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/content/aip/journal/adva/6/6/10.1063/1.4953325
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See supplementary material at http://dx.doi.org/10.1063/1.4953325 for particle size distribution before and after laser scattering, and X-ray diffraction spectra of BT4 before and after the measurements. We should emphasize that this estimation includes an error bar from decision of strength of electrical field (E [V/m]). The electrical field around sample powders were sensitive to microwave oscillator, sample states, slit width and adjustments of cavity. E = 5 × 103 V m−1 are thought to be reasonable considering the results of simulation but the simulation can not follow both the adjustment of cavity and sample states. Third method of electrical permittivity at high temperature need to be developed for decision of the validity of measurements.[Supplementary Material]
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http://aip.metastore.ingenta.com/content/aip/journal/adva/6/6/10.1063/1.4953325
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/content/aip/journal/adva/6/6/10.1063/1.4953325
2016-06-01
2016-12-08

Abstract

The temperature dependence of the microwave absorption behavior of BaTiO particles was investigated over various frequencies and temperatures of 25-1000 C. First, using both the coaxial transmission line method and the cavity perturbation method by a network analyzer, the real and imaginary parts of the relative permittivity of BaTiO ( and , respectively) were measured, in order to improve the reliability of the data obtained at 2.45 GHz. The imaginary parts of the relative permittivity as measured by the two methods were explored by their heating behaviors. Furthermore, the temperature dependence of the microwave absorption behavior of BaTiO particles was investigated for frequencies of 2.0-13.5 GHz and temperatures of 25-1000 C using the coaxial transmission line method.

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