浙江大学学报(英文版)
浙江大學學報(英文版)
절강대학학보(영문판)
JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE
2004年
5期
603-608
,共6页
崔玉建%葛洪良%韩雁冰%贾广强%王新燕%曹义刚%张金仓
崔玉建%葛洪良%韓雁冰%賈廣彊%王新燕%曹義剛%張金倉
최옥건%갈홍량%한안빙%가엄강%왕신연%조의강%장금창
La2/3Ca1/3MnO3%Fe-doping%Crystal structure%Transport properties
Systematic studies of the transport properties of La0.67Ca0.33Mn1-xFexO3 (x=0-0.3) systems showed that with increasing Fe-doping content x the resistance increases and the insulator-metal transition temperature moves to lower temperature. For small doping content, the transport property satisfies metal transport behavior below the transition temperature, and above the transition temperature it satisfies the small polaron model. This behavior can be explained by Fe3+ doping, which easily forms Fe3+-O2--Mn4+ channel, suppressing the double exchange Mn3+-O2--Mn4+ channel and enhancing the spin scattering of Mn ions induced by antiferromagnetic clusters of Fe ions.
