Results 161 to 170 of about 9,112 (215)
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Effective magnetostriction of magnetostrictive composites
Applied Physics Letters, 1998An analytical method is developed for the effective magnetostriction of magnetostrictive composites based on Green’s function technique. For an elastically isotropic composite of magnetostrictive and nonmagnetostrictive phases, the analytical results give explicit effective-medium approximate formulas for the effective magnetostriction that fit well ...
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A new method of magnetostrictivity and magnetostriction measurement
IEEE Transactions on Magnetics, 1989The magnetostrictivity (d) and magnetostriction ( lambda ) of high coupling magnetomechanical amorphous ribbons and wires are determined without the use of a direct magnetomechanical measurement. The method relies on an easily measured magnetic property (permeability) of the magnetostrictive material obtained under the conditions of constant stress and
A.E. Clark, M. Wun-Fogle
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1997
Abstract Magnetostriction is the phenomenon whereby the shape of a ferromagnetic specimen changes during the process of magnetization. The deformationδl/ldue to magnetostriction is usually very small, in the range 10−5 to 10−6 A deformation of this magnitude can be conveniently measured by means of a strain-gauge technique, the ...
Sōshin Chikazumi, C D Graham, Jr
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Abstract Magnetostriction is the phenomenon whereby the shape of a ferromagnetic specimen changes during the process of magnetization. The deformationδl/ldue to magnetostriction is usually very small, in the range 10−5 to 10−6 A deformation of this magnitude can be conveniently measured by means of a strain-gauge technique, the ...
Sōshin Chikazumi, C D Graham, Jr
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Near-zero magnetostriction in magnetostrictive FeCo alloys
Scripta Materialia, 2021Abstract Soft magnetic metallic materials are the key components in generators, motors and transformers. The Curie temperatures of currently used soft magnetic metallic materials limit their applications in high-temperature environments.
Rui Zhang +8 more
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Magnetostrictive microelectromechanical loudspeaker
The Journal of the Acoustical Society of America, 2013A microelectromechnical-loudspeaker based on the magnetostrictive effect is presented. The membrane consists of a comb structure of monomorph bending cantilevers with an area of about 16 mm2. Prototypes generate a sound pressure level (SPL) of up to 102 dB at 450 Hz with a total harmonic distortion of 2% inside a 2 cm3 measurement volume.
Thorsten S, Albach, Reinhard, Lerch
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Journal of Applied Physics, 1968
This paper reviews work since 1961 on magnetostriction, including both its sources and its temperature and magnetic field dependence beyond saturation (forced magnetostriction). A statistical theory of the magnetostriction of ferromagnets is in fine agreement with experiments on nickel and on heavy rare-earth metals, which are reviewed in detail.
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This paper reviews work since 1961 on magnetostriction, including both its sources and its temperature and magnetic field dependence beyond saturation (forced magnetostriction). A statistical theory of the magnetostriction of ferromagnets is in fine agreement with experiments on nickel and on heavy rare-earth metals, which are reviewed in detail.
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Magnetostriction of a granular superconductor
Physical Review B, 1993An exactly solvable model for the magnetostriction (MS) of a granular superconductor is presented. Both the bulk-modulus-driven magnetostriction'' (the change of the sample's volume in the magnetic free energy upon the applied stress) and the change-of-phase magnetostriction'' (due to the stress dependence of the weak-links-induced magnetization) are ...
, Sergeenkov, , Ausloos
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Magnetostriction Measurement By Interferometry
[1993] Digests of International Magnetics Conference, 1993A laser Doppler interferometric method using synchronous detection to measure the magnetostriction of soft magnetic films is described. The instrument measures 2 AA magnetostrictive deflections of Permalloy films on 500 mu m silicon substrates. Saturation magnetostriction of 10/sup -9/ can be measured for 1000 nm films on 100 mu m Si substrates.
G.H. Bellesis +3 more
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AIP Conference Proceedings, 2002
Elastic waves are generated in a ferromagnetic material in a static magnetic field by a time-varying magnetic field which magnetostrictively couples to the material. We present modeling showing that this coupling is proportional not to the magnetostriction, but to the magnetization derivative of the static magnetostriction.
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Elastic waves are generated in a ferromagnetic material in a static magnetic field by a time-varying magnetic field which magnetostrictively couples to the material. We present modeling showing that this coupling is proportional not to the magnetostriction, but to the magnetization derivative of the static magnetostriction.
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Permeability dependence of the effective magnetostriction of magnetostrictive composites
Journal of Applied Physics, 2004A model is presented in this article to investigate the dependence of effective magnetostriction of the magnetostrictive composites on the parameters of components including the elastic modulus, permeability, and volume fraction, etc. Concentrating on the two-component magnetostrictive composites and choosing the two components to be general ...
Y. P. Wan, Z. Zhong, D. N. Fang
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