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No.2(pp.27-68)

Home > Issues > Volume 9 (2004) > No.2(pp.27-68)

Magnetically Soft Nanomaterials Obtained by Devitrification of Metallic Glasses

Journal of Magnetics, Volume 9, Number 2, 30 Jun 2004, Pages 65-68

Tadeusz Kulik*

(Faculty of Materials Science and Engineering, Warsaw University of Technology), Jaroslaw Ferenc(Faculty of Materials Science and Engineering, Warsaw University of Technology), Maciej Kowalczyk(Faculty of Materials Science and Engineering, Warsaw University of Technology), Liang Xiubing(Faculty of Materials Science and Engineering, Warsaw University of Technology), Natalya Nedelko(Institute of Physics, Polish Academy of Science), Anna Slawska- Waniewska(Institute of Physics, Polish Academy of Science)

Abstract

Magnetically soft nanomaterials obtained by controlled crystallisation of metallic glasses are the newest group of materials for inductive components. In particular, research is carried out in the field of alloys for high temperature applications. This kind of materials must meet two basic requirements: good magnetic properties and stability of properties and structure. In the present work the magnetic properties and structure of Fe-Co-Hf-Zr-Cu-B (HIDTPERM-type) alloys were investigated, as well as their stability. Differential thermal analysis, (DTA), X-ray diffractometry (XRD), transmission electron microscopy (TEM), magnetometry (VSM) and quasistatic hysteresis loop recording were used to characterise structure and properties of the alloys investigated. Optimisation against properties and their stability was performed, resulting in formulation of chemical composition of the optimum alloy, as well as its heat treatment.

Keywords: soft magnetic materials; nanocrystalline materials; HITPERM; stability; magnetic properties

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