Study of the effect of synthetic procedure on microstructure, defects and magnetism of multiferroic CuFeO 2 ceramics
作者： Lei Zhang , Xiaojun Tan , Dingkang Xiong , Zhenping Chen , Shoulei Xu
DOI: 10.1007/S00339-018-1729-8
关键词:
摘要: In this work, the multiferroic material CuFeO2 (CFO) ceramic is fabricated by solid-state reaction with different synthetic procedure. The effects of procedure on microstructure, evolution defects and magnetic properties CFO are studied in detail. phase structure morphology that depend indicated X-ray diffraction scanning electron microscopy results, respectively. photoelectron spectroscopy measurements show impure Cu2+ ions present all samples. Positron annihilation technique applied for detection density positron traps. results reveal vacancy samples average size geometry volume increases significantly increasing sintering temperature, while concentration distribution traps remains same. typical lifetime τ2 from 0.399 to 0.559 ns I2 decrease 25.1 8.2% sintered at 950 1100 °C, Magnetic display stability antiferromagnetic inhibited temperature but not affected time. research shows mostly related lattice structure, element valence state within under
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