Results 121 to 130 of about 825 (188)
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Mechanism of Disaccommodation in Ferrites
Journal of the Physical Society of Japan, 1962Theory and experimental techniques developed in the study of the uniaxial anisotropy in iron-cobalt ferrites have been applied to the disaccommodation phenomena in ferrites. The results have shown clearly and quantitatively that the underlying mechanisms are essentially the same in these two phenomena, i.e., process of reorientation of the ionic ...
S. Iida
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Mechanism of Disaccommodation in Ferrite
Journal of the Physical Society of Japan, 1962The time decrease of the magnetic permeability after demagnetization, so called disaccommodation, was observed for Ni–Zn ferrite, which had various degrees of oxidation. The effect of the existence of Fe 2+ ion in disaccommodation was detected. Fe 2+ facilitates the diffusion of cation and makes the disaccommodation rapid.
A. Yanase
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Magnetic disaccommodation in Sn substituted magnetite
Journal of Magnetism and Magnetic Materials, 2001Abstract The relaxation of the initial magnetic permeability has been measured in polycrystalline Sn-doped magnetite with nominal composition Sn x Fe 3− x O 4 with x ranging from x =0 to 0.6. In the temperature range between 80 and 500 K, the time decay of the initial permeability after sample demagnetization has been represented by means of ...
P. Hernández-Gómez +5 more
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Data processing for magnetic disaccommodation spectroscopy
IEEE Transactions on Magnetics, 1989The authors address the problems of analyzing experimental data obtained from magnetic disaccommodation measurements in order to extract information about the nature of the underlying phenomena. Some data processing methods commonly used in this type of investigation are reviewed, and novel techniques aimed at the optimization of the signal-to-noise ...
C. D. De Francisco +2 more
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A Method for Profiling Biometric Changes During Disaccommodation
Optometry and Vision Science, 2012ABSTRACT Purpose. To demonstrate the application of low‐coherence reflectometry to the study of biometric changes during disaccommodation responses in human eyes after cessation of a near task and to evaluate the effect of contact lenses on low‐coherence reflectometry biometric measurements.
Alison J. Alderson +3 more
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Limiting disproportionate disaccommodation in design for human variability
Ergonomics, 2014In the design of artefacts, tasks and environments for human use, the body dimensions of the target population are a critical element in spatial optimisation of the design. This study examines how the choices designers make affect the ability of different user groups to safely and effectively interact with a designed artefact. Due to the variability in
Charlotte de Vries, M. Parkinson
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Automatic disaccommodation measuring system
IEEE Transactions on Magnetics, 1987Magnetic after effect measurement constitutes an advantageous procedure for the investigation of point defects giving considerable information about the crystal lattice dynamics. Unfortunately, most standard measuring methods involve tedious impedance bridges which are not suitable for systematic research.
C. D. De Francisco +3 more
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Magnetic Disaccommodation in Ferrous Zinc Ferrites
Physica Status Solidi (a), 1988Magnetic disaccommodation in the temperature range 80K≧T≧420K, is investigated for nonstoichiometric zinc ferrites (ZnxFe3-x-ΔO4) as a function of the nominal composition (0 ≦ × ≦ 0.5) and the oxygen partial pressure during sintering stage (10−2 atm ...
C. D. De Francisco +3 more
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On the Mechanism of Disaccommodation in Ferrites
Journal of the Physical Society of Japan, 1962The dependence of the disaccommodation spectra on the density of cation vacancies has been investigated in the manganese- and nickel-iron-rich ferrites and the results compared with the dependence predicted by Iida (1) . It is found that his model is not applicable to the disaccommodation effect occurring at room temperature.
A. Braginski, T. Merceron
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The magnetic disaccommodation in aluminium ferrites
Journal of Magnetism and Magnetic Materials, 1999Abstract The domain wall stabilization processes in aluminium substituted magnetite is investigated by means of disaccommodation techniques. The time evolution of the initial magnetic susceptibility after sample demagnetization is measured for polycrystalline specimens with nominal composition Al x Fe 3− x O 4 , 0⩽ x ⩽1, around room temperature ...
Luis Torres, Carlos Torres, J M Munoz
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