Reducing Loss Tangent by Controlling Microstructure and Electrical Responses in CaCu 3 Ti 4 O 12  Ceramics Prepared by a Simple Combustion Method | Zendy

Thongbai Prasit | Zendy; Pinitsoontorn Supree | Zendy; Amornkitbamrung Vittaya | Zendy; Yamwong Teerapon | Zendy; Maensiri Santi | Zendy; Chindaprasirt Prinya | Zendy

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Reducing Loss Tangent by Controlling Microstructure and Electrical Responses in CaCu 3 Ti 4 O 12 Ceramics Prepared by a Simple Combustion Method

Author(s) -

Thongbai Prasit,

Pinitsoontorn Supree,

Amornkitbamrung Vittaya,

Yamwong Teerapon,

Maensiri Santi,

Chindaprasirt Prinya

Publication year - 2013

Publication title -

international journal of applied ceramic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 57

eISSN - 1744-7402

pISSN - 1546-542X

DOI - 10.1111/ijac.12021

Subject(s) - materials science , dielectric , ceramic , dissipation factor , microstructure , temperature coefficient , relaxation (psychology) , atmospheric temperature range , composite material , combustion , electrode , dielectric loss , analytical chemistry (journal) , mineralogy , thermodynamics , optoelectronics , chemistry , psychology , social psychology , physics , chromatography

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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