Ferromagnetic Spin Fluctuation in the Itinerant-Electron Magnetic Compounds <i>R</i>Co<sub>9</sub>Si<sub>4</sub> (<i>R</i> = Y, La)

نویسندگان

چکیده

Ferromagnetic spin fluctuations in itinerant-electron magnetic compounds RCo9Si4 (R = Y, La) were investigated by using magnetization and 59Co-NMR measurements. YCo9Si4 is an itinerant ferromagnet, while LaCo9Si4 a nearly ferromagnetic metal. In YCo9Si4, the field dependence of well described Takahashi’s spin-fluctuation theory for weak ferromagnets. both LaCo9Si4, susceptibility, Knight Shift 1/T1T show similar temperature dependence, which suggests that fluctuation dominant these compounds. The difference ground state possibly attributed to fact energy scale larger than YCo9Si4.

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ژورنال

عنوان ژورنال: Funtai oyobi fummatsu yakin

سال: 2022

ISSN: ['0532-8799', '1880-9014']

DOI: https://doi.org/10.2497/jjspm.69.467