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arXiv · 1103.1736

Magnetostructural Transformation and Magnetoresponsive Properties of MnNiGe1-xSnx Alloys

Enke Liu·Yin Du·Jinglan Chen·Wenhong Wang·Hongwei Zhang·Guangheng Wu
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Abstract

The martensitic and magnetic phase transformations in MnNiGe1-xSnx (0 \leq x \leq 0.200) alloys were investigated using X-ray diffraction (XRD), differential thermal analysis (DTA) and magnetization measurements. Results indicate that the increasing Sn substitution in MnNiGe1-xSnx results in (i) decrease of martensitic transformation temperature from 460 to 100 K and (ii) conversion of AFM spiral to antiparallel AFM strcuture in martensite. Based on these, the remarkable magnetic-field-induced PM/spiral-AFM and FM/AFM magnetostructural transformations and, large positive and negative magnetocaloric effects are obtained. The magnetoresponsive effects of MnNiGe1-xSnx alloys are enhanced by Sn substitution. A structural and magnetic phase diagram of MnNiGe1-xSnx alloys has been proposed.

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Enke Liu, Yin Du, Jinglan Chen, Wenhong Wang, Hongwei Zhang, Guangheng Wu. 2011-03-09. Magnetostructural Transformation and Magnetoresponsive Properties of MnNiGe1-xSnx Alloys. https://doi.org/10.1109/tmag.2011.2159964

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