Yu, M H and Sujatha Devi, P and Lewis, L H and Sampath, S and Parise, J B and Gambino, R J (2003) Novel synthesis and magnetocaloric assessment of functional oxide perovskites. Materials science and Engineering B-Advanced Functional Solid-StateMaterials, 97 (3). pp. 245-250. ISSN 0921-5107

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The magnetic entropy change associated with the ferromagnetic Curie transition has been studied in La0.85Sr0.15MnO3 (LSM) perovskites obtained by both the citrate-nitrate gel autoignition and combustion thermal spray techniques. A modest magnetic entropy change can be observed in La0.85Sr0.15MnO3 by sintering the precursor-derived powder at 1200 8C for 16 h or by combustion spraying the solution precursor onto an Al substrate and annealing at 800 8C for 6 h. The combustion thermal spray process with rapid deposition rates and relatively low deposition temperature directly produces a microcrystalline perovskite phase. This microcrystalline powder can be processed more rapidly and at lower temperatures than that derived from the sol-gel syntheses process to produce material with fine crystallinity and an obvious magnetocaloric effect.

Item Type: Article
Uncontrolled Keywords: Magnetocaloric effect; Perovskite oxide; Gel autoignition; Combustion thermal spray
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 19 Mar 2012 11:59
Last Modified: 19 Mar 2012 11:59
URI: http://cgcri.csircentral.net/id/eprint/1249

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