Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant
This paper reports the dielectric characterizations of (Ca<sub>0.95</sub>Sr<sub>0.05</sub>)(Ti<sub>1−x</sub>Sn<sub>x</sub>)O<sub>3</sub> ceramics prepared using a solid-state reaction method with various x values. X-ray diffraction spectros...
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MDPI AG
2024-09-01
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| author | Yuan-Bin Chen Yu Fan Shiuan-Ho Chang Shaobing Shen |
| author_facet | Yuan-Bin Chen Yu Fan Shiuan-Ho Chang Shaobing Shen |
| author_sort | Yuan-Bin Chen |
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| description | This paper reports the dielectric characterizations of (Ca<sub>0.95</sub>Sr<sub>0.05</sub>)(Ti<sub>1−x</sub>Sn<sub>x</sub>)O<sub>3</sub> ceramics prepared using a solid-state reaction method with various x values. X-ray diffraction spectroscopy analyses showed that the crystal structure of these pure samples was orthorhombic perovskite. With increasing Sn<sup>4+</sup> content, the lattice constant and unit cell volume increased, while the dielectric constant decreased because of the ionic polarizability decreasing. Moreover, a maximum Q × f value of 5242 (GHz), a dielectric constant (ε<sub>r</sub>) of 91.23, and a temperature coefficient (τ<sub>f</sub>) of +810 ppm/°C were achieved for samples sintered at 1350 °C for 4 h. The microwave dielectric characterization was found to be strongly correlated with the sintering temperature, and the best performance was achieved for the sample sintered at 1350 °C. (Ca<sub>0.95</sub>Sr<sub>0.05</sub>)(Ti<sub>1−x</sub>Sn<sub>x</sub>)O<sub>3</sub> possesses a promising potential to be a τ<sub>f</sub> compensator for a near-zero τ<sub>f</sub> dielectric ceramic applied in wireless communication systems. |
| format | Article |
| id | doaj-art-f8b2dd7fca274b3b8b76c54801a88dbb |
| institution | OA Journals |
| issn | 2571-6131 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
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| series | Ceramics |
| spelling | doaj-art-f8b2dd7fca274b3b8b76c54801a88dbb2025-08-20T01:55:22ZengMDPI AGCeramics2571-61312024-09-01731227123610.3390/ceramics7030081Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric ConstantYuan-Bin Chen0Yu Fan1Shiuan-Ho Chang2Shaobing Shen3School of Electronics and Electrical Engineering, Zhaoqing University, Zhaoqing 526061, ChinaSchool of Electronics and Electrical Engineering, Zhaoqing University, Zhaoqing 526061, ChinaSchool of Electronics and Electrical Engineering, Zhaoqing University, Zhaoqing 526061, ChinaSchool of Electronics and Electrical Engineering, Zhaoqing University, Zhaoqing 526061, ChinaThis paper reports the dielectric characterizations of (Ca<sub>0.95</sub>Sr<sub>0.05</sub>)(Ti<sub>1−x</sub>Sn<sub>x</sub>)O<sub>3</sub> ceramics prepared using a solid-state reaction method with various x values. X-ray diffraction spectroscopy analyses showed that the crystal structure of these pure samples was orthorhombic perovskite. With increasing Sn<sup>4+</sup> content, the lattice constant and unit cell volume increased, while the dielectric constant decreased because of the ionic polarizability decreasing. Moreover, a maximum Q × f value of 5242 (GHz), a dielectric constant (ε<sub>r</sub>) of 91.23, and a temperature coefficient (τ<sub>f</sub>) of +810 ppm/°C were achieved for samples sintered at 1350 °C for 4 h. The microwave dielectric characterization was found to be strongly correlated with the sintering temperature, and the best performance was achieved for the sample sintered at 1350 °C. (Ca<sub>0.95</sub>Sr<sub>0.05</sub>)(Ti<sub>1−x</sub>Sn<sub>x</sub>)O<sub>3</sub> possesses a promising potential to be a τ<sub>f</sub> compensator for a near-zero τ<sub>f</sub> dielectric ceramic applied in wireless communication systems.https://www.mdpi.com/2571-6131/7/3/81Q × fmicrowave dielectricceramic |
| spellingShingle | Yuan-Bin Chen Yu Fan Shiuan-Ho Chang Shaobing Shen Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant Ceramics Q × f microwave dielectric ceramic |
| title | Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant |
| title_full | Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant |
| title_fullStr | Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant |
| title_full_unstemmed | Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant |
| title_short | Study on Microwave Dielectric Materials an Adjustable Temperature Drift Coefficient and a High Dielectric Constant |
| title_sort | study on microwave dielectric materials an adjustable temperature drift coefficient and a high dielectric constant |
| topic | Q × f microwave dielectric ceramic |
| url | https://www.mdpi.com/2571-6131/7/3/81 |
| work_keys_str_mv | AT yuanbinchen studyonmicrowavedielectricmaterialsanadjustabletemperaturedriftcoefficientandahighdielectricconstant AT yufan studyonmicrowavedielectricmaterialsanadjustabletemperaturedriftcoefficientandahighdielectricconstant AT shiuanhochang studyonmicrowavedielectricmaterialsanadjustabletemperaturedriftcoefficientandahighdielectricconstant AT shaobingshen studyonmicrowavedielectricmaterialsanadjustabletemperaturedriftcoefficientandahighdielectricconstant |