Mostrar el registro sencillo del ítem
Enhanced electrical properties and large electrocaloric effect in lead-free Ba0.8Ca0.2ZrxTi1−xO3 (x = 0 and 0.02) ceramics
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | MERSELMIZ, Soukaina | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | HANANI, Zouhair | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | BEN MOUMEN, Said | |
hal.structure.identifier | Jozef Stefan Institute [Ljubljana] [IJS] | |
dc.contributor.author | MATAVŽ, Aleksander | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | MEZZANE, Daoud | |
hal.structure.identifier | Jozef Stefan Institute [Ljubljana] [IJS] | |
dc.contributor.author | NOVAK, Nikola | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | ABKHAR, Zahra | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | HAJJI, Lahoucine | |
hal.structure.identifier | Université Cadi Ayyad [Marrakech] [UCA] | |
dc.contributor.author | AMJOUD, M’barek | |
hal.structure.identifier | Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 [LPMC] | |
dc.contributor.author | GAGOU, Yaovi | |
hal.structure.identifier | Institut des Matériaux, de Microélectronique et des Nanosciences de Provence [IM2NP] | |
dc.contributor.author | HOUMMADA, Khalid | |
hal.structure.identifier | Jozef Stefan Institute [Ljubljana] [IJS] | |
dc.contributor.author | ČREŠNAR, Dejvid | |
hal.structure.identifier | Jozef Stefan Institute [Ljubljana] [IJS] | |
dc.contributor.author | KUTNJAK, Zdravko | |
hal.structure.identifier | Jozef Stefan Institute [Ljubljana] [IJS] | |
dc.contributor.author | ROŽIČ, Brigita | |
dc.date.issued | 2020-10 | |
dc.identifier.issn | 0957-4522 | |
dc.description.abstractEn | The effects of 2% Zr introduction in Ba0.8Ca0.2TiO3 (BCT) system on its electrical and electrocaloric properties was investigated. BCT and Ba0.8Ca0.2Zr0.02Ti0.98O3 (BCZT) ceramics synthesized by solid-state processing were crystallized in a pure perovskite phase with a group space P4mm. After Zr insertion, the enhanced dielectric constant was obtained around the Curie temperature (Tc) in BCZT ceramic (εr = 6330 at Tc = 388 K) compared to BCT ceramic (εr = 5080 at Tc = 388.6 K). Moreover, the large-signal piezoelectric coefficient (d∗33) was improved from 270 to 310 pm/V in BCT and BCZT ceramics, respectively, under a moderate electric field of 25 kV/cm. The electrocaloric effect was determined via indirect and direct methods. In the indirect approach, the electrocaloric temperature change (ΔT) was calculated via Maxwell relation, and the measured ferroelectric polarization P (E, T) extracted from the P–E curves recorded at 24 kV/cm. The maximum values of ΔT = 0.68 K and the electrocaloric responsivity ζ = 0.283 K mm/kV obtained at 385 K in BCZT ceramic were found to be higher than those observed in BCT ceramic (ΔT = 0.37 K and ζ = 0.154 K mm/kV at 387 K). In the direct approach, ΔT was measured utilizing a modified high-resolution calorimeter at 14 kV/cm. As the direct method is more sensitive to the latent heat, it provided larger values for smaller applied field, i.e., ΔT = 0.474 and 0.668 K for BCT and BCZT ceramics, respectively. A significant ζ of 0.477 K mm/kV was obtained in BCZT at 385 K and 14 kV/cm that matches the values found in lead-based materials. These results suggest that BCZT lead-free ceramics could have an excellent potential to be used in solid-state refrigeration applications. | |
dc.language.iso | en | |
dc.publisher | Springer Verlag | |
dc.title.en | Enhanced electrical properties and large electrocaloric effect in lead-free Ba0.8Ca0.2ZrxTi1−xO3 (x = 0 and 0.02) ceramics | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1007/s10854-020-04259-w | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Journal of Materials Science: Materials in Electronics | |
bordeaux.page | 17018-17028 | |
bordeaux.volume | 31 | |
bordeaux.issue | 19 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02987073 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02987073v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Materials%20Science:%20Materials%20in%20Electronics&rft.date=2020-10&rft.volume=31&rft.issue=19&rft.spage=17018-17028&rft.epage=17018-17028&rft.eissn=0957-4522&rft.issn=0957-4522&rft.au=MERSELMIZ,%20Soukaina&HANANI,%20Zouhair&BEN%20MOUMEN,%20Said&MATAV%C5%BD,%20Aleksander&MEZZANE,%20Daoud&rft.genre=article |
Archivos en el ítem
Archivos | Tamaño | Formato | Ver |
---|---|---|---|
No hay archivos asociados a este ítem. |