Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy
Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites wer...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Oliveira, R. G. M. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Anmerkung: |
© Springer Science+Business Media, LLC, part of Springer Nature 2018 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of materials science / Materials in electronics - Springer US, 1990, 29(2018), 19 vom: 24. Juli, Seite 16248-16258 |
|---|---|
| Übergeordnetes Werk: |
volume:29 ; year:2018 ; number:19 ; day:24 ; month:07 ; pages:16248-16258 |
| Links: |
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| DOI / URN: |
10.1007/s10854-018-9714-8 |
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OLC2026355444 |
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| 520 | |a Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. | ||
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10.1007/s10854-018-9714-8 doi (DE-627)OLC2026355444 (DE-He213)s10854-018-9714-8-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Oliveira, R. G. M. verfasserin (orcid)0000-0003-4419-9245 aut Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy 2018 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. Freitas, D. B. aut Batista, G. S. aut de Morais, J. E. V. aut Martins, V. C. aut Costa, M. M. aut Silva, M. A. S. aut Gouvêa, D. X. aut Singh, C. aut Sombra, A. S. B. aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 29(2018), 19 vom: 24. Juli, Seite 16248-16258 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:29 year:2018 number:19 day:24 month:07 pages:16248-16258 https://doi.org/10.1007/s10854-018-9714-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2015 AR 29 2018 19 24 07 16248-16258 |
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10.1007/s10854-018-9714-8 doi (DE-627)OLC2026355444 (DE-He213)s10854-018-9714-8-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Oliveira, R. G. M. verfasserin (orcid)0000-0003-4419-9245 aut Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy 2018 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. Freitas, D. B. aut Batista, G. S. aut de Morais, J. E. V. aut Martins, V. C. aut Costa, M. M. aut Silva, M. A. S. aut Gouvêa, D. X. aut Singh, C. aut Sombra, A. S. B. aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 29(2018), 19 vom: 24. Juli, Seite 16248-16258 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:29 year:2018 number:19 day:24 month:07 pages:16248-16258 https://doi.org/10.1007/s10854-018-9714-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2015 AR 29 2018 19 24 07 16248-16258 |
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10.1007/s10854-018-9714-8 doi (DE-627)OLC2026355444 (DE-He213)s10854-018-9714-8-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Oliveira, R. G. M. verfasserin (orcid)0000-0003-4419-9245 aut Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy 2018 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. Freitas, D. B. aut Batista, G. S. aut de Morais, J. E. V. aut Martins, V. C. aut Costa, M. M. aut Silva, M. A. S. aut Gouvêa, D. X. aut Singh, C. aut Sombra, A. S. B. aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 29(2018), 19 vom: 24. Juli, Seite 16248-16258 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:29 year:2018 number:19 day:24 month:07 pages:16248-16258 https://doi.org/10.1007/s10854-018-9714-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2015 AR 29 2018 19 24 07 16248-16258 |
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10.1007/s10854-018-9714-8 doi (DE-627)OLC2026355444 (DE-He213)s10854-018-9714-8-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Oliveira, R. G. M. verfasserin (orcid)0000-0003-4419-9245 aut Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy 2018 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. Freitas, D. B. aut Batista, G. S. aut de Morais, J. E. V. aut Martins, V. C. aut Costa, M. M. aut Silva, M. A. S. aut Gouvêa, D. X. aut Singh, C. aut Sombra, A. S. B. aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 29(2018), 19 vom: 24. Juli, Seite 16248-16258 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:29 year:2018 number:19 day:24 month:07 pages:16248-16258 https://doi.org/10.1007/s10854-018-9714-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2015 AR 29 2018 19 24 07 16248-16258 |
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10.1007/s10854-018-9714-8 doi (DE-627)OLC2026355444 (DE-He213)s10854-018-9714-8-p DE-627 ger DE-627 rakwb eng 600 670 620 VZ Oliveira, R. G. M. verfasserin (orcid)0000-0003-4419-9245 aut Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy 2018 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. Freitas, D. B. aut Batista, G. S. aut de Morais, J. E. V. aut Martins, V. C. aut Costa, M. M. aut Silva, M. A. S. aut Gouvêa, D. X. aut Singh, C. aut Sombra, A. S. B. aut Enthalten in Journal of materials science / Materials in electronics Springer US, 1990 29(2018), 19 vom: 24. Juli, Seite 16248-16258 (DE-627)130863289 (DE-600)1030929-9 (DE-576)023106719 0957-4522 nnns volume:29 year:2018 number:19 day:24 month:07 pages:16248-16258 https://doi.org/10.1007/s10854-018-9714-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2015 AR 29 2018 19 24 07 16248-16258 |
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Oliveira, R. G. M. ddc 600 Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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600 670 620 VZ Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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Oliveira, R. G. M. Freitas, D. B. Batista, G. S. de Morais, J. E. V. Martins, V. C. Costa, M. M. Silva, M. A. S. Gouvêa, D. X. Singh, C. Sombra, A. S. B. |
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Oliveira, R. G. M. |
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dielectrical and structural studies of composite matrix $ bivo_{4} $–$ catio_{3} $ and temperature effects by impedance spectroscopy |
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Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. © Springer Science+Business Media, LLC, part of Springer Nature 2018 |
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Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. © Springer Science+Business Media, LLC, part of Springer Nature 2018 |
| abstract_unstemmed |
Abstract In this work, we have analysed the effects of adding $ CaTiO_{3} $ (CTO) and changing the temperature on the dielectric and electric properties of ceramic matrix $ BiVO_{4} $ (BVO) in the radiofrequency range. BVO was synthesized by a calcination process at 500 °C and ceramic composites were prepared by the addition of CTO (8, 16, 24, 28 and 32 wt%). These composites were moulded in ceramic pellets and sintered at 800 °C. The crystal structures of BVO and composites were analysed by X-ray diffraction and no spurious phase was detected in the synthesized BVO. Complex impedance spectroscopy observed the presence of a thermo-activated charge transfer process with activation energy increasing with CTO concentration in the samples. The dielectric constant (ε) measured in radio frequency for ceramic composites presented high values that ranged from 26 to 9 k for BVO to BV32, respectively, at room temperature and a frequency of 1 Hz. The electrical response obtained by composites were fitted through an equivalent circuit composed of three associations in parallel with the resistance of a constant phase element, which showed minor deviations between the fitted and experimental data. The temperature coefficient of capacitance displayed negative and positive values in CTO-based composites and pure BVO, respectively; these characteristics are favourable for the application of composites in the radio frequency band. © Springer Science+Business Media, LLC, part of Springer Nature 2018 |
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Dielectrical and structural studies of composite matrix $ BiVO_{4} $–$ CaTiO_{3} $ and temperature effects by impedance spectroscopy |
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Freitas, D. B. Batista, G. S. de Morais, J. E. V. Martins, V. C. Costa, M. M. Silva, M. A. S. Gouvêa, D. X. Singh, C. Sombra, A. S. B. |
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