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Magnetic Properties, Magnetocaloric Effect, and Critical Behavior of Gd – Co – Ge Amorphous Ribbons

  • AMORPHOUS ALLOYS
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Metal Science and Heat Treatment Aims and scope

The effect of structural disordering on the magnetic properties and magnetocaloric effect of amorphous (Gd4Co3)1–xGex (x = 0, 0.05, 0.10, 0.15) alloys is studied. The structure of the ribbons after melt-spinning is determined using an x-ray diffractometer. The thermal analysis is performed with the help of a differential scanning calorimeter. The temperature of the start of crystallization is determined. The magnetic properties are measured in a PPMS-9 system. The Curie temperature and the temperature dependence of the magnetization are determined. Different models are used for describing the critical exponents of the magnetic phase transitions.

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The work has been supported by the Guangdong Provincial Science and Technology Program (Grant No. 2014B070706023 and 2015A050502015), the Guangzhou Municipal Science and Technology Program (No. 20150504170237, 201605131319468) and the Natural Science Foundation of the Guangdong Province (No. 2016A030313494).

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Authors and Affiliations

  1. School of Materials Science and Engineering, South China University of Technology, Guangzhou, China

    Z. G. Zheng, H. Y. Yu & D. C. Zeng

  2. Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Canada

    Z. G. Zheng, Y. H. Li, A. He & Y. Mozharivskyj

  3. School of Environmental and Chemical Engineering of Dalian University, Dalian, China

    Y. H. Li

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  1. Z. G. Zheng
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  2. Y. H. Li
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  3. A. He
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Correspondence to Z. G. Zheng.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 14 – 22, January, 2019.

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Zheng, Z.G., Li, Y.H., He, A. et al. Magnetic Properties, Magnetocaloric Effect, and Critical Behavior of Gd – Co – Ge Amorphous Ribbons. Met Sci Heat Treat 61, 15–22 (2019). https://doi.org/10.1007/s11041-019-00370-w

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