New room-temperature ferromagnet: B-added Pd0.75Mn0.25 alloy

Jiro Kitagawa; Kohei Sakaguchi

doi:10.1016/j.jmmm.2018.07.087

New room-temperature ferromagnet: B-added Pd0.75Mn0.25 alloy

Materials Science 2018-09-26 v1

Authors: Jiro Kitagawa , Kohei Sakaguchi

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Abstract

Mn-based room-temperature ferromagnets attract considerable attention due to their high ordered Mn moment. We have found that a Pd0.75Mn0.25 alloy with added B (Pd0.75Mn0.25Bx) shows room-temperature soft ferromagnetism, whereas the parent Pd0.75Mn0.25 alloy is a spin-glass system. The saturated Mn moment at room temperature systematically increases to 2.68\muB/Mn as x increases to 0.125. The maximum Curie temperature of 390 K is also realized at an x of 0.125. The experimental results suggest a tunable soft ferromagnetism, which is governed only by the boron concentration. Our results will pave the way in chemical control of room-temperature bulk ferromagnetism in Mn compounds based on the addition of an atom with a small atomic radius.

Keywords

room-temperature ferromagnet pdmn alloy boron doping soft ferromagnetism curie temperature spin glass mn moment

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@article{arxiv.1807.11640,
  title  = {New room-temperature ferromagnet: B-added Pd0.75Mn0.25 alloy},
  author = {Jiro Kitagawa and Kohei Sakaguchi},
  journal= {arXiv preprint arXiv:1807.11640},
  year   = {2018}
}

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accepted for the publication in Journal of Magnetism and Magnetic Materials

New room-temperature ferromagnet: B-added Pd0.75Mn0.25 alloy

Abstract

Keywords

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