Synthesis and properties of indium-doped hematite

被引：33

作者：

Krehula, Stjepko ^{[1
]}

Ristic, Mira ^{[1
]}

Reissner, Michael ^{[2
]}

Kubuki, Shiro ^{[3
]}

Music, Svetozar ^{[1
]}

机构：

[1] Rudjer Boskovic Inst, Div Mat Chem, POB 180, HR-10002 Zagreb, Croatia

[2] TU Wien, Inst Solid State Phys, A-1040 Vienna, Austria

[3] Tokyo Metropolitan Univ, Grad Sch Sci & Engn, Dept Chem, Minami Osawa 1-1, Hachioji, Tokyo 1920397, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 695卷

关键词：

Hematite; Indium; Mossbauer spectroscopy; Morin transition; X-ray diffraction; FE-SEM; MAGNETIC-PROPERTIES; MORIN TRANSITION; MOSSBAUER-SPECTROSCOPY; NEUTRON-DIFFRACTION; PARTICLE-SIZE; STRUCTURAL-CHARACTERIZATION; MICROSTRUCTURAL PROPERTIES; SUBSTITUTED HEMATITES; WEAK FERROMAGNETISM; CRYSTAL-STRUCTURE;

D O I：

10.1016/j.jallcom.2016.11.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Indium-doped hematite samples were prepared by calcination of indium-doped goethite samples and investigated using different instrumental techniques. In3+-for-Fe3+ substitution in the hematite structure was confirmed by the determination of the unit cell expansion using X-ray powder diffraction and by the measurement of the hyperfine magnetic field reduction using Mossbauer spectroscopy. Indium substitution in hematite also caused a decrease in the crystallite size, an increase in the particle size, a shift in the position of bands in infrared spectra, a decrease in the relative intensity of absorption bands in UV-Vis-NIR spectra and a disappearance of the Morin transition. Maximum substitution was estimated at about 8 mol%. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1900 / 1907

页数：8