Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices
A thermodynamic model based on the Landau-Ginzburg theory is developed to study the polarization and hysteresis loop behaviors in ferroelectric superlattices with technologically important BaxSr1-xTiO3 (BST) solid solutions. Our study shows that the polarization, coercive field, and hysteresis loop...
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| Format: | Article |
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AIP Publishing
2018
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| author | Lim, Kok Geng Chew, Khian Hooi |
| author_facet | Lim, Kok Geng Chew, Khian Hooi |
| author_sort | Lim, Kok Geng |
| collection | UM |
| description | A thermodynamic model based on the Landau-Ginzburg theory is developed to study the polarization and hysteresis loop behaviors in ferroelectric superlattices with technologically important BaxSr1-xTiO3 (BST) solid solutions. Our study shows that the polarization, coercive field, and hysteresis loop behaviors can be tailored by changing the thickness ratio and the Ba/Sr content of BST. The study also found that the sign of the internal fields depends sensitively on both thickness ratio and Ba/Sr content of BST. Both results imply that the internal electric field of superlattice can be tuned to yield zero polarizing or depolarizing field via manipulation of thickness ratio and composition. These findings could pave the way to enhance the efficiency of ferroelectric photovoltaic devices by manipulating the internal electric field through thickness and composition. |
| first_indexed | 2024-03-06T05:54:11Z |
| format | Article |
| id | um.eprints-21447 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:54:11Z |
| publishDate | 2018 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | um.eprints-214472019-05-31T04:01:52Z http://eprints.um.edu.my/21447/ Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices Lim, Kok Geng Chew, Khian Hooi Q Science (General) QC Physics A thermodynamic model based on the Landau-Ginzburg theory is developed to study the polarization and hysteresis loop behaviors in ferroelectric superlattices with technologically important BaxSr1-xTiO3 (BST) solid solutions. Our study shows that the polarization, coercive field, and hysteresis loop behaviors can be tailored by changing the thickness ratio and the Ba/Sr content of BST. The study also found that the sign of the internal fields depends sensitively on both thickness ratio and Ba/Sr content of BST. Both results imply that the internal electric field of superlattice can be tuned to yield zero polarizing or depolarizing field via manipulation of thickness ratio and composition. These findings could pave the way to enhance the efficiency of ferroelectric photovoltaic devices by manipulating the internal electric field through thickness and composition. AIP Publishing 2018 Article PeerReviewed Lim, Kok Geng and Chew, Khian Hooi (2018) Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices. Journal of Applied Physics, 123 (10). p. 104101. ISSN 0021-8979, DOI https://doi.org/10.1063/1.5012130 <https://doi.org/10.1063/1.5012130>. https://doi.org/10.1063/1.5012130 doi:10.1063/1.5012130 |
| spellingShingle | Q Science (General) QC Physics Lim, Kok Geng Chew, Khian Hooi Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title | Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title_full | Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title_fullStr | Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title_full_unstemmed | Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title_short | Tuning of polarization, internal electric field, and hysteresis loop behaviours in BaTiO3/BaxSr1-xTiO3 superlattices |
| title_sort | tuning of polarization internal electric field and hysteresis loop behaviours in batio3 baxsr1 xtio3 superlattices |
| topic | Q Science (General) QC Physics |
| work_keys_str_mv | AT limkokgeng tuningofpolarizationinternalelectricfieldandhysteresisloopbehavioursinbatio3baxsr1xtio3superlattices AT chewkhianhooi tuningofpolarizationinternalelectricfieldandhysteresisloopbehavioursinbatio3baxsr1xtio3superlattices |