Anisotropy of resistance transition temperature of La-Ca-Mn-O colossal magnetoresistance ceramics - 文章详情页

作者：

Hu, Zhen-Jiang (Hu, Zhen-Jiang.) | Wang, Yue (Wang, Yue.) | Zhang, Yi-Cai (Zhang, Yi-Cai.) | Jiang, Yi-Jian (Jiang, Yi-Jian.) (学者：蒋毅坚)

收录：

EI Scopus PKU CSCD

摘要：

In　order　to　further　enhance　resistance　transition　temperature　(Tp)　of　metal-semiconductor　of　La-Ca-Mn-O　colossal　magnetoresistance　ceramics,　La0.67Ca0.33MnO3　(LCMO)　polycrystalline　ceramics　were　formed　as　cylindrical　pellets　(φ13　mm×8　mm)　by　conventional　solid-state　reaction　method.　The　anisotropy　of　LCMO　samples　which　was　cut　from　the　sections　parallel　and　perpendicular　to　the　pressing　direction　were　studied,　respectively.　The　R-T　curves　shows　that　transition　temperatures　for　these　two　types　of　specimens　were　177　K　and　261　K,　respectively　under　null　and　0.5　T　magnetic　field.　In　addition,　the　mechanism　of　dramatic　enhancement　of　transition　temperature　was　explained　through　investigating　XRD　and　SEM　of　the　specimens.

关键词：

Anisotropy Calcium Ceramic materials Colossal magnetoresistance Electric resistance Magnetic field effects Magnetoelectronics Manganese Manganese compounds Pelletizing Strontium compounds Superconducting transition temperature

作者机构：

[ 1 ] [Hu, Zhen-Jiang]School of Mathematical and Physical Science, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wang, Yue]School of Mathematical and Physical Science, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, Yi-Cai]School of Mathematical and Physical Science, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Jiang, Yi-Jian]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

wy2001@bjut.edu.cn

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