%0 Journal Article
%T Transport Properties in La0.7-xDyxSr0.3MnO3 System<br>La0.7-xDyxSr0.3MnO3体系的输运行为研究
%A LI Hong
%A ZHANG Ming-Yu
%A CAI Zhi-Rang
%A GUO Huan-Yin
%A PENG Zhen-Sheng
%A YAN Guo-Qing
%A <br>李鸿
%A 张明玉
%A 蔡之让
%A 郭焕银
%A 彭振生
%A 严国清
%J 无机材料学报
%D 2005
%I Science Press
%X The influence of Dy doping at La-site on transport properties of La0.7-xDyxSro.3MnO3 (x=0.00, 0.10, 0.15, 0.20, 0.30, 0.40, 0.50, 0.60, and 0.70) was studied. The experimental results indicate that with increasing Dy doping, the system undergoes a transition from long range ferromagnetic order to the cluster-spin glass state and further to antiferromagnetic order. The transport properties exhibit abnormal behaviour at high doping condition. For x=0.50, a transition from metal to insulator occurs after the occurrence of insulator-metal transition near Tc, which seldom occurs in ABO3 structure. The samples of x=0.60 and 0.70, exhibit insulator behavior far above Tc.
%K magnetic structure
%K transport properties
%K colossal magnetoresistance effect<br>磁结构
%K 输运行为
%K 庞磁电阻效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=F200FC7C6E40BC20&yid=2DD7160C83D0ACED&vid=A04140E723CB732E&iid=E158A972A605785F&sid=90C2E72D2E105FF5&eid=54D3D9B69F1CCE77&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=11