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A Novel Route to Greatly Enhanced Dielectric Permittivity with Reduce Loss Tangent in CaCu 3− x Zn x Ti 4 O 12 / CaTiO 3 Composites
Author(s) -
Jumpatam Jutapol,
Putasaeng Bundit,
Yamwong Teerapon,
Thongbai Prasit,
Maensiri Santi
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13048
Subject(s) - permittivity , dielectric , doping , materials science , dissipation factor , dielectric permittivity , nonlinear system , relative permittivity , dielectric loss , analytical chemistry (journal) , mineralogy , chemistry , optoelectronics , chromatography , physics , quantum mechanics
Dielectric and nonlinear properties of a binary compound derived from Ca 2 Cu 2 Ti 4 O 12 were greatly improved by doping with Zn 2+ to deliberately create CaCu 3 –x Zn x Ti 4 O 12 / CaTiO 3 composites. Ca 2 Cu 1.8 Zn 0.2 Ti 4 O 12 composition can exhibit an enhanced ε′, ~6,513, with a strong reduction in tanδ to ~0.015 (at 1 kHz). The nonlinear coefficient and breakdown field strength were significantly enhanced. The dielectric and nonlinear properties were described based on the effect of Zn 2+ substitution on electrical response of internal interfaces.