Results 191 to 200 of about 161,513 (250)

Improved Synthesis Methods for Barium Hexaferrite

Advanced Materials Research, 2011
BaFe12-2xMnxSnxO19 was synthesized by an improved co-precipitation method. Scanning electron microscopy images were characterised. The synthesis efficiency is discussed from the structure fundaments.
Ying Liu, Hong Sheng Yin, Yue Liu, Kun Sun, Yang Li, Li Li Wang, Wen Juan Xu   +6 more
openaire   +1 more source

Electric, dielectric and AC electrical conductivity study of Al3+ substituted barium hexaferrite nanoparticles synthesized by Sol-gel auto-combustion technique

, 2021
Al3+ substituted barium hexaferrite BaFe12-xAlxO19 (where × x = 0.00, 0.25, 0.50, 0.75,1.00) nanoparticles have been prepared by sol–gel auto combustion technique.
V. N. Dhage, M. L. Mane, S. Rathod, S. M. Rathod, K. M. Jadhav   +4 more
semanticscholar   +1 more source

Surface effects in barium hexaferrite nanoparticles

Journal of Magnetism and Magnetic Materials, 1999
Abstract Two BaFe 10.4 Co 0.8 Ti 0.8 O 19 samples of 45 and 7.6 nm mean particle diameter were studied. Static magnetic properties and low-field relaxation measurements indicate the presence of high-energy barriers in the nanometric powder, which cannot be associated with the intrinsic anisotropy.
M. García del Muro, X. Batlle, A. Labarta   +2 more
openaire   +1 more source

Coefficients of thermal expansion for barium hexaferrite

Journal of Applied Physics, 1996
The thermal expansion coefficients along the a axis (αa) and c axis (αc) of barium hexaferrite were measured from room temperature to 850 °C. The thermal expansion of barium hexaferrite along the a axis and c axis was found to be linear as a function of temperature, indicating constant thermal expansion coefficients over this temperature range.
P. C. Dorsey, S. B. Qadri, J. L. Feldman, J. S. Horwitz, P. Lubitz, D. B. Chrisey, J. B. Ings   +6 more
openaire   +1 more source

Synthesis and characterization of barium hexaferrite nanoparticles

Journal of Materials Processing Technology, 2007
Abstract This investigation dealt with the synthesis of nanocrystalline barium hexaferrite (BaFe12O19) powders through the co-precipitation–calcination route. The ferrite precursors were obtained from aqueous mixtures of barium and ferric chlorides by co-precipitation of barium and iron ions using 5 M sodium hydroxide solution at pH 10 in room ...
M. Radwan, M.M. Rashad, M.M. Hessien
openaire   +1 more source

Measurement of permittivity and permeability of barium hexaferrite

Journal of Magnetism and Magnetic Materials, 2018
Abstract The paper considers the results of measuring the electrodynamic parameters of a material based on barium hexaferrite with various degrees of substitution Ti(x) = 0; 0.25; 0.5; 1.0. The calculated dependences of dielectric permittivity and permeability obtained by measuring the powder material using the coaxial transmission line segment are ...
D.S. Klygach, M.G. Vakhitov, D.A. Vinnik, A.V. Bezborodov, S.A. Gudkova, V.E. Zhivulin, D.A. Zherebtsov, C.P. SakthiDharan, S.V. Trukhanov, A.V. Trukhanov, A.Yu. Starikov   +10 more
openaire   +1 more source

Synthesis of Barium Hexaferrite by the Oxidation of a Metallic Barium–Iron Precursor

Journal of the American Ceramic Society, 1997
Tapes of the hard magnetic ferrite, BaFe 12 O 19 , were synthesized by the oxidation of metallic barium and iron precursors. Milled mixtures of barium flakes and iron powder (Ba:Fe atomic ratio = 1:12) were sealed within fugitive silver tubes and then ...
Greg A. Ward, Kenneth H. Sandhage
openaire   +1 more source

Topochemical Sintering and Characterization of Barium Hexaferrite

Transactions of the Indian Ceramic Society, 1997
The topochemical sintering of barium hexaferrite utilizing stoichiometric mixtures of BaCO3 and αFe2O3/α-FeOOH raw materials has been investigated. The densification behaviour of BaO.6Fe2O3 in the temperature range of 1273 to 1573 K is studied with the help of a dilatometer. The nonisothermal dcnsification kinetics is derived from dilatometrie results.
J. L. Gumaste, M. M. Godkhindi, P. G. Mukunda, H. S. Ray   +3 more
openaire   +1 more source

Influence of Barium Hexaferrite on Magnetic Properties of Hydroxyapatite Ceramics

Journal of Nanoscience and Nanotechnology, 2015
Hydroxyapatite (HA) powders was derived from natural bovine bone by sequence of thermal processes. The barium hexaferrite (BF) find magnetic powders were added into HA powders in ratio of 1-3 vol.%. The HA-BF ceramics were prepared by a solid state reaction method and sintered at 1250 degrees C for 2 h.
P, Jarupoom, P, Jaita
openaire   +2 more sources

Ca-induced changes in the crystal structure and magnetic properties of barium hexaferrite

Bulletin of Materials Science, 2023
S. Verma, Ashutosh Kumar Singh, S. Godara, J. Ahmed, S. Alshehri, Mithilesh Singh   +5 more
semanticscholar   +1 more source