Showing papers in "Journal of Magnetism and Magnetic Materials in 1996"

TL;DR: In this paper, a new mechanism was proposed for exciting the magnetic state of a ferromagnet, where a transfer of vectorial spin accompanied an electric current flowing perpendicular to two parallel magnetic films connected by a normal metallic spacer.

TL;DR: Magnetic nanoparticles of cobalt ferrite (CoFe204) have been synthesized using water-in-oil microemulsions consisting of water, cetyl trimethyl ammonium bromide (surfactant), n-butanol (cosurfactant) and n-octane (oil) as mentioned in this paper.

TL;DR: In this article, the microstructural conditions required for high remanence and high coercivity isotropic permanent magnets were analyzed using a finite element technique, and an optimal microstructure consisting of small soft magnetic grains embedded between hard magnetic grains with a mean grain diameter of about D ≈ 20 nm was proposed.

TL;DR: The magnetic properties of Fe-and Co-based amorphous and nanocrystalline glass-coated microwires are reviewed in this paper, where the internal stresses are much stronger than for in-rotating-water quenched wires as a consequence of the presence of the glass coating and, coupled with magnetostriction, give rise to strong magnetoelastic anisotropies determining the magnetization process.

TL;DR: In this paper, a well-balanced series of MnZn and NiZn power ferrites has been developed for frequencies ranging from 10 kHz to 10 MHz, which are applied in highly efficient core assemblies with specially designed core shapes and windings.

TL;DR: NKK led the world in the construction of a continuous production line for manufacturing 6.5% silicon steel sheet in coil form using a CVD siliconizing process as discussed by the authors, which is a non-oriented, 6.1 mm thick, and excellent soft magnetic properties.

TL;DR: In this paper, two improvements to the reliability of magneto-granulometric analysis are presented, one considers the use of a two-parametric function to approximate the size distribution of particles and the second consists in taking into account the dipole-dipole interparticle interactions.

TL;DR: In this paper, the effect of temperature, frequency and composition on the dielectric behavior and ac electrical conductivity were studied for a series of Zn-substituted Ni-Mg ferrite samples prepared using the usual ceramic technique.

TL;DR: The determined magnetic moment of antiferromagnetically ordered Fe3+ ions is μFe = (3.70 ± 0.03)μB for BiFe03 and Bi0.93La0.07Fe03, respectively as mentioned in this paper.

TL;DR: In this article, the authors show that the spin-orbit coupling induced MCA energy is given by the difference in the fully relativistic band energies between two magnetization directions calculated with the same self-consistent scalar-relativistic potential.

TL;DR: In this article, fine CoFe 2 O 4 particles with average size of 50 A have been produced by coprecipitation from Fe(II and Co(II) solutions followed by a low-temperature calcination.

TL;DR: In this paper, the history and applications of disordered magnets and especially the spin glasses are briefly explained, and the following topical subjects are considered: (a) geometric frustration, (b) aging dynamics and (c) quantum spin glasses and liquids.

TL;DR: In this article, annealing of amorphous and nanocrystalline Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 ribbons under mechanical stress induces magnetic anisotropy.

TL;DR: In this paper, it is shown that the spinel-like structure is actually a masked hexaferrite structure where the Ba2+ ion in the hexagonal layer of the unit cell is engaged due to the presence of traces of carbon.

TL;DR: In this paper, the magnetic hyperfine field (mhf) acting on a 181 Ta probe dilutely substituted at the non-magnetic transition element site has been investigated in the Heusler alloys Co 2 VGa, Co 2 NbGa and Co 2 TaAl by TDPAC measurements utilizing the 133-482 keV gamma-gamma cascade in 181 Ta following the β − decay of 181 Hf.

TL;DR: In this paper, giant magnetoresistance (GMR) measurements performed on electrodeposited Co/Cu multilayered nanowires are discussed in the framework of the Valet-Fert model for perpendicular GMR.

TL;DR: In this article, a natural relation between the initial curve and the hysteresis loop in ensembles of noninteracting SDPs with uniaxial anisotropy is presented.

TL;DR: In this paper, a review of thin-film Ba ferrite is presented and the most recent results are presented using conventional rf diode sputtering, showing that the crystal orientations are predetermined by the structural anisotropy in the as-sputtered ‘amorphous’ state.

TL;DR: In this paper, the effects of microstructural refinement into the nanocrystalline range on the magnetic properties of iron-rare earth alloys are briefly reviewed and discussed.

TL;DR: In this article, a Co-Al-O thin film with network-like nano granular structure consisting of Co-based magnetic and metallic grains and A1 2 O 3 based nonmetallic intergrains was fabricated by Ar + O 2 reactive sputtering.

TL;DR: The magnetic and structural properties of as-quenched and crystallized Fe 73.5 Si 15.5 B 7 Cu 1 Nb 3 and Fe 86 Zr 7 B 6 Cu 1 alloys with Co partially substituted for Fe were investigated in this article.

TL;DR: In this paper, the magnetic properties of nanocrystalline melt-spun single-phase (Nd 2 Fe 14 B-type) and composite magnet have been studied systematically in an attempt to understand better their exchange spring behavior.

TL;DR: In this paper, the Wohlfarth superparamagnetic blocking model with no interaction between the particles was used to measure the ac linear and nonlinear susceptibilities of ferromagnetic cobalt fine particles.

TL;DR: A phenomenological theory for the magnetic field dependence of the magnetoresistance (MR) of a granular sample containing very small superparamagnetic particles embedded in a nonmagnetic host is presented in this paper.

TL;DR: The magnetic susceptibility measurements of the LiNiPO 4 and LiCoPO 4 compounds are consistent with 3D antiferromagnetic behaviour as mentioned in this paper, and the magnetic exchange value for the LiLiPO 4 phase is −5.61 K, with a g -value of 2.15.

TL;DR: In this paper, the authors analyzed the high-speed switching behavior of a wide range of commercial and experimental magnetic tapes and concluded that the results are in reasonable agreement with the Landau-Lifshitz damping-limited switching model but only if values of the damping constant α ≈ 1 are assumed, in conflict with the experimentally reported values in some samples.

TL;DR: In this article, the stress dependence of the magneto-impedance effect is explored to estimate the magnetostriction constant and its stress derivative on a nearly non-magnetostrictive Co 68.1 Fe 4.4 Si 12.5 B 15 amorphous wire.

TL;DR: In this paper, a review of the giant magneto-impedance (GMI) in co-rich amorphous wires and films, in which effects with sensitivity up to 100 and 8%/Oe, respectively, have been reported even for tiny samples.

TL;DR: In this article, the structural parameters and their variation with manganese concentration for the diluted magnetic semiconductors Hg 1 − x Mn x S ( x ≤ 0.33) and Cd 1− x Mn X S (x ≥ 0.43), as obtained by X-ray powder diffraction.

TL;DR: In this article, bismuth-substituted nickel-zinc ferrites have been synthesized by a solution route in the composition range Ni 0.5 Zn 0.4 Bi x Fe 2.0− x O 4, with 0 ≤ x ≤ 0.2.