MgO:LiNbO/ sub3 /晶体的频率响应

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1994-08-07 DOI:10.1109/ISAF.1994.522356

B. Jin, N. Bhalla, I. Kim, B. C. Park

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引用次数: 0

摘要

用Czochralski法生长了掺mgo的同位LiNbO/ sub3 /。所有掺mgo的LiNbO/ sub3 /晶体的生长温度都高于纯晶体。测量了频率相关的介电谱，研究了弛豫和传导机理。强低频色散表明掺mgo的LiNbO/sub 3/的主要导电机制是载流子跳变，这种跳变可能是由缺陷或mg离子引起的。阻抗谱测量结果表明，该系统不满足德拜定律，而满足琼舍尔“普遍定律”。

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Frequency response of MgO:LiNbO/sub 3/ crystals

MgO-doped congruent LiNbO/sub 3/ were grown by the Czochralski method. All MgO-doped LiNbO/sub 3/ crystals have a higher growing temperature than that of pure crystals. The frequency dependent dielectric spectra was measured to study the relaxational and conduction mechanism. Strong low frequency dispersion indicated that the main conduction mechanism of MgO-doped LiNbO/sub 3/ is by charge carrier hopping which may be caused by defects or Mg-ions. Impedance spectra measurement show that this system does not satisfy a Debye law but Jonscher's "universal law".

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Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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