Estimation of dynamic parameters of overthreshold parametric phase conjugation of ultrasound in magnetostrictive ferrites according to data of quasi-static measurements - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physics of Wave Phenomena Année : 2008

Estimation of dynamic parameters of overthreshold parametric phase conjugation of ultrasound in magnetostrictive ferrites according to data of quasi-static measurements

Résumé

A simple method for testing ferrite samples intended to be active elements of parametric phase conjugator of ultrasound was proposed and experimentally approved. The method allows one to estimate such dynamic parameters of parametric phase conjugator of ultrasound as the parametric amplification increment, threshold of absolute parametric instability, and optimum operating point position for a particular sample using results of measurements in a dc magnetic field. Results for two ferrite samples of different compositions and properties were compared to direct measurement data; their satisfactory agreement was obtained.
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Dates et versions

hal-00800675 , version 1 (14-03-2013)

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Andrey Brysev, Philippe Pernod, Vladimir L. Preobrazhensky. Estimation of dynamic parameters of overthreshold parametric phase conjugation of ultrasound in magnetostrictive ferrites according to data of quasi-static measurements. Physics of Wave Phenomena, 2008, 16, pp.80-85. ⟨10.3103/S1541308X08020027⟩. ⟨hal-00800675⟩
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