%0 Journal Article
%T The Tb Doping Effect on the Room Temperature Magnetoresistance in (La1-xTbx)0.67Sr0.33MnO3 (x≤ 0.4)
%A Hongwei QIN
%A Jifan HU
%A Juan CHEN
%A Hongdong NIU
%A Luming ZHU
%A Zhuo WANG
%A <br>
%J 材料科学技术学报
%D 2004
%I 
%X With substitution of La by Tb in (La1-xTbx)0.67Sr0.33MnO3, the room temperature magnetoresistance AR/R0 drops at first, then undergoes an increase near x≈0.1, and finally drops again. The value of room temperature magnetoresistance at a field H=12 kOe for (La0.9Tb0.1)0.67Sr0.33MnO3 is -3.56%. The enhancement of the room temperature magnetoresistance induced by an appropriate Tb substitution in (La1-xTbx)0.67Sr0.33MnO3 is correlated with the shifts of the Curie temperature and metal-insulator temperature to near room temperature. The drop of the room temperature magnetoresistance at large Tb doping-contents may be due to its lower TC and TMI far from the room temperature.
%K Magnetoresistance
%K (La1-xTbx)0
%K 67Sr0
%K 33MnO3
%K Curie temperature
%K Metal-insulator temperature<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=BE3BF7E61692892ABCC1D829426BEF70&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=38B194292C032A66&sid=406BF8ED3BCE1927&eid=EA64BD0B2FF6E786&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=1&reference_num=20