A Novel Route to Greatly Enhanced Dielectric Permittivity with Reduce Loss Tangent in CaCu3−xZnxTi4O12/CaTiO3 Composites |
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| Authors: | Jutapol Jumpatam Bundit Putasaeng Teerapon Yamwong Prasit Thongbai Santi Maensiri |
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| Affiliation: | 1. Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, , Khon Kaen, 40002 Thailand;2. National Metal and Materials Technology Center (MTEC), Thailand Science Park, , Pathumthani, 12120 Thailand;3. Department of Physics, Faculty of Science, Khon Kaen University, , Khon Kaen, 40002 Thailand;4. Nanotec‐KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, , Khon Kaen, 40002 Thailand;5. School of Physics, Institute of Science, Suranaree University, , Nakhon Ratchasima, 30000 Thailand |
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| Abstract: | Dielectric and nonlinear properties of a binary compound derived from Ca2Cu2Ti4O12 were greatly improved by doping with Zn2+ to deliberately create CaCu3–xZnxTi4O12/CaTiO3 composites. Ca2Cu1.8Zn0.2Ti4O12 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 Zn2+ substitution on electrical response of internal interfaces. |
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