Concentration dependence of the magnetic properties of melt-quenched P-type Mg30GdxZn70-x quasicrystals

H. Saito, K. Fukamichi, T. Goto, A. P. Tsai, A. Inoue, T. Masumoto

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Mg30GdxZn70-x (x=7, 8, 9 and 10) quasicrystals have been prepared in order to investigate their crystal structure and magnetic properties. The quasicrystal structure has been identified as a P-type with a Frank-Kasper-type structure. The temperature dependence of DC magnetic susceptibility follows Curie-Weiss law. The Gd-Gd exchange interaction is predominantly antiferromagnetic for all quasicrystals since their paramagnetic Curie temperature is negative. The magnitude of θp increases with the increase in the Gd content and the saturation of high-field magnetization curves becomes easier with decreasing Gd content. In these alloys, the spin-glass state appears and the spin freezing temperature Tf increases with increasing Gd content. The value of Tf for the P-type Mg30Gd8Zn62 quasicrystal is comparable to that for an F-type Mg42Gd8Zn50 quasicrystal.

    Original languageEnglish
    Pages (from-to)6-11
    Number of pages6
    JournalJournal of Alloys and Compounds
    Volume252
    Issue number1-2
    DOIs
    Publication statusPublished - 1997 May 5

    Keywords

    • Frank-Kasper
    • Localized magnetic moment
    • Paramagnetic Curie temperature
    • Quasicrystal
    • RKKY interaction
    • Spin-glass

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

    Fingerprint

    Dive into the research topics of 'Concentration dependence of the magnetic properties of melt-quenched P-type Mg<sub>30</sub>Gd<sub>x</sub>Zn<sub>70-x</sub> quasicrystals'. Together they form a unique fingerprint.

    Cite this