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Combustion Synthesis of BaFe 12 O 19 in an External Magnetic Field: Time‐Resolved X‐ray Diffraction (TRXRD) Studies
Author(s) -
Affleck L.,
Aguas M. D.,
Pankhurst Q. A.,
Parkin I. P.,
Steer W. A.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200009)12:18<1359::aid-adma1359>3.0.co;2-p
Subject(s) - materials science , diffraction , magnetic field , combustion , ferrite (magnet) , barium ferrite , microstructure , self propagating high temperature synthesis , field (mathematics) , condensed matter physics , x ray , nuclear magnetic resonance , optics , composite material , physics , chemistry , mathematics , quantum mechanics , pure mathematics
Barium ferrite has a greatly reduced coercivity when it is produced (by self‐propagating high‐temperature synthesis) in the presence of an external magnetic field rather than zero field. This and other significant magnetic field effects, for example, an increase in the speed of the propagation wave, an increased reaction temperature, and a change in the microstructure (see Figure) are reported.