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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/942

Title: Magnetoresistive behaviour of La0.67(Ca0.33-xpbx) MnO3 nanopowders prepared at lower temperature
Authors: Pandya, Dinesh K
Kashyap, Subhash C
Pattanaik, Gyana R
Keywords: Magnetoresistance
Chemical route
Nanopowders
Issue Date: 2001
Citation: Journal of Alloys and Compounds, 326(1-2), 255-259
Abstract: We have been able to prepare ultrafine powders of pure and doped La Ca MnO (LCMO) at a relatively lower temperature of 5508C using a simple, cost effective and versatile PVA-based chemical route. A maximum magnetoresistance (MR) ratio of -25% is obtained at 20 K in a magnetic field of 3 kOe. Magnetoresistive behaviour being retained in the nanopowders may have implications for enhancing data storage capacity. The semicondutor-to-metal transition temperature, Tg however, shifts towards the lower temperature as p the particle size is reduced. To improve T and near-room-temperature MR additives like NH NO and citric acid have been used. In addition, Pb is substituted for Ca.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/942
Appears in Collections:Physics

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