Correlation between Extrinsic Electroresistance and Magnetoresistance in Fine-Grained La(0.7)Ca(0.3)MnO(3)
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Correlation between Extrinsic Electroresistance and Magnetoresistance in Fine-Grained La(0.7)Ca(0.3)MnO(3)
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| Creator |
Sujatha Devi, P
Kumar, Abhoy Bhattacharya, Dipten Karmakar, Shilpi Chaudhuri, Bijoy Krishna |
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| Subject |
Refractories
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| Description |
We report our observation of a correlation between the extrinsic electroresistance (EER) and magnetoresistance (EMR) via grain size in fine-grained La(0.7)Ca(0.3)MnO(3) The nature of dependence of EER and EMR on grain size (similar to 0 2-1 0 mu m) indicates that for finer grains with low-resistive boundaries both of them follow similar trend whereas they differ for coarser grains with high-resistive boundaries This could be due to a crossover in the mechanism of charge transport across the grain boundaries-from spin-dependent scattering process to spin-polarized tunneling one-as a function of grain size (C) 2010 The Japan Society of Applied Physics
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| Publisher |
The Japan Society of Applied Physics
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| Date |
2010-08
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| Type |
Article
PeerReviewed |
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| Identifier |
Sujatha Devi, P and Kumar, Abhoy and Bhattacharya, Dipten and Karmakar, Shilpi and Chaudhuri, Bijoy Krishna (2010) Correlation between Extrinsic Electroresistance and Magnetoresistance in Fine-Grained La(0.7)Ca(0.3)MnO(3). Japanese Journal Of Applied Physics, 49 (8, P 1). Article No.- 083001 . ISSN 0021-4922
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| Relation |
http://cgcri.csircentral.net/722/
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