1989/02/01 by I. G. Siny, T. A. Smirnova · 1 citation
Materials Science · #Condensed matter physics #Dielectric #Diffraction #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Glass properties and applications #Materials science #Optics #Optoelectronics #Phase (matter) #Phase transition #Physics #Quantum mechanics #Raman spectroscopy #Solid-state spectroscopy and crystallography #Space (punctuation) #Space group #X-ray crystallography
paper · doi:10.1080/00150198908211291
crossref issued 1989/02/01 · crossref published 1989/02/01 · crossref published-print 1989/02/01 · openalex publication_date 1989/02/01 · crossref created 2007/06/25 · crossref deposited 2011/09/22 · openalex created_date 2025/10/10 · crossref indexed 2026/08/05 · openalex updated_date 2026/08/05
We report experimental studies of the onset of hard-mode Raman activity in some AB′ x B″1−x O3-type compounds related closely to the perovskites. The first order Ramanscattering seems to appear due to a phase transition at high temperatures into Fm3m space group from the Pm3m paraphase. We believe that the existence of several phases preceding a ferroelectric one determines a specific behavior of AB′B″O3-type compounds which is well-known as a “diffuse phase transition”.