Magnetic properties and structure change from tetragonal to hexagonal for the rapidly quenched SmTiFe11 alloy ribbons

H. Saito, M. Takahashi, T. Wakiyama

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    39 Citations (Scopus)

    Abstract

    Structure and magnetic properties of the rapidly quenched SmTiFe 11 alloy ribbons fabricated under various quenching rates were systematically examined. Phase transformation from an equilibrium ThMn 12-type structure (tetragonal) to a metastable TbCu 7-type disordered structure (hexagonal) was found for the ribbons fabricated around the roll velocity, VR≅30 m/s. Magnetocrystalline anisotropy changed from uniaxial (Ku1=5. 0×107 erg/cm3) to in-plane anistropy in accordance with the structure change from ThMn12- to TbCu 7-type structure. Ms and Tc varied from 125 emu/g and 320°C (ThMn12 type) to 114 emu/g and 242°C (TbCu7 type), respectively. The maximum hard magnetic properties for SmTiFe11 alloy ribbons, iH c=3 kOe, (BH)max=3 MGOe, were obtained for the ribbons with a ThMn12-type structure.

    Original languageEnglish
    Pages (from-to)5965-5967
    Number of pages3
    JournalJournal of Applied Physics
    Volume64
    Issue number10
    DOIs
    Publication statusPublished - 1988 Dec 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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