Evidence of phase separation in Nd1-xSrxMnO3(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)

doi:10.1088/1009-1963/12/11/320

中国物理B ›› 2003, Vol. 12 ›› Issue (11): 1301-1304.doi: 10.1088/1009-1963/12/11/320

Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)

鲁毅, 李庆安, 邸乃力, 李润伟, 马骁, 寇志起, 成昭华

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

收稿日期:2002-12-24 修回日期:2003-08-18 出版日期:2003-11-16 发布日期:2005-03-16

Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)

Lu Yi (鲁毅), Li Qing-An (李庆安), Di Nai-Li (邸乃力), Li Run-Wei (李润伟), Ma Xiao (马骁), Kou Zhi-Qi (寇志起), Cheng Zhao-Hua (成昭华)

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

Received:2002-12-24 Revised:2003-08-18 Online:2003-11-16 Published:2005-03-16

摘要/Abstract

摘要： The temperature dependence of Mn ion magnetization and the conductivity difference versus temperature provide phase separation evidence in Nd_{1-x}Sr_xMnO_3(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55). This is different from other reports and may suggest that a fully charge-ordered state exists in quite a narrow range; the sample preparation procedure affects the charge ordering. The polaron effect also plays an important role in explaining the conductivity.

Abstract: The temperature dependence of Mn ion magnetization and the conductivity difference versus temperature provide phase separation evidence in Nd$_{1-x}$Sr$_x$MnO$_3$($x$=0.50, 0.51, 0.52, 0.53, 0.54, 0.55). This is different from other reports and may suggest that a fully charge-ordered state exists in quite a narrow range; the sample preparation procedure affects the charge ordering. The polaron effect also plays an important role in explaining the conductivity.

Key words: phase separation, Nd$_{1-x}$Sr$_x$MnO$_3$, magnetization, conductivity

中图分类号: (Nonmetallic ferromagnetic materials)

75.50.Dd

75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 71.38.-k (Polarons and electron-phonon interactions) 75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.47.Lx (Magnetic oxides)

鲁毅, 李庆安, 邸乃力, 李润伟, 马骁, 寇志起, 成昭华. Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)[J]. 中国物理B, 2003, 12(11): 1301-1304.

Lu Yi (鲁毅), Li Qing-An (李庆安), Di Nai-Li (邸乃力), Li Run-Wei (李润伟), Ma Xiao (马骁), Kou Zhi-Qi (寇志起), Cheng Zhao-Hua (成昭华). Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)[J]. Chinese Physics, 2003, 12(11): 1301-1304.

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Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)

Evidence of phase separation in Nd_1-xSr_xMnO₃(x=0.50, 0.51, 0.52, 0.53, 0.54, 0.55)

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