Study of Structural and Electrical Transport Properties of Polycrystalline La1-XCaXMnO3 (x=0.33, 0.5 and 0.9) Prepared by a Co-Precipitation Method

Mya Theingi; Ji Ma; Hui Zhang; Xiang Gao; Jian Hong Yi; Qing Ming Chen

doi:10.4028/www.scientific.net/AMR.652-654.576

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Study of Structural and Electrical Transport...

Study of Structural and Electrical Transport Properties of Polycrystalline La_1-XCa_XMnO₃ (x=0.33, 0.5 and 0.9) Prepared by a Co-Precipitation Method

Abstract:

Manganite perovskite La_1-xCa_xMnO₃ (x=0.33, 0.5 and 0.9) have been prepared by chemical co-precipitation method. Ammonium carbonate was used to coprecipitate lanthanum, calcium and manganese ions as carbonates under basic condition. This precursor on calcining at 900°C yields La-Ca-Mn-O perovskite phase. Follow by sintering at 1200°C after the powders were pressed into pellets gave La_1-xCa_xMnO₃ (LCMO) polycrystalline ceramics. The crystal phases of the resulting powders and ceramics were examined by X-ray diffraction (XRD) technique. The morphology of the powders was observed by scanning electron microscopy (SEM) and electrical transport properties of ceramics were measured by conventional four-point probe technique.

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Advanced Materials Research (Volumes 652-654)

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576-580

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https://doi.org/10.4028/www.scientific.net/AMR.652-654.576

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Online since:

January 2013

Authors:

Mya Theingi, Ji Ma, Hui Zhang, Xiang Gao, Jian Hong Yi, Qing Ming Chen

Keywords:

Co-Precipitation Method, La_1-xCa_xMnO₃, Polycrystalline Ceramics

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