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《Chemical Research In Chinese Universities》 2003-12
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Electrical-magnetic Properties of Nanocomposites of Conducting Polyaniline and γ-Fe_2O_3 Nanoparticles

YANG Qing-Lin 1,2, ZHAI Jin 1, SONG Yan-Lin 1, WAN Mei-Xiang 1, JIANG Lei 1*, XU Wen-Guo 2, LI Qian-Shu 2 (1. Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; 2. School of Chemical Engineering and Materials Sciences, Beijing Institute of Technology, Beijing 100081, China)  
Nanocomposites of PAn-DBSA/γ-Fe 2O 3 with electrical and ferromagnetic behavior(σ= 2.18×10 -3-5.00×10 -5 S/cm, M s=3.7-16.6 m 2·A/kg, H c=8 805.2-9 133.1 A/m) were prepared by a chemical modification-redoping method in a neutral medium. The products were characterized by TEM, XRD, UV-Vis, four-probe method, and magnetometer. The results indicate that the electrical and magnetic properties of the nanocomposites strongly depend on γ-Fe 2O 3 content. With the increase of γ-Fe 2O 3 content, the electrical conductivity is decreased and saturation magnetization is increased.
【Fund】: 国家重点基础研究项目 (批准号 :G19990 64 5 0 4) ;; 国家自然科学基金 (批准号 :2 963 40 2 0 -2 2 99740 3 7);; 中国科学院创新工程基金 (批准号 :CMS-CX2 0 0 1)资助
【CateGory Index】: O631.2
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