节点文献
Study of transport behavior for Fe-doping La0.67Ca0.33MnO3 perovskite manganese
【Abstract】 Systematic studies of the transport properties of La0.67Ca0.33Mn1- FexO3 (x=0?0.3) systems showed that with x 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 tem- perature, 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.
【关键词】 La2/3Ca1/3MnO3；
Fe-doping；
Crystal structure；
Transport properties；
【Key words】 La2/3Ca1/3MnO3； Fe-doping； Crystal structure； Transport properties；
【Key words】 La2/3Ca1/3MnO3； Fe-doping； Crystal structure； Transport properties；
【基金】 Project supported by the National Natural Science Foundation ofChina (No. 10274049) Foundation of the Natural Science of Zhe-jiang Province (Nos. RC015056 and 502122) Science & Tech-nology Development Foundation of the Education Committee of Sh-anghai Municipality (No. 02AK42)and the Shanghai LeadingAcademic Discipline Program (No. 01A16)
- 【文献出处】 Journal of Zhejiang University Science ,浙江大学学报(英文版) , 编辑部邮箱 ,2004年05期
- 【分类号】P578
- 【下载频次】13