Results 141 to 150 of about 825 (188)

Ion Diffusion and Disaccommodation in Ferrites

Japanese Journal of Applied Physics, 1968
In various mixed ferrites, the relationship between disaccommodations (DA) and cation vacancy densities was investigated, the latter being estimated from the diffusion coefficients of isotopes. The relaxation time of DA–I observed at approximately 250°C was in agreement with an extrapolated value from the cation diffusion at elevated temperatures ...
Seiya Ogawa, Tomoen Nakajima, Tatsuji Sasaki, Masaru Takahashi   +3 more
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Disaccommodation measurements in amorphous wires

Journal of Magnetism and Magnetic Materials, 1992
Abstract Stress dependent magnetic disaccommodation is studied for high and low magnetostrictive amorphous wires and ribbons. The results are interpreted considering the particular domain structure developed in amorphous wires during preparation.
S.P.Cruz Filho, M. Knobel, J.P. Sinnecker, R.Sato Turtelli, M. Vázquez   +4 more
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Disaccommodation in manganese-zinc ferrite

Journal of Physics D: Applied Physics, 1971
The temperature spectrum of disaccommodation for manganese-zinc ferrous-ferrite toroidal specimens is studied using two methods of magnetic shock. One of these methods, namely, disturbance using a capacitor discharge (ac demagnetization), produces a broad maximum in the disaccommodation against temperature characteristic.
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Disaccommodation in Fe-Al alloys

Physica Status Solidi (a), 1970
In Fe-Al alloys only two regions of disaccommodation are found. The first at about 0°C is caused by the Snoek-effect and the second at about 400°C by reorientation of substituted Al atoms. The temperature dependence of the disaccommodation agrees well with the calculated one.
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Magnetic disaccommodation in Sr doped magnetite

Le Journal de Physique IV, 1998
The relaxation of the initial permeability is measured in polycrystalline strontium doped magnetite with initial compositions SrO-nFe 2 O 3 , with n ranging between n=16 and n=122.34. The samples have been sintered at 1300° C in a reducing CO 2 atmosphere and rapidly quenched to provide the presence of crystal vacancies In the temperature range ...
P. Hernández Gómez, C. de Francisco, J. M. Muñoz, O. Alejos, C. Torres, M. Zazo   +5 more
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Disaccommodation in a nearly zero magnetostriction metallic glass

Journal of Magnetism and Magnetic Materials, 1984
Abstract Disaccommodation (DA) and accommodation (A) processes showing up in the time dependence of the permeability were investigated in Fe-Co-based metallic glasses with nearly zero magnetostriction. It was found that in some alloys there are anomalously large DA and A processes.
C. Kopasz, C. Hargitai, M. Hossó, I. Nagy, T. Tarnóczi   +4 more
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Magnetic Disaccommodation in Ferrites with Nonmagnetic Divalent Substitutions

Japanese Journal of Applied Physics, 2001
The after-effect processes in magnetite with nonmagnetic divalent substitutions are studied by means of disaccommodation techniques. We have recorded at room and high temperatures the time evolution of the initial magnetic susceptibility after sample demagnetization for polycrystalline specimens with nominal composition MxFe3-x O4+
Óscar Alejos Francisco, José María Muñoz, Pablo Hernández-Gómez Arias   +2 more
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Disaccommodation of Permeability on CoZrNb Amorphous Thin Films

IEEE Translation Journal on Magnetics in Japan, 1987
The deterioration of the permeability of CoZrNb amorphous films is discussed. The permeability was measured using a B-H loop tracer, and the deterioration with heat treatment or aging in ac magnetic fields. Deterioration is more pronounced in thinner films, but no deterioration was observed in samples aged in ac magnetic fields.
H. Kobayashi, K. Sumiya, N. Nishimura
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Permeability disaccommodation and structural stability of metallic glasses

Physica Scripta, 1989
Disaccommodation of permeability (DA), in particular the measuring field Hmp corresponding to the maximum of DA, were investigated in connection with structural stability of a λ = 0 metallic glass. Kinetic curves of Hmp for diversely heat treated toroids were measured and qualitatively evaluated to show the physical meaning of Hmp.
P Butvin, B de Ronzyová, M Hlásnik
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The influence of the skineffect on the disaccommodation of the initial permeability

Czechoslovak Journal of Physics, 1976
The very sensitive and convenient ac techniques of the disaccommodation measurements in metals are substantially influenced by the skineffect. This influence has been calculated in higher approximations and it is shown that the influence of the skineffect depends not only on the frequency of the measuring field and on the diameter and material ...
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