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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：中国科学院金属研究所
学位：博士
所在单位：材料科学与工程学院
学科：材料物理与化学. 材料学
办公地点：新三束实验室201
联系方式：0411-84706130
电子邮箱：dongxl@dlut.edu.cn
High-dielectric losses in stabilized gamma-iron/graphite nanocomposites
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论文类型：期刊论文
发表时间：2012-03-01
发表刊物：APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
收录刊物：SCIE、EI、Scopus
卷号：106
期号：3
页面范围：589-595
ISSN号：0947-8396
摘要：gamma-iron and gamma-iron/graphite nanoparticles were synthesized by a non-equilibrium cooling arc-discharge method. Experimental extinction spectra exhibit unexpected dielectric resonance of gamma-iron nanoparticles at the microwave frequency, presenting the first metallic nanostructure of the high-dielectric loss. We further construct a multi-dielectric loss structure, with the enhanced dielectric loss factor of 0.7-0.9, by encapsulating the gamma-iron into onion-like graphite nanoshells.