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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1145-1155 
    ISSN: 0392-6737
    Keywords: Acoustical properties of solids ; Ultrasonics, quantum acoustics and physical effects of sound ; Transduction, devices for the generation and reproduction of sound
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Un sistema interferometrico laser a spostamento è stato adattato per misurare gli spostamenti meccanici di campioni di materiali piezoelettrici e ferroelettrici trascinati da campi elettrici ciclici. Si trova che possono esistere risonanze meccaniche di ampiezza abbastanza grande indipendentemente da qualsiasi apprezzabile disturbo elettrico. Le si riscontra anche in campioni vergini e depolarizzati di ceramiche ferroelettriche. Le prime prove sperimentali suggeriscono che questo fenomeno dipende nella struttura a domìni dei materiali ferroelettrici.
    Abstract: Резюме Смещние лазерной интерферометрической системьи бьило приспособ-пено для измерения меанических смещений образцов пяезоэлектрических и ферроэлектрических материалов, вьизванньих циклическими электрическими полями. Обнаружено, что мэханические резонансьо с довольно большми амплитудами могут существоать независимо для любьих заметньих электрических возмушений. Эти резонансьи также обнаруженьи в образцах феррозлектрической кереники. Предварительньие экспериментальньие результатьи свипетельствуют, что это явление зависит от домэмами струкурьи ферроэлектричэскик матэроалпв.
    Notes: Summary A displacement laser interferometer system has been adapted to measure the mechanical displacements of specimens of piezoelectric and ferroelectric materials driven by cyclic electric fields. It is found that mechanical resonances of quite large amplitudes can exist independent of any noticeable electrical disturbances. They are also detected in virgin and depoled specimens of ferroelectric ceramics. Preliminary experimental evidence suggests that this phenomenon depends on the domain structure of the ferroelectric materials.
    Type of Medium: Electronic Resource
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