%0 Journal Article
%T Fe3O4 Segregation and Transport Properties of La0.67Ca0.33MnO3
%A ZHOU Qian-Xue
%A DAI Ming-Xing
%A WANG Ren-Hui
%A FENG Xin-Nan
%A WANG Yang
%A XIA Zheng-Cai
%A <br>周千学
%A 戴明星
%A 王仁卉
%A 冯新南
%A 王杨
%A 夏正才
%J 中国物理快报
%D 2006
%I 
%X Effect of Fe3O4 segregation at grain boundaries on the electrical transport and magnetic properties of La0.67Ca0.33MnO3 is investigated. The experimental results show that the Fe3O4 segregation not only shifts the paramagnetic-ferromagnetic transition temperature of La0.6TCa0.33MnO3 to a lower temperature region but also induces a new transition in a lower temperature region. Meanwhile, the transition processes observed in both the resistivity and magnetization curves are obviously widened. Compared to pure La0.67Ca0.33MnO3, we assume that the Fe3O4 segregation level at the grain boundaries can modify the electrical transport and magnetic properties of La0.67Ca0.33MnO3.
%K 71
%K 30
%K +h
%K 75
%K 30
%K Kz
%K 75
%K 30
%K Vn<br>Fe3O4分离
%K 晶粒边界
%K 实验结果
%K 跃迁温度
%K 顺磁性
%K 铁磁性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=3A0BED63EB2817A87CCAC33D737541C1&yid=37904DC365DD7266&vid=EA389574707BDED3&iid=5D311CA918CA9A03&sid=1836C42FA42719AB&eid=E485F20140D2A09D&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=15