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Nickle Concentration Effect on Low Magnetic Field Magnetocaloric Properties for Ni2+xMn1−xGe

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Abstract

Low magnetic field magnetocaloric properties of Ni2+xMn1−xGe near phase transition from a ferromagnetic to a paramagnetic state were investigated theoretically for level of doping x = 0.1 and 0.2. It is shown that the change of Ni content allows the magnetocaloric effect in Ni2+xMn1−xGe to be tunable, which is more practical for construction magnetocaloric refrigeration. Furthermore, the results show that the magnetocaloric properties of Ni2+xMn1−xGe samples are significantly larger and comparable with some magnetocaloric properties of many materials like La1−xCdxMnO3, Gd1−xCaxBaCo2O5.5, Ge0.95Mn0.05, La1.25Sr0.75MnCoO6, Ni58Fe26Ga28, and MnAs films.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt

    Adly H. El-Sayed

  2. Physics and Chemistry Department, Faculty of Education, Alexandria University, Matrouh Branch, Matrouh, Egypt

    Mahmoud A. Hamad

  3. Basic Science Department, High Institute of Engineering and Technology, King Marriott Academy, Alexandria, Egypt

    Mahmoud A. Hamad

Authors
  1. Adly H. El-Sayed
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  2. Mahmoud A. Hamad
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Correspondence to Mahmoud A. Hamad.

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El-Sayed, A.H., Hamad, M.A. Nickle Concentration Effect on Low Magnetic Field Magnetocaloric Properties for Ni2+xMn1−xGe. J Supercond Nov Magn 32, 1447–1450 (2019). https://doi.org/10.1007/s10948-018-4855-9

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  • DOI: https://doi.org/10.1007/s10948-018-4855-9

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