Synthesis and characterization of nano crystalline BaFe12O19 powders by low temperature combustion

被引：165

作者：

Huang, JG ^{[1
]}

Zhuang, HR ^{[1
]}

Li, WL ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2003年 / 38卷 / 01期

关键词：

magnetic materials; nanostructure; magnetic properties; microstructure;

D O I：

10.1016/S0025-5408(02)00979-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nano crystalline BaFe12O19 powders have been prepared at a relatively low calcination temperature by a gel combustion technique using citric acid as a fuel/reductant and nitrates as oxidants. The effects of processing parameters, such as Ba/Fe ratio, citric acid/nitrates ratio, reaction temperature on the powder characteristics and magnetic properties of the resultant barium ferrites were investigated. By controlling the molar ratio of citric acid to metal nitrates, nano crystalline BaFe12O19 powders with different particle sizes have been obtained. Phase attributes, microstructures and magnetic properties of the powders were characterized using X-ray diffraction analysis, X-ray line-broadening technique, Fourier transform infrared spectroscopy measurements, transmission electron microscopy and vibrating sample magnetometer. The maximum saturation magnetization value and intrinsic coercivity value for the obtained barium hexaferrites are 59.36 emu/g and 5540 Oe. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：149 / 159

页数：11

共 17 条

[1] Microstructural aspects of the self-propagating high temperature synthesis of hexagonal barium ferrites in an external magnetic field [J].

Affleck, L ;

Aguas, MD ;

Parkin, IP ;

Pankhurst, QA ;

Kuznetsov, MV .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (08) :1925-1932

[2] MOLTEN-SALT SYNTHESIS OF SINGLE MAGNETIC DOMAIN BAFE12O19 AND SRFE12O19 CRYSTALS [J].

ARENDT, RH .

JOURNAL OF SOLID STATE CHEMISTRY, 1973, 8 (04) :339-347

[3] PRODUCTION OF STRONTIUM-SUBSTITUTED LANTHANUM MANGANITE PEROVSKITE POWDER BY THE AMORPHOUS CITRATE PROCESS [J].

BAYTHOUN, MSG ;

SALE, FR .

JOURNAL OF MATERIALS SCIENCE, 1982, 17 (09) :2757-2769

[4] Nonconventional methods for obtaining hexaferrites - II. Barium hexaferrite [J].

Carp, O ;

Barjega, R ;

Segal, E ;

Brezeanu, M .

THERMOCHIMICA ACTA, 1998, 318 (1-2) :57-62

[5] Barium ferrite nanoparticles prepared directly by aerosol pyrolysis [J].

Gonzalez-Carreño, T ;

Morales, MP ;

Serna, CJ .

MATERIALS LETTERS, 2000, 43 (03) :97-101

[6] PREPARATION OF HIGH-COERCIVITY BAFE12O19 [J].

HANEDA, K ;

MIYAKAWA, C ;

KOJIMA, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1974, 57 (08) :354-357

[7] A NEW APPROACH TO THERMOCHEMICAL CALCULATIONS OF CONDENSED FUEL-OXIDIZER MIXTURES [J].

JAIN, SR ;

ADIGA, KC ;

VERNEKER, VRP .

COMBUSTION AND FLAME, 1981, 40 (01) :71-79

[8] The effects of synthesis variables on the magnetic properties of coprecipitated barium ferrite powders [J].

Janasi, SR ;

Emura, M ;

Landgraf, FJG ;

Rodrigues, D .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 238 (2-3) :168-172

[9]

Kojima H., 1982, FERROMAGNETIC MAT, V3

[10] SYNTHESIS OF LANTHANUM ALUMINATE BY A CITRATE-COMBUSTION [J].

KUMAR, MDS ;

SRINIVASAN, TM ;

RAMASAMY, P ;

SUBRAMANIAN, C .

MATERIALS LETTERS, 1995, 25 (3-4) :171-174

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