Results 181 to 190 of about 2,761 (198)

Preparation and magnetic properties of BaFe12O19 particles coated with epitaxially grown Fe3O4 layers:6xFe3O4(1 − x)BaFe12O19

Journal of Solid State Chemistry, 1992
Abstract Platelike particles of BaFe 12 O 19 with epitaxially grown Fe 3 O 4 overlayers,6 x Fe 3 O 4 (1 − x )Ba Fe 12 O 19 , were prepared by a wet method. The structure was characterized by X-ray diffraction and TEM and SEM observations. Magnetic properties were studied by VSM and Moossbauer spectroscopic measurements.
M. Kiyama, T. Honmyo, N. Nakayama, T. Shinjo   +3 more
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Sol–gel synthesis of Ce-substituted BaFe12O19

Journal of Materials Science, 2007
Ce-substituted BaFe12O19 (BaCexFe12−xO19, x = 0, 0.01, 0.03, 0.05) was prepared by citrate sol–gel method. The thermal decomposition process of precursor was investigated by TG-DSC. The phase composition of the BaCexFe12−xO19 was characterized by X-ray powder diffraction analysis (XRD) which reveals that the BaCexFe12−xO19 crystallizes in a hexagonal ...
Chang Sun, Kangning Sun
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Surface spin canting in BaFe12O19 fine particles

Journal of Magnetism and Magnetic Materials, 1993
Several samples of BaFe12O19 were prepared by the ‘liquid mix’ technique. The dependence of both particle size and macroscopic magnetic parameters on the synthesis procedure was studied by means of X-ray powder diffraction and high-field magnetization measurements.
X. Batlle, X. Obradors, M. Medarde, J. Rodríguez-Carvajal, M. Pernet, M. Vallet-Regí   +5 more
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Thermal Plasma Synthesis of BaFe12O19 (BaM) Films

Plasma Chemistry and Plasma Processing, 2003
Barium Ferrite (BaFe12O19) films have been successfully deposited on high silica glass substrates using an inductively coupled plasma source. Precursor of the metals used was a barium acetate and ferric nitrate solution of controlled concentration which was injected into the hot region of the plasma using a nebulizer.
Edgar E. Vidal, Patrick R. Taylor
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Dielectric properties of Sb2O3-doped BaFe12O19 ferrite

Journal of Applied Physics, 2005
Dielectric measurements were carried out on specimens with compositions BaO.(6−x)Fe2O3.xSb2O3 with x having values of 0.0, 0.025, 0.1, and 0.3. Sb2O3 doping increases the dielectric permittivity drastically. Two loss peaks of similar activation energies were observed.
P. Brahma, S. Banerjee, D. Chakravorty
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Shock wave demagnetization of BaFe12O19 hard ferrimagnetics

Journal of Applied Physics, 2002
A study of the effect of shock waves on the phase state of a hard ferrimagnetic material has been performed. A plane shock wave was passed along the axis of a cylindrical BaFe12O19 hard ferrite magnet. The shock wave demagnetized the cylinder, reducing the magnetic flux.
S. I. Shkuratov, E. F. Talantsev, J. C. Dickens, M. Kristiansen   +3 more
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Synthesis and characterization of small BaFe12O19 particles

Journal of Magnetism and Magnetic Materials, 1995
Abstract Fine particles of BaFe12O19 have been successfully prepared using a combustion method and annealed at 700, 750, 850 and 1000°C to obtain particles with average diameter in the range 50–200 nm. The structural properties observed by X-ray diffraction in conjunction with the hyperfine characteristics estimated from room temperature Mossbauer ...
S. Castro, M. Gayoso, C. Rodríguez, J. Mira, J. Rivas, S. Paz, J.M. Grenèche   +6 more
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Dielectric properties of Ti4+ substituted BaFe12O19 nanoparticles

Physica B: Condensed Matter, 2017
Abstract Series of nanocrystalline BaTixFe12-(4/3)xO19 hexagonal ferrites, 0≤x≤1, was prepared using the chemical co-precipitation method. As-prepared samples were heated at 1200 °C for 20 h and slowly cooled to room temperature (RT). XRD studies proved that the samples have single phase M-type hexagonal nanostructure, where their grain size lies in ...
A.I. Ghoneim, M.A. Amer, T.M. Meaz, S.S. Attalah   +3 more
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Ultrafine BaFe12O19 powder synthesised by mechanochemical processing

Journal of Magnetism and Magnetic Materials, 1998
Abstract Ultrafine BaFe 12 O 19 powder has been synthesised by a novel mechanochemical preparation method. Mechanical milling of 1.2BaCl 2 + 12FeCl 3 + 38.4NaOH led to a mixture of NaCl and iron and barium hydroxide or oxidehydroxide. The formation of BaFe 12 O 19 required annealing at 800°C in air.
Ding, J., Tsuzuki, T., McCormick, P.G.
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Preparation and characterization of BaFe12O19/Y3Fe5O12 composites

Journal of Alloys and Compounds, 2015
Abstract BaFe12O19/Y3Fe5O12 (BaM/YIG) composites with giant enhancement of magnetic energy product ((BH)max) were fabricated by microwave sintering the BaM/YIG composite powders, which were firstly prepared using a simple sol–gel method. The phase composition and surface morphology of the as-synthesized composites were characterized by an X-ray ...
Ying Lin, Pan Kang, Haibo Yang, Miao Liu
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