%0 Journal Article
%T Magnetic and electrical properties of layered perovskite La1.3Sr1.7Mn1-xCuxO7<br>层状钙钛矿La1.3Sr1.7Mn2-xCuxO7的磁性及电特性
%A Han Li-An
%A Chen Chang-Le
%A Dong Hui-Ying
%A Wang Jian-Yuan
%A Gao Guo-Mian
%A Luo Bing-Cheng
%A <br>韩立安
%A 陈长乐
%A 董慧迎
%A 王建元
%A 高国棉
%A 罗炳成
%J 物理学报
%D 2008
%I 
%X Magnetic and electrical properties of polycrystalline La1.3Sr1.7Mn2-xCuxO7 prepared by solid state reaction were investigated. The X-ray diffraction pattern shows that the two samples have Sr3Ti2O7 type perovskite structure. The two samples undergo complex transition with lowering temperature. The x=0 samples, have the two-dimensional short-range ferromagnetic order at T*=231 K and then transform to the three-dimensional long-rangs ferromagnetic state at TC=114 K, at last they enter the canted antiferromagnetic state at TN=56K. The T*, TC and TN are all reduced at the 5% Cu doping level. Additionally, the two samples exhibited two distinct resistivity peaks, which is due to coexistence of the two phases. The metal-insulator transition temperature was decreased but the magnetoresistance was enhanced at the 5% Cu doping level.
%K layered perovskite
%K magnetic property
%K electrical property<br>层状钙钛矿，
%K 磁性，
%K 电特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F3F08BBFCCCBD833AD5314F4C0B9DAC9&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=CA4FD0336C81A37A&sid=1918ADDC93A85779&eid=B34BDD6A690A04C0&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=20