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Effect of Magnetoelastic Coupling on Elastic Constants of Magnetostrictive Crystals

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The effects of magnetoelastic coupling on higher order elastic constants have been worked out considering acoustic second harmonic generation in magnetostrictive crystals. Expressions for second and third order elastic constants have been related to the material constants of crystal. It is found that the elastic constants in the absence of magnetic field are lower than the corresponding values in the presence of the magnetic field. The case of propagation of longitudinal acoustic waves in a nickel crystal along the Z-axis has been considered. It is found that the effective second order elastic constants differ by 2% from their field free values.
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Document Type: Research Article

Publication date: December 1, 1970

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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