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Electronic Transport and Magnetic Properties in Y _{0.125} Ca {\rm }_{0.875} MnO _{3} Manganite

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6 Author(s)
Chen, Zhenping ; Dept. of Phys., Zhengzhou Univ. of Light Ind., Zhengzhou ; Su, Yuling ; Yuefeng Li ; Dewei Liu
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A rare-earth-like manganite Y0.125Ca0.875MnO3 was systemically studied by the structure, electric and magnetic measurement. The results show that there exists a considerable magnetoresistance effect in this system. And two transitions are found on electrical transport corresponding to conventional metal-insulator (M-I) transition and Kondo-like behavior. From the magnetization in the zero-field-cooled (ZFC) and field-cooled (FC), a large irreversibility was observed with a cusp at 108 K about considered as spin-glass freezing temperature. Below 108 K, a coexistence of ferromagnetic spin-glass and ferromagnetic ordering phase appears, which indicates a long-range ferromagnetic behavior in spin-glass state. These suggest an intrinsic ferromagnetic spin-glass state in the Y0.125Ca0.875MnO3 system at low temperatures and may be suppressed with applied higher field of about 8.0 Tesla.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 6 )