Results 171 to 180 of about 161,513 (250)
Some of the next articles are maybe not open access.
Ceramics International, 2021
In this study, the micro-emulsion approach was adopted to fabricate rare earth (Nd) and transition metal (Cu) co-doped barium hexaferrite (Ba1-xNdxFe12-yCuyO19) nanoparticles (NPs). The fabricated co-doped and undoped materials were characterized by FTIR,
Firdous Bibi +8 more
semanticscholar +1 more source
In this study, the micro-emulsion approach was adopted to fabricate rare earth (Nd) and transition metal (Cu) co-doped barium hexaferrite (Ba1-xNdxFe12-yCuyO19) nanoparticles (NPs). The fabricated co-doped and undoped materials were characterized by FTIR,
Firdous Bibi +8 more
semanticscholar +1 more source
Mechanical properties of barium hexaferrites
IEEE Transactions on Magnetics, 1979The mechanical properties of typical isotropic barium ferrites have been determined. A statistical analysis has shown that fracture toughness is the best quality parameter. It changes with variation of production operation conditions. The fracture statistics follows the Weibull distribution. A relationship is found between the influence of the Fe 2 O 3
CAVALLOTI P +3 more
openaire +3 more sources
Exchange interactions in barium hexaferrite
Physical Review B, 2005The electronic structure of $\mathrm{Ba}{\mathrm{Fe}}_{12}{\mathrm{O}}_{19}$ hexaferrite is calculated using the density functional theory and generalized gradient approximation (GGA). The $\mathrm{GGA}+\mathrm{U}$ method is used to improve the description of strongly correlated $3d$ electrons of Fe.
P. Novák, J. Rusz
openaire +1 more source
Enhanced Magnetic Properties of Barium Hexaferrite
Journal of Electronic Materials, 2020Samples having the composition BaFe12−2xCoxSmxO19 (x = 0.0, 0.2, 0.4, 0.6) are prepared by a WOWS (without water and surfactants) sol–gel technique, and the structural, morphological, and AC and DC electrical and magnetic properties of the samples are investigated.
Ghulam Asghar +9 more
openaire +1 more source
Lanthanum-substituted barium hexaferrites
Soviet Powder Metallurgy and Metal Ceramics, 1971A study was made of the effect of lanthanum oxide on the properties of barium hexaferrites. It is shown that, by introducing small quantities of lanthanum oxide, it is possible to produce a material with (BH)max of 0.9 · 106 G-Oe, which is practically unaffected by sintering temperature.
I. N. Frantsevich, L. N. Tul'chinskii
openaire +1 more source
Ceramics International, 2021
In the present work, was studied the effect of the La3+ cation solubility on the structural, magnetic and electrical properties of M-type barium hexaferrite (BaM). The Rietveld refinement revealed changes in the lattice parameters with increasing the La3+
P. Mariño-Castellanos +8 more
semanticscholar +1 more source
In the present work, was studied the effect of the La3+ cation solubility on the structural, magnetic and electrical properties of M-type barium hexaferrite (BaM). The Rietveld refinement revealed changes in the lattice parameters with increasing the La3+
P. Mariño-Castellanos +8 more
semanticscholar +1 more source
On the implantability of barium hexaferrite magnets
Clinical Materials, 1986The purpose of this study was to determine the suitability of using small barium hexaferrite magnets in implantable devices for the purpose of locating their exact position beneath the skin. From animal tests it is concluded that such magnets are a good method for locating implants, and that when properly prepared and encapsulated in silicone rubber ...
MD Craggs, PEK Donaldson, P Luthert
openaire +1 more source
Synthesis, structure and properties of barium and barium lead hexaferrite
Journal of Magnetism and Magnetic Materials, 2019Abstract Barium hexaferrite pellets were prepared by sintering method and single crystal was obtained by flux technique. The thermal expansion coefficients of Ba 0,3 Pb 0,7 Fe 12 O 19 single crystal along a and c axes are 9.9 * 10 –6 K –1 and 17.4 * 10 –6 K –1 . It is in a good agreement with thermal expansion coefficients of pellets. The
Gudkova, S.A. +13 more
openaire +2 more sources
The Preparation of Barium Hexaferrite Coatings Using HVOF
Journal of the American Ceramic Society, 2009Thick coatings of barium hexaferrite with the compositions BaFe 12 O 19 and BaCoTiFe 10 O 19 were prepared using high‐velocity oxygen ...
D. Lisjak +8 more
openaire +3 more sources
Domain structures in barium and strontium hexaferrites
Soviet Physics Journal, 1966Powder figures have been used to study the domain structure of monocrystals of barium hexaferrite; the domain boundaries on a side face respond to a magnetic field. The domain structure of strontium hexaferrite is reported; the star structure on the end face has a definite order, and the pattern changes to wavy bands as the thickness of the crystal is ...
A. I. Drokin, S. Sh. Gendelev
openaire +1 more source