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基于BST-MgO介质Mie谐振的各向同性负磁导率复合材料
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：O413.1[理学—理论物理;理学—物理] TH824.4[机械工程—仪器科学与技术;机械工程—精密仪器及机械]
  • 作者机构：[1]清华大学精密仪器与机械学系,摩擦学国家重点实验室,北京100084, [2]清华大学材料系,新型陶瓷与精细工艺国家重点实验室,北京100084
  • 相关基金：国家自然科学基金（批准号：50425204,50632030,60608016,10774087）和摩擦学国家重点实验室项目（编号：SKLT08B12）资助
作者： 赵乾[1], 康雷[2], 杜波[2], 赵宏杰[2], 谢芹[2], 李勃[2], 周济[2], 李龙土[2], 孟永钢[1]
关键词： 左手材料, 铁电陶瓷, 负磁导率, 磁谐振, Mie谐振
中文摘要：

由Mie谐振原理和有效媒质理论出发，设计并制备了一种具有各向同性负磁导率的介电复合材料．该介电复合材料由高介电常数的BST-MgO铁电陶瓷立方块颗粒均匀分散在低介电常数的聚四氟乙烯介质中而形成．微波测量和理论计算表明，该复合材料在第1级Mie谐振附近表现出强的磁谐振，并且具有负的磁导率．该磁谐振起源于电磁波在介电颗粒内诱导产生的环形位移电流，使得该介电颗粒等效于一个磁偶极子，并且其谐振频率可由颗粒的大小和介电常数调节．基于Mie谐振的介电复合材料为红外和可见光频段各向同性左手材料和隐身斗篷的实现提供了一种简单易行的方法．

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,美国数学评论（网络版）,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:81792