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首页> 外文期刊>journal of applied physics >Temperaturehyphen; and timehyphen;dependent properties of polycrystalline (Li,Na)NbO3solid solutions
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Temperaturehyphen; and timehyphen;dependent properties of polycrystalline (Li,Na)NbO3solid solutions

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Pressurehyphen;sintered LixNa1minus;xNbO3in the range 0.015les;xles;0.15 exhibits electromechanical properties amenable to highhyphen;frequency device applications with radialhyphen;frequency constantsfR(r) between 1.75 and 1.95 kHzthinsp;m, coupling coefficients up to 0.4, and permittivities between 100 and 200. The temperature and time dependencies offRare shown to be strongly related to composition, where forx=0.12, the temperature coefficient between minus;40 and 80thinsp;deg;C is minus;2times;10minus;4thinsp;deg;Cminus;1and the ageing coefficient is minus;2.5times;10minus;3per decade. The results are discussed in relation to composition and with respect to anomalies at phase transitions in (Li,Na)NbO3.

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