Effect of Ce doping on structural, magnetic, and transport properties of SrMnO3 perovskite -: art. no. 224418

被引:43
作者
Mandal, P [1 ]
Hassen, A
Loidl, A
机构
[1] Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany
[2] Saha Inst Nucl Phys, Kolkata 7000064, W Bengal, India
[3] Cairo Univ, Fac Sci, Dept Phys, Cairo, Egypt
关键词
D O I
10.1103/PhysRevB.69.224418
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have systematically investigated the structural, magnetic, and transport properties of the Sr1-xCexMnO3 (0less than or equal toxless than or equal to0.35) system as a function of temperature and magnetic field. For xgreater than or equal to0.10, the system does not show any long-range magnetic ordering but spin-glass-like behavior at low temperatures below T-SG. The in-phase susceptibility chi below T-SG decreases and T-SG shifts toward higher temperature with the frequency of an ac magnetic field. In the paramagnetic state, chi exhibits an unusual T dependence due to the formation of a microscopic inhomogeneous magnetic phase. For the x=0.25 sample, both rho and chi show an anomaly at around 110 K due to a charge-ordering transition. Both the x=0.25 and 0.35 samples show large negative magnetoresistance over a wide range of T.
引用
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页码:224418 / 1
页数:6
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