M Azadeh, A Frisch, K Ichihashi, Y Hirose, J Rodel, J Koruza, L Fulanoviae
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引用次数: 0
Abstract
Piezoelectric ceramics tailored for high-power resonance applications are investigated, utilizing a composite structure comprising the ferroelectric phase (K,Na)NbO3 as a matrix integrated with the alkali titanoniobate dielectric phase KTiNbO5. Achieving a mechanical quality factor of 750, comparable to lead-based counterparts, highlights their suitability for demanding applications. Crucially, these ceramics exhibit exceptional temperature stability of electromechanical properties, a critical attribute for real-world applications subject to temperature variations. Characterization employs the small signal resonance method and high-power resonance measurements. Notably, within the 25 to 200 °C range, minimal decay of the mechanical quality factor is observed, affirming robust temperature stability under high-power conditions.
期刊介绍：
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control includes the theory, technology, materials, and applications relating to: (1) the generation, transmission, and detection of ultrasonic waves and related phenomena; (2) medical ultrasound, including hyperthermia, bioeffects, tissue characterization and imaging; (3) ferroelectric, piezoelectric, and piezomagnetic materials, including crystals, polycrystalline solids, films, polymers, and composites; (4) frequency control, timing and time distribution, including crystal oscillators and other means of classical frequency control, and atomic, molecular and laser frequency control standards. Areas of interest range from fundamental studies to the design and/or applications of devices and systems.
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