Boron Site Preference in B-Doped Barium Hexaferrite

Abstract

Mössbauer studies were conducted on boron-doped barium ferrites BaFe12-xBxO19 (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.6) with special attention paid to the behavior of the line widths in the Mössbauer sextets. Assuming that the broadening of the line widths in the various sextets is due to increases in the fluctuations in the hyperfine field (acting on an Fe ion in a given site) caused by the introduction of the B ions into the neighboring Fe sites, the observed broadening of the lines belonging to the different sextets indicated that the B ions are entering into the 4fiv sites, as proposed by Ram (J Magn Magn Mat 82, 129 (1989)) based on the saturation magnetization measurements.