Features of crystal structure and texture of isotropic and anisotropic polycrystalline hexagonal ferrites BaFe12O19, obtained by the method of radiation-thermal sintering
Year: 2017
Type: article
Abstract: In this work the crystal structure and texture of isotropic and anisotropic polycrystalline hexagonal ferrites BaFe 12 O 19 obtained by the method of radiation-thermal sintering was studied using X -ray diffraction and X -ray phase analysis. Crude blanks of both isotropic and anisotropic hexaferrites were obtained by the standard method of ceramic technology from one raw material (Fe 2 O 3 and BaCO 3 of the “analytical grade” brand) and on the same equipment with the only difference that the pressing of anisotropic blanks was carried out in magnetic field H = 10 kOe. For sintering raw billets a linear electron accelerator ILU-6 (electron energy E e = 2.5 MeV) INP them. G.I. Budker SB RAS was used. Samples were sintered in air for one hour at 1200 °C, 1250 °C, 1300 °C, and 1350 °C. It is shown for the first time that using the RTS technology, using raw blanks from ferritized charge, could be obtained high-quality single-phase isotropic and anisotropic hexaferrites BaFe 12 O 19 . The data on the features of the crystal structure and texture of the obtained objects of research are given. It was first shown that for polycrystalline hexagonal barium ferrites of type M, the dependence of the «pref.orient.o1» predominant orientation of the crystal texture parameter on the degree of magnetic texture f is described by the expression “pref.orient.o1” = –0.005 f + 0.6886.
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W3135900513