solutions should be considered as a superposition of resonant phonon responses of the cubic perovskite and a relaxation response. No relaxators are observed in the pure compounds BiFeO$_3$ and SrFeO$_{3-\delta}$. It has been found that two concentration phase transitions occurs with the symmetry changes in the range 0.1 $<x<$ 0.2 and in the range 0.8 $<x<$ 1.0.

Received: 25.12.2012