Relaxor behavior in multiferroic BiMn2 O5
In polycrystalline BiMn2 O5 a broad thermal stimulated depolarization current (TSDC) curve has been observed in the range from 10 K to 300 K and the pyroelectric coefficient determined. In magnetic susceptibility measurements reported in the literature, features appearing in the pyroelectric coeffic...
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| Format: | Online |
| Language: | Portuguese |
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Universidade Estadual de Campinas
2020
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| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3246 |
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| _version_ | 1864358292771307520 |
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| author | Fier , Igor |
| author_facet | Fier , Igor |
| author_sort | Fier , Igor |
| collection | Portal de Eventos Científicos da UNICAMP |
| container_reference | Physicae Proceedings; Vol. 1 No. 1 (2012): Proceedings XI Young Researchers Meeting ; 1-1 |
| description | In polycrystalline BiMn2 O5 a broad thermal stimulated depolarization current (TSDC) curve has been observed in the range from 10 K to 300 K and the pyroelectric coefficient determined. In magnetic susceptibility measurements reported in the literature, features appearing in the pyroelectric coefficient could also be identified for the same temperatures, suggesting a connection between electric and magnetic data above the Néel temperature. A detailed study of the dielectric constant from 240 K to 700 K for an extended range of frequencies revealed a broad maximum at low frequencies, characteristic of relaxor ferroelectrics, following Vogel-Fulcher relation. A freezing temperature of the polar nanoregions Tf = 512 K has been determined. This high temperature ferroelectric behavior is attributed to the Bi3+ in the distorted BiO8 cage. |
| first_indexed | 2025-10-08T13:49:17Z |
| format | Online |
| id | ojs-article-3246 |
| institution | Universidade Estadual de Campinas |
| issn | 2236-7535 |
| language | por |
| last_indexed | 2025-10-08T13:49:17Z |
| publishDate | 2020 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-32462020-05-15T15:30:07Z Relaxor behavior in multiferroic BiMn2 O5 Fier , Igor Thermal stimulated depolarization current Physics In polycrystalline BiMn2 O5 a broad thermal stimulated depolarization current (TSDC) curve has been observed in the range from 10 K to 300 K and the pyroelectric coefficient determined. In magnetic susceptibility measurements reported in the literature, features appearing in the pyroelectric coefficient could also be identified for the same temperatures, suggesting a connection between electric and magnetic data above the Néel temperature. A detailed study of the dielectric constant from 240 K to 700 K for an extended range of frequencies revealed a broad maximum at low frequencies, characteristic of relaxor ferroelectrics, following Vogel-Fulcher relation. A freezing temperature of the polar nanoregions Tf = 512 K has been determined. This high temperature ferroelectric behavior is attributed to the Bi3+ in the distorted BiO8 cage. Universidade Estadual de Campinas 2020-05-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3246 Physicae Proceedings; Vol. 1 No. 1 (2012): Proceedings XI Young Researchers Meeting ; 1-1 Physicae Proceedings; v. 1 n. 1 (2012): Proceedings XI Young Researchers Meeting ; 1-1 2236-7535 por https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3246/3182 Copyright (c) 2012 Physicae |
| spellingShingle | Fier , Igor Thermal stimulated depolarization current Physics Relaxor behavior in multiferroic BiMn2 O5 |
| title | Relaxor behavior in multiferroic BiMn2 O5 |
| title_full | Relaxor behavior in multiferroic BiMn2 O5 |
| title_fullStr | Relaxor behavior in multiferroic BiMn2 O5 |
| title_full_unstemmed | Relaxor behavior in multiferroic BiMn2 O5 |
| title_short | Relaxor behavior in multiferroic BiMn2 O5 |
| title_sort | relaxor behavior in multiferroic bimn2 o5 |
| topic | Thermal stimulated depolarization current Physics |
| url | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3246 |
| work_keys_str_mv | AT fierigor relaxorbehaviorinmultiferroicbimn2o5 |
