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Preparation and Magnetic Properties of Barium Hexaferrite Nanoparticles Produced by the Citrate Process
Author(s) -
Zhong Wei,
Ding Weiping,
Jiang Yumei,
Zhang Ning,
Zhang Jianrong,
Du Youwei,
Yan Qijie
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb03264.x
Subject(s) - barium ferrite , calcination , materials science , coercivity , transmission electron microscopy , magnetism , nanoparticle , sol gel , magnetization , barium , homogeneous , chemical engineering , ferrite (magnet) , analytical chemistry (journal) , nanotechnology , metallurgy , condensed matter physics , chemistry , composite material , thermodynamics , magnetic field , chromatography , catalysis , physics , quantum mechanics , engineering , biochemistry
The sol‐gel synthesis technique has been used to produce barium ferrite particles. Several methods such as X‐ray diffractometry, transmission electron microscopy, and magnetism measurement (VSM) have been used to obtain detailed information on the crystallography and magnetic properties of the precursor and the calcined particles. The correlation of BaFe 12 O 19 formation with the precursor properties and thermal treatment has been studied. The optimum conditions for preparing BaFe 12 O 19 nanoparticles at a low calcining temperature are reported, and homogeneous ultrafine BaFe 12 O 19 with almost‐ideal single‐domain behavior and coercive force (5950 Oe) and specific magnetization (70 emu/g) values that are similar to the theoretically predicted values is obtained.