caa a22 4500 445379995 CHVBK 20180317143014.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10948-011-1133-5 doi (NATIONALLICENCE)springer-10.1007/s10948-011-1133-5 Microstructure and Transport Properties in Tin Boned La0.7Sr0.3MnO3 Composites [Elektronische Daten] [Liqin Yang, Xinsheng Yang, Li Lv, Cuihua Cheng, Yong Zhao] A novel boned perovskite manganese oxide magnetoresistant material was prepared using La0.7Sr0.3MnO3 (LSMO) as the precursor powders and metal tin (Sn) as the binder. The microstructure and phase characteristics, low-field transport properties were studied. Sn segregated at the grain boundaries of LSMO grains. The insulator-metal (I-M) transition and enhanced LFMR are only observed with a low content of Sn, due to grain boundary disorder and spin polarized tunneling between grain boundaries. The Sn addition induced resistivity decreasing dramatically. In the high temperature PM region, the resistivities for samples with low Sn content follow the adiabatic small-polaron-hopping model. Springer Science+Business Media, LLC, 2011 Perovskite manganite oxide nationallicence Low-field magnetoresistance nationallicence Bonded method nationallicence Yang Liqin Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut Yang Xinsheng Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut Lv Li Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut Cheng Cuihua Superconductivity Research Group, School of Materials Science and Engineering, University of New South Wale, 2052 NSW, Sydney, Australia aut Zhao Yong Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 1847-1851 1557-1939 24:6<1847 2011 24 10948 https://doi.org/10.1007/s10948-011-1133-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-011-1133-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Liqin Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut NATIONALLICENCE 700 1- Yang Xinsheng Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut NATIONALLICENCE 700 1- Lv Li Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut NATIONALLICENCE 700 1- Cheng Cuihua Superconductivity Research Group, School of Materials Science and Engineering, University of New South Wale, 2052 NSW, Sydney, Australia aut NATIONALLICENCE 700 1- Zhao Yong Key Laboratory of Advanced Technology of Materials (Ministry of Education), Superconductor and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, 610031, Chengdu, China aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/6(2011-08-01), 1847-1851 1557-1939 24:6<1847 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer