Results 171 to 180 of about 5,135 (192)

Ferromagnetic resonance in hexaferrite nanopowders

Russian Physics Journal, 2008
Results obtained from experimental investigations into the effect of mechanical activation of a BaCoxTixFe12−2xO19 hexaferrite system (x = 1 and 1.2) with a low anisotropy field in a high-energy planetary mill on the structure and magnetic parameters of the powders are presented.
V. A. Zhuravlev, E. P. Naiden
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Hydrothermal synthesis of barium hexaferrite

High Pressure Research, 2001
Abstract The authors of the report carried out synthesis of barium hexaferrite (BHF) both in water vapor atmosphere and in liquid medium in the temperature range 200-400°C at pressures PH2O of 9-26MPa in laboratory autoclaves. The results of research have shown that BHF with the best performances can be obtained by thermovaporous treatment of dry ...
M. N. Danchevskaya, Yu. D. Ivakin, L. F. Martynova, G. P. Muravieva   +3 more
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Microwave Sintering of Baryum Hexaferrite

MRS Proceedings, 1994
ABSTRACTConventional sintering of baryum hexaferrite Co2Z leads to a mixture of phases with a low density. In this paper we try to obtain a pure densified CO2Z hexaferrite by microwave heating. The design of the applicator is computed from both the electromagnetic physical characteristics, the dimensions and the shape of the hexaferrite sample.
D. Rousselle, D. Autissier, B. Guillou, J. Leclerc   +3 more
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Highly Oriented SrM Tape Hexaferrite

IEEE Transactions on Magnetics, 2006
This paper reports on preparation of a magnetically anisotropic polycrystalline hexaferrite, Sr0.95Ca0.05Fe12O19, whose orientation degree is as high as 100%. The preparation uses standard ceramic techniques, including wet pressing and flowing-oxygen sintering.
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Remanence properties of barium hexaferrite

Journal of Alloys and Compounds, 2004
Abstract Barium hexaferrites have been widely used as permanent magnets, however one of the most important parameters that characterizes these ferrites is the switching field distribution (SFD). This work calculates the SFD on a small particle barium ferrite (BaFe 12 O 19 ) obtained by coprecipitation from chlorides in an alkaline medium using the ...
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Microwave behaviour in Z-type polycristalline hexaferrites

Le Journal de Physique IV, 1997
The hexaferrites present today a great interest in the field of electromagnetic waves absorbents. We have studied Ba 3 Co 2 Fe 24 O 41 Z-type hexaferrites.The origin of magnetic permeability in such polycrystalline materials is not so far perfectly known, especially in terms of relations between properties and microstructure. The purpose of this paper
P. Allegri, D. Autissier, T. Taffary
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Microwave-assisted synthesis of SrFe12O19 hexaferrites

Journal of Magnetism and Magnetic Materials, 2010
Abstract Ultra-fine and homogeneous SrFe 12 O 19 hexaferrites were synthesized by a microwave-assisted calcination route. The calcined precursors were prepared by a sol–gel auto-combustion method using Fe(NO 3 ) 3 ·9H 2 O, Sr(NO 3 ) 2 and citric acid as starting materials.
Wang Zhanyong, Zhong Liuming, Lv Jieli, Qian Huichun, Zheng Yuli, Fang Yongzheng, Jin Minglin, Xu Jiayue   +7 more
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Hexaferrite Permanent Magnets and Applications

2022
International ...
Le Breton, Jean-Marie, Nachbaur, Virginie, Fitchovora, Ogheneyunume   +2 more
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Magnetoelectric sensor excitations in hexaferrite films

Applied Physics Letters, 2015
We developed techniques for H- and E-field sensors utilizing single phase magnetoelectric (ME) hexaferrite thin films in the frequency range of 1 kHz to 10 MHz. The technique incorporating solenoid coils and multi-capacitors bank was developed to probe the physics and properties of ME hexaferrite film and explore ME effects for sensor detections and ...
Saba Zare, Jake Rabinowitz, Hessam Izadkhah, Sivasubramanian Somu, Carmine Vittoria   +4 more
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Recoil magnetization in partially oriented hexaferrites

IEEE Transactions on Magnetics, 1995
The magnetization was measured as a function of decreasing field on several polycrystalline hexaferrites that are potentially useful as microwave or millimeterwave materials, because of their low dielectric loss. The materials are partially oriented by compaction in a magnetic field or hot-forging. The observed magnetization vs.
E. Schloemann, R.J. Maher, J.A. Weiss
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