Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system
The correlation between structure and dielectric properties of lead-free (1-x)Na0.5Bi0.5TiO3 - xCaTiO3 ((1-x)NBT - xCT) polycrystalline ceramics was investigated systematically by X-ray diffraction, combined with impedance spectroscopy for dielectric characterizations. The system shows high miscibil...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , , |
| التنسيق: | article |
| منشور في: |
2019
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/11404 https://doi.org/10.1016/j.ceramint.2018.11.126 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0272884218332437#keys0005 |
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| _version_ | 1864513488727048192 |
|---|---|
| author | Roukos, Roy |
| author2 | Abou Dargham, Sara Romanos, Jimmy Barakat, Fatima Chaumont, Denis |
| author2_role | author author author author |
| author_facet | Roukos, Roy Abou Dargham, Sara Romanos, Jimmy Barakat, Fatima Chaumont, Denis |
| author_role | author |
| dc.creator.none.fl_str_mv | Roukos, Roy Abou Dargham, Sara Romanos, Jimmy Barakat, Fatima Chaumont, Denis |
| dc.date.none.fl_str_mv | 2019-10-10T08:22:50Z 2019-10-10T08:22:50Z 2019 2019-10-10 |
| dc.identifier.none.fl_str_mv | 1873-3956 http://hdl.handle.net/10725/11404 https://doi.org/10.1016/j.ceramint.2018.11.126 Roukos, R., Dargham, S. A., Romanos, J., Barakat, F., & Chaumont, D. (2019). Complex structural contribution of the morphotropic phase boundary in Na0. 5Bi0. 5TiO3-CaTiO3 system. Ceramics International, 45(4), 4467-4473. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0272884218332437#keys0005 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Ceramics International |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The correlation between structure and dielectric properties of lead-free (1-x)Na0.5Bi0.5TiO3 - xCaTiO3 ((1-x)NBT - xCT) polycrystalline ceramics was investigated systematically by X-ray diffraction, combined with impedance spectroscopy for dielectric characterizations. The system shows high miscibility in the entire composition range. A morphotropic phase boundary (MPB), at 0.09 ≤ x < 0.15 was identified where rhombohedral and orthorhombic symmetries coexist at room temperature. The fraction of orthorhombic phase increases gradually with x in the MPB region. Dielectric measurements reveal that the relative permittivity increase with addition of Ca2+. This behavior is unusual with this kind of doping. A thermal hysteresis occurred only in the MPB composition which varies in a non-monotonically manner with x, detected by dielectric properties. This phenomenon is related to the crystalline microstructure by a linear relationship between the fraction of each phase and dielectric properties, and, more precisely, to the strong interaction between rhombohedral and orthorhombic phases. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_93831fb22a2b6e1a2e6e55d64151b9f4 |
| identifier_str_mv | 1873-3956 Roukos, R., Dargham, S. A., Romanos, J., Barakat, F., & Chaumont, D. (2019). Complex structural contribution of the morphotropic phase boundary in Na0. 5Bi0. 5TiO3-CaTiO3 system. Ceramics International, 45(4), 4467-4473. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/11404 |
| publishDate | 2019 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 systemRoukos, RoyAbou Dargham, SaraRomanos, JimmyBarakat, FatimaChaumont, DenisThe correlation between structure and dielectric properties of lead-free (1-x)Na0.5Bi0.5TiO3 - xCaTiO3 ((1-x)NBT - xCT) polycrystalline ceramics was investigated systematically by X-ray diffraction, combined with impedance spectroscopy for dielectric characterizations. The system shows high miscibility in the entire composition range. A morphotropic phase boundary (MPB), at 0.09 ≤ x < 0.15 was identified where rhombohedral and orthorhombic symmetries coexist at room temperature. The fraction of orthorhombic phase increases gradually with x in the MPB region. Dielectric measurements reveal that the relative permittivity increase with addition of Ca2+. This behavior is unusual with this kind of doping. A thermal hysteresis occurred only in the MPB composition which varies in a non-monotonically manner with x, detected by dielectric properties. This phenomenon is related to the crystalline microstructure by a linear relationship between the fraction of each phase and dielectric properties, and, more precisely, to the strong interaction between rhombohedral and orthorhombic phases.PublishedN/A2019-10-10T08:22:50Z2019-10-10T08:22:50Z20192019-10-10Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1873-3956http://hdl.handle.net/10725/11404https://doi.org/10.1016/j.ceramint.2018.11.126Roukos, R., Dargham, S. A., Romanos, J., Barakat, F., & Chaumont, D. (2019). Complex structural contribution of the morphotropic phase boundary in Na0. 5Bi0. 5TiO3-CaTiO3 system. Ceramics International, 45(4), 4467-4473.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://www.sciencedirect.com/science/article/pii/S0272884218332437#keys0005enCeramics Internationalinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/114042021-03-19T10:47:37Z |
| spellingShingle | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system Roukos, Roy |
| status_str | publishedVersion |
| title | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| title_full | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| title_fullStr | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| title_full_unstemmed | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| title_short | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| title_sort | Complex structural contribution of the morphotropic phase boundary in Na0.5Bi0.5TiO3 - CaTiO3 system |
| url | http://hdl.handle.net/10725/11404 https://doi.org/10.1016/j.ceramint.2018.11.126 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S0272884218332437#keys0005 |