| Original Articles |
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Reentrant Spin Glass Behaviour and CE-Type Antiferromagnetic Phase in Half Doping (La,Pr)1,2Ca1/2 MnO3 Manganites |
| CAO Gui-Xin;ZHANG Jin-Cang;SHA Yan-Na;YAO Kai;CAO Shi-Xun;JING Chao;SHEN Xue-Chu |
| Department of Physics, Shanghai University, Shanghai 200436 |
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| Cite this article: |
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CAO Gui-Xin, ZHANG Jin-Cang, SHA Yan-Na et al 2005 Chin. Phys. Lett. 22 682-685 |
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Abstract The reentrant spin glass behaviour was observed in half doping (La,Pr)1,2Ca1/2 MnO3 manganites with a CE-type antiferromagnetic structure. It shows sequential multiple magnetic transitions from the paramagnetic to the ferromagnetic, antiferromagnetic, spin glass (SG) transitions, which reflects the complex magnetic interaction in the ground state of manganites. This can be explained by the competition interaction between the ferromagnetic and the CE-type antiferromagnetic matrix, and the disorder due to the tolerance factor t and A-cation size variance σ2. The results reveals the coexistence of ferromagnetic clusters and SG clusters in the background of the antiferromagnetic matrix in the ground state of half doping (La,Pr)1,2Ca1/2 MnO3 systems.
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| Keywords:
75.47.-m
75.47.Gk
75.47.Lx
75.10.Nr
71.30.+h
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Published: 01 March 2005
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| PACS: |
75.47.-m
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(Magnetotransport phenomena; materials for magnetotransport)
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75.47.Gk
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(Colossal magnetoresistance)
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75.47.Lx
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(Magnetic oxides)
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75.10.Nr
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(Spin-glass and other random models)
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71.30.+h
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(Metal-insulator transitions and other electronic transitions)
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