Papers by Keyword: Raman Scattering Spectra

Abstract: Multiferroic ceramic samples of Bi_1-xGd_xFeO₃ (x = 0, 0.05, 0.1 and 0.15) have been prepared by the rapid liquid phase sintering technique. The effect of Gd substitution on ferroelectric properties of Bi_1-xGd_xFeO₃ ceramics has been investigated. The results of x-ray diffraction (XRD) patterns show that the single-phase BiFeO₃ sample has a rhombohedral structure and Gd³⁺ substitution for Bi³⁺ has not affected the perovskite structure. Experimental results suggest that Gd³⁺ substitution for Bi³⁺ has markedly affected the Raman scattering spectra, and the ferroelectric properties of BiFeO₃ are improved by Gd³⁺ doping. When x = 0.15, saturated ferroelectric hysteresis loop is observed at room temperature with the maximal 2Pr = 1.62 μC/cm².