Preparation of Mn1.2Fe0.8P0.76Ge0.24 Room Temperature Magneto-Caloric Materials by SPS
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Abstract:
Mn1.2Fe0.8P0.76Ge0.24 room temperature magneto-caloric compounds were prepared by mechanical alloying and subsequent spark plasma sintering (SPS) technique. XRD and SEM were used to analyze the phase composition and the microstructure of the sintered bulk samples. Results show that the sintered bulk samples have homogeneous and compact microstructure, but with a little MnO and Fe3Mn4Ge6. DSC curve of the sintered bulk Mn1.2Fe0.8P0.76Ge0.24 compound shows that the Curie temperature TC of the sample is around –10 oC, and at –7 oC the magnetic entropy change is 23 J/(kg·K)
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[Zhang Tongliang, Liu Danmin, Rao Guanghui, Wang Tong, Yue Ming, Zhang Jiuxing. Preparation of Mn1.2Fe0.8P0.76Ge0.24 Room Temperature Magneto-Caloric Materials by SPS[J]. Rare Metal Materials and Engineering,2011,40(9):1680~1682.] DOI：[doi]