物理学报2012，Vol.61Issue(20)：473-479,7.
钇和镧掺杂氧化铝陶瓷的热导及其介电弛豫特性研究
conductive properties and dielectric relaxation of Al2O3-based ceramics
摘要
Abstract
Al2O3 ceramics doping with Y3+ and Las+ are synthesized by conventional solid state reaction method. The structures, thermal conductivities properties and the effects of sintering temperature on the electrical properties of the samples are measured. X-ray diffraction results indicate that all the ceramics are formed to be of pure solid solution when the samples are sintered at 1500 ℃. Thermal conductivities of Al2O3 ceramics reach up to 8.60 W/(m.K). All the ceramics show temperature-stable dielectric characteristics. Typical dielectric relaxation behaviors are observed in Y- and La-doped Al2O3 ceramics, and the relaxation mechanism is also analyzed.关键词
Al2O3/陶瓷/热导率/介电弛豫Key words
Al2O3/ceramics/thermal conductivity/dielectric relaxation分类
数理科学引用本文复制引用
伍君博,唐新桂,贾振华,陈东阁,蒋艳平,刘秋香..钇和镧掺杂氧化铝陶瓷的热导及其介电弛豫特性研究[J].物理学报,2012,61(20):473-479,7.基金项目
国家自然科学基金,(批准号：10774030),广东省科技计划项目,(批准号：20108090400141)和广州市科技计划项目,(批准号：2010Y1一C221)资助的课题. （批准号：10774030）
