Site Occupancy Determination and Magnetic Evaluation of MnZn-Ferrites Using Mn Kβ X-Ray Fluorescence Spectra

Abstract

Cation distributions in manganese zinc ferrites, which take spinel-type structure, were examined by Mn Kβ X-ray fluorescence (XRF) spectra observed using a wavelength-dispersive spectrometer. Each of MnFe₂O₄ and Mn_0.5Zn_0.5Fe₂O₄ was prepared by two different kinds of low-temperature synthesis methods, and the intensities of Kβ'satellite line and Kβ₅ line of the products were compared. It was obvious that Mn_0.5Zn_0.5Fe₂O₄ prepared by precipitation from aqueous solution has more trivalent Mn cations in B-site than that prepared by mechanochemical synthesis, and it may have larger magnetic moment. The result of magnetization measurement is consistent with the observation.