Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure

被引：46

作者：

Cebela, Maria ^{[1
]}

Jankovic, Bojan ^{[2
]}

Hercigonja, Radmila ^{[2
]}

Lukic, Miodrag J. ^{[3
]}

Dohcevic-Mitrovic, Zorana ^{[4
]}

Milivojevic, Dusan ^{[5
]}

Matovic, Branko ^{[1
]}

机构：

[1] Univ Belgrade, Vinca Inst Nucl Sci, Lab Mat Sci, Belgrade, Serbia

[2] Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16,POB 137, Belgrade 11001, Serbia

[3] Serbian Acad Arts & Sci, Inst Tech Sci, Knez Mihailova 35-4, Belgrade 11000, Serbia

[4] Univ Belgrade, Inst Phys, Ctr Solid State Phys & New Mat, Pregrev 118, Belgrade 11080, Serbia

[5] Univ Belgrade, Vinca Inst Nucl Sci, Dept Radiat Chem & Phys, Belgrade, Serbia

来源：

PROCESSING AND APPLICATION OF CERAMICS | 2016年 / 10卷 / 04期

关键词：

multiferroics; BiFeO3; microstructure; electronic paramagnetic resonance; magnetic properties; MAGNETIC-PROPERTIES;

D O I：

10.2298/PAC1604201C

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 degrees C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ - O-V defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.

引用

页码：201 / 208

页数：8

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