Magnetic properties of Nd0.5Pb0.5-xSrxMnO3materials

Lu Yi; Li Qing-An; Di Nai-Li; Ma Xiao; Kou Zhi-Qi; Luo Zhi; Cheng Zhao-Hua

doi:10.1088/1009-1963/12/7/316

Chinese Physics

Magnetic properties of Nd_0.5Pb_0.5-xSr_xMnO₃ materials

Lu Yi¹, Li Qing-An¹, Di Nai-Li¹, Ma Xiao¹, Kou Zhi-Qi¹, Luo Zhi¹ and Cheng Zhao-Hua¹

Published under licence by IOP Publishing Ltd
Chinese Physics, Volume 12, Number 7 Citation Lu Yi et al 2003 Chinese Phys. 12 789 DOI 10.1088/1009-1963/12/7/316

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¹ State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Dates

Received 26 December 2002

Abstract

The structure and magnetic properties of Nd_0.5Pb_0.5-xSr_xMnO₃ (0⩽x⩽0.4) manganites were systematically investigated. Significant changes in Curie temperature and metal-insulator (MI) transition temperature of the samples were observed. All samples exhibited a transition from paramagnetic semiconducting to ferromagnetic metallic state. Curie temperatureT_C and the MI transition temperature T_p increased with increasing Sr content. We attributed these behaviours to the enhancing of both the double exchange mechanism and the Jahn-Teller electron-phonon coupling.

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