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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Complex permittivity measurements of ferroelectrics employing composite dielectric resonator technique
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Complex permittivity measurements of ferroelectrics employing composite dielectric resonator technique

机译：使用复合介电共振器技术测量铁电体的复介电常数

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摘要

Composite cylindrical TE0n1 mode dielectric resonator has been used for the complex permittivity measurements of ferroelectrics at frequency about 8.8 GHz. Rigorous equations have been derived that allowed us to find a relationship between measured resonance frequency and Q-factor and the complex permittivity. It has been shown that the choice of appropriate diameter of a sample together with rigorous complex angular frequency analysis allows precise measurements of various ferroelectric. Proposed technique can be used for materials having both real and imaginary part of permittivity as large as a few thousand. Variable temperature measurements were performed on a PbMg1/3Nb2/3O3 (PMN) ceramic sample, and the measured complex permittivity have shown good agreement with the results of measurements obtained on the same sample at lower frequencies (0.1 1.8 GHz)
机译：复合圆柱TE0n1模式介电谐振器已用于在约8.8 GHz频率下铁电体的复介电常数测量。导出了严格的方程，使我们能够找到测得的共振频率和Q因子与复介电常数之间的关系。已经表明，选择合适的样品直径以及严格的复杂角频率分析可以精确测量各种铁电体。提议的技术可以用于介电常数的实部和虚部都大至数千的材料。在PbMg1 / 3Nb2 / 3O3（PMN）陶瓷样品上进行了可变温度测量，测量的复介电常数与在较低频率（0.1 1.8 GHz）上对同一样品获得的测量结果显示出良好的一致性。

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