用复合介质谐振器对块状铁电体和弛豫体进行微波表征

2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI:10.1109/MSMW.2007.4294817

S. Veljko, V. Bovtun, J. Krupka, D. Nuzhnyy, V. Borisov, S. Kamba, J. Petzelt

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引用次数: 0

摘要

提出并建立了一种基于复合圆柱形介质谐振器(DR)的铁电体和弛豫器微波范围介电常数和损耗表征方法。研究了复合DR的TE011模式和TE021模式的共振频率和q因子对不同介电常数样品介电损耗的影响。测量了粗晶和细晶铁电陶瓷Ba0.6Sr0.4TiO3和弛豫陶瓷PMN和Ba2La0.5Nd0.5Ti2Nb3O15在高频和微波下介电常数和损耗的温度依赖性。

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Microwave Characterization of Bulk Ferroelectrics and Relaxors using Composite Dielectric Resonator

A method based on a composite cylindrical dielectric resonator (DR) to characterize the dielectric permittivity and losses in the microwave range of a ferroelectrics and relaxors is developed and set up. Resonance frequencies and Q-factors of the TE₀₁₁ mode and TE₀₂₁ mode of the composite DR versus dielectric loss of the sample with different permittivity is studied. Temperature dependences of the dielectric permittivity and loss of ferroelectric Ba_0.6Sr_0.4TiO₃ ceramics with coarse and fine grains and of relaxor ceramics PMN and Ba₂La_0.5Nd_0.5Ti₂Nb₃O₁₅ at high frequencies and microwaves are measured.

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2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)

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