Microwave heating behavior and microwave absorption properties of barium titanate at high temperatures
Source abstract
Abstract
The temperature dependence of the microwave absorption behavior of BaTiO3 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 BaTiO3 (εr′ and εr″, 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 BaTiO3 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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Research context
OpenAlex topics: Microwave-Assisted Synthesis and Applications · Microwave and Dielectric Measurement Techniques · Microwave Engineering and Waveguides
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Affiliations
Chubu University 1 , Matsumotocho 1200, Kasugai-shi, Aichi 487-8501, Japan
Tokyo Institute of Technology 2 Department of Metallurgy and Ceramics Science, , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Kyoto University 3 Research Institute for Sustainable Humanosphere, , Gokasho, Uji-shi, Kyoto 611-0011, Japan
References (15)
Show source-provided references
1. Effect of microwave heating on BaTiO3:Nb ceramics with positive temperature coefficient of resistivity10.1063/1.371014 ↗
2. Synthesis of Tetragonal BaTiO3 by Microwave Heating and Conventional Heating10.1021/cm970371n ↗
3. Synthesis of BaTiO3 powder from barium titanyl oxalate (BTO) precursor employing microwave heating technique10.1007/BF02708508 ↗
4. Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium Titanate10.1021/jp7112818 ↗
5. Journal of Materials Research · 2005 · 20 · 1810.1557/JMR.2005.0012 ↗
6. ISIJ International · 2010 · 50 · 159010.2355/isijinternational.50.1590 ↗
7. Complex Permittivity and Permeability of SiO2 and Fe3O4 Powders in Microwave Frequency Range between 0.2 and 13.5 GHz10.2355/isijinternational.49.1443 ↗
8. Temperature Dependence and Shape Effect in High-Temperature Microwave Heating of Nickel Oxide Powders10.1016/j.physb.2014.11.003 ↗
9. In-Situ Kinetic Study on Non-Thermal Reduction Reaction of CuO during Microwave Heating10.1016/j.matlet.2012.09.114 ↗
10. Quasi-Stable Temperature of Steady State of Hematite by Microwave Heating10.1016/j.cep.2013.12.001 ↗
11. Metal Ti-Cr Alloy Powders Nitriding under Atmospheric Pressure by Microwave Heating10.1016/j.jallcom.2012.09.117 ↗
12. 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.
13. Alkoxide Precursor Synthesis and Characterization of Phases in the Barium-Titanium Oxide System10.1111/j.1151-2916.1986.tb04721.x ↗
14. Temperature Dependence and Shape Effect in High-Temperature Microwave Heating of Nickel Oxide Powders10.1016/j.physb.2014.11.003 ↗
15. Surface-Plasmon-Like Modes of Graphite Powder Compact in Microwave Heating10.1063/1.4745871 ↗