Reducing Loss Tangent by Controlling Microstructure and Electrical Responses in CaCu 3 Ti 4 O 12 Ceramics Prepared by a Simple Combustion Method
Source abstract
Abstract
The dielectric and electrical properties of CaCu 3 Ti 4 O 12 ceramics prepared by a simple combustion method were investigated. Fine‐grained CaCu 3 Ti 4 O 12 ceramics exhibited good dielectric properties and temperature stability. Very low loss tangents of 0.020–0.016 and high dielectric constant of 5776–6406 (at 1 kHz and 20°C) with temperature coefficient less than ±15% in the temperature range of −70 to 90°C were observed. Dielectric relaxation processes were observed in large‐grained CaCu 3 Ti 4 O 12 ceramics. The dielectric relaxation in the temperature range of 60–150°C may be associated with sample–electrode contact. The relaxation in temperatures below −40°C is related to the electrical response at grain boundaries.
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Research context
OpenAlex topics: Dielectric properties of ceramics · Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand
National Metal and Materials Technology Center (MTEC) Thailand Science Park Pathumthani 12120 Thailand
School of Physics Institute of Science Suranaree University Nakhon Ratchasima 30000 Thailand
Sustainable Infrastructure Research and Development Center Department of Civil Engineering, Faculty of Engineering Khon Kaen University Khon Kaen 40002 Thailand
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