Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics
A solid–state reaction method was used to produce CaCu3-xMgxTi4O12-2xF2x with x values of 0, 0.05, and 0.10. A CaCu3Ti4O12 phase was detected in the absence of impurities. The (Mg2++F–) co–doping ions inhibited the grain growth of the CaCu3Ti4O12 ceramics because of the solute drag mechanism. The di...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-04-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21870764.2022.2067027 |
| _version_ | 1818162543865102336 |
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| author | Jutapol Jumpatam Jirata Prachamon Jakkree Boonlakhorn Nutthakritta Phromviyo Narong Chanlek Prasit Thongbai |
| author_facet | Jutapol Jumpatam Jirata Prachamon Jakkree Boonlakhorn Nutthakritta Phromviyo Narong Chanlek Prasit Thongbai |
| author_sort | Jutapol Jumpatam |
| collection | DOAJ |
| description | A solid–state reaction method was used to produce CaCu3-xMgxTi4O12-2xF2x with x values of 0, 0.05, and 0.10. A CaCu3Ti4O12 phase was detected in the absence of impurities. The (Mg2++F–) co–doping ions inhibited the grain growth of the CaCu3Ti4O12 ceramics because of the solute drag mechanism. The dielectric and non–Ohmic electrical properties of the CaCu3-xMgxTi4O12-2xF2x ceramics were studied. Intriguingly, the ceramic with x = 0.05 enhanced the dielectric properties with a considerably decreased loss tangent (tanδ~0.06) while retaining a high dielectric permittivity (>104) at 1 kHz. The nonlinear current density–electric field (J–E) properties of the ceramic with x = 0.05 were also successfully improved. However, the dielectric and nonlinear properties deteriorated when x = 0.10. The variations in the low–frequency tanδ and electric breakdown strength were primarily associated with the grain size and Schottky barrier height at the grain boundaries. The relevant mechanisms for these improved dielectric and non–Ohmic properties are discussed based on the effect of the internal barrier layer capacitor. |
| first_indexed | 2024-12-11T16:35:21Z |
| format | Article |
| id | doaj.art-a9d940ed3df349d1add8cdaf724aa739 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-11T16:35:21Z |
| publishDate | 2022-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-a9d940ed3df349d1add8cdaf724aa7392022-12-22T00:58:28ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642022-04-0110241442310.1080/21870764.2022.2067027Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramicsJutapol Jumpatam0Jirata Prachamon1Jakkree Boonlakhorn2Nutthakritta Phromviyo3Narong Chanlek4Prasit Thongbai5Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandGiant Dielectric and Computational Design Research Group (GD–CDR), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandGiant Dielectric and Computational Design Research Group (GD–CDR), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandResearch and Innovation, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandSynchrotron Light Research Institute (Public Organization), 111 University Avenue, Nakhon Ratchasima, ThailandGiant Dielectric and Computational Design Research Group (GD–CDR), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, ThailandA solid–state reaction method was used to produce CaCu3-xMgxTi4O12-2xF2x with x values of 0, 0.05, and 0.10. A CaCu3Ti4O12 phase was detected in the absence of impurities. The (Mg2++F–) co–doping ions inhibited the grain growth of the CaCu3Ti4O12 ceramics because of the solute drag mechanism. The dielectric and non–Ohmic electrical properties of the CaCu3-xMgxTi4O12-2xF2x ceramics were studied. Intriguingly, the ceramic with x = 0.05 enhanced the dielectric properties with a considerably decreased loss tangent (tanδ~0.06) while retaining a high dielectric permittivity (>104) at 1 kHz. The nonlinear current density–electric field (J–E) properties of the ceramic with x = 0.05 were also successfully improved. However, the dielectric and nonlinear properties deteriorated when x = 0.10. The variations in the low–frequency tanδ and electric breakdown strength were primarily associated with the grain size and Schottky barrier height at the grain boundaries. The relevant mechanisms for these improved dielectric and non–Ohmic properties are discussed based on the effect of the internal barrier layer capacitor.https://www.tandfonline.com/doi/10.1080/21870764.2022.2067027CaCu3Ti4O12loss tangentdielectric constantimpedance spectroscopyelectrical properties |
| spellingShingle | Jutapol Jumpatam Jirata Prachamon Jakkree Boonlakhorn Nutthakritta Phromviyo Narong Chanlek Prasit Thongbai Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics Journal of Asian Ceramic Societies CaCu3Ti4O12 loss tangent dielectric constant impedance spectroscopy electrical properties |
| title | Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics |
| title_full | Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics |
| title_fullStr | Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics |
| title_full_unstemmed | Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics |
| title_short | Giant dielectric behavior and non-ohmic properties in Mg2++F− co-doped CaCu3Ti4O12 ceramics |
| title_sort | giant dielectric behavior and non ohmic properties in mg2 f co doped cacu3ti4o12 ceramics |
| topic | CaCu3Ti4O12 loss tangent dielectric constant impedance spectroscopy electrical properties |
| url | https://www.tandfonline.com/doi/10.1080/21870764.2022.2067027 |
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