Ferroelectric and Magnetic Properties in (1-x)BiFeO3 -x(0.5CaTiO3-0.5SmFeO3) Ceramics
作者： Juan Liu , Xiao Qiang Liu , Xiang Ming Chen
DOI: 10.1111/JACE.14952
关键词:
摘要: Multiferroic ceramics were prepared and characterized in (1-x)BiFeO3-x(0.5CaTiO3-0.5SmFeO3) system by a standard solid state reaction process. The structure evolution was investigated X-ray diffraction Raman spectrum analyses. refinement results confirmed the different phase assemblages with varying amounts of polar rhombohedral R3c non-polar orthorhombic Pbnm as function substitution content. In compositions range 0.2≤x≤0.5, coexisted, which referred to polar-to-non-polar morphotropic boundary (MPB). According dielectric DSC analysis results, x≤0.2 changed diffused ferroelectric, ferroelectric properties enhanced significantly. Two relaxations detected temperature 200~300K 500~700K, respectively. high relaxation attributed grain effects. While low obtained samples x=0.3~0.5 related charge transfer between Fe2+ Fe3+. magnetic hysteresis loops measured at indicated present ceramics, could be suppressed cycloidal spin Ti ions. addition, rare-earth Sm moments might also affect relatively lower temperature. This article is protected copyright. All rights reserved.
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