Study of Features of the Composition, Magnetic, and Crystal Structure of Barium Hexaferrite BaFe12- xTixO19

被引：13

作者：

Korovushkin, V. V. ^{[1
]}

Trukhanov, A. V. ^{[1
,2
]}

Kostishin, V. G. ^{[1
]}

Isaev, I. M. ^{[1
]}

Shchetinin, I. V. ^{[1
]}

Durov, N. M. ^{[1
]}

Mironovich, A. Yu. ^{[1
]}

Minkova, I. O. ^{[1
]}

Astapovich, K. A. ^{[2
]}

机构：

[1] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

[2] Natl Acad Sci Belarus Mat Sci, Sci & Prod Ctr, Minsk 220072, BELARUS

来源：

PHYSICS OF THE SOLID STATE | 2020年 / 62卷 / 05期

基金：

俄罗斯科学基金会;

关键词：

hexaferrites; heterovalent substitution; titanium; Mossbauer spectroscopy; magnetic properties; X-ray diffraction; simultaneous thermal analysis; MOSSBAUER; FERRITES;

D O I：

10.1134/S1063783420050145

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The features of the composition, crystal, and magnetic structure of Ti-substituted barium hexaferrite BaFe12 - xTixO19 (0.25 <= x <= 1.5) are studied by Mossbauer spectroscopy, vibration magnetometry, X-ray diffraction, and simultaneous thermal analysis. Bounded heterovalent isomorphism implemented by the scheme 2Fe(3+) -> Ti4+ + Fe2+ while retaining the charge balance is established when Fe3+ ions are partially substituted with Ti4+ ions. An increase in the 3d-electron density and the presence of Fe2+ in BaFe12 - xTixO19 samples with x = 1.5 is detected by Mossbauer spectroscopy. The heterovalent isomorphic substitution limit is determined to be within 0.75 < x < 1.0. Using Mossbauer spectroscopy and X-ray diffraction, the formation of titanium-contained phases at x = 1.0 whose content increases with the degree of substitution is shown. The data on the preferential distribution of substituent ions (Ti4+) in the barium hexaferrite structure at the 12k and 2b sites are presented.

引用

页码：891 / 901

页数：11

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