Effects of the substitution of titanium by iron and niobium on the structure and dielectric properties in BaTi1-x(Fe0.5Nb0.5)xO3 solid solution
| hal.structure.identifier | Laboratoire de Physique Appliquée [Université de Sfax] [LPA] | |
| dc.contributor.author | ABDELKAFI, Z. | |
| hal.structure.identifier | Laboratoire de Physique Appliquée [Université de Sfax] [LPA] | |
| dc.contributor.author | ABDELMOULA, Najmeddine | |
| hal.structure.identifier | Laboratoire de Physique Appliquée [Université de Sfax] [LPA] | |
| dc.contributor.author | KHEMAKHEM, Hamadi | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VON DER MÜHLL, Régnault | |
| hal.structure.identifier | Laboratoire de Physico-Chimie des Matériaux | |
| dc.contributor.author | BIH, Lahcen | |
| dc.date.issued | 2007 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | Polycrystalline samples of BaTi1−x(Fe0.5Nb0.5)xO3 with x = 0.025, 0.05, 0.075, 0.1, 0.125 and 0.15 have been synthesized by high-temperature solid-state reaction technique. The effects of cationic substitution of iron and niobium for titanium in the B sites for BaTiO3 perovskite lattice on symmetry and dielectric properties were investigated. X-ray diffraction at room temperature and dielectric permittivity in the temperature range from 85 to 500 K with frequencies range from 103 to 2 × 105 Hz, respectively, were studied. The evolution from a normal ferroelectric to a relaxor ferroelectric is emphasized. TC or Tm decreases when both iron and niobium are introduced in the lattice of BaTiO3. A high dielectric constant of around 30,000 at TC = 280 K was found for BaTi0.925(Fe0.5Nb0.5)0.075O3 ceramic. A relaxor ferroelectric with ΔTm = 12 K and ε′r about 13,800 at 10 kHz with Tm = 186 K was found for BaTi0.875(Fe0.5Nb0.5)0.125O3 sample. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Ferroelectrics | |
| dc.subject.en | X-ray diffraction | |
| dc.subject.en | Dielectric response | |
| dc.title.en | Effects of the substitution of titanium by iron and niobium on the structure and dielectric properties in BaTi1-x(Fe0.5Nb0.5)xO3 solid solution | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2006.03.028 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 260-266 | |
| bordeaux.volume | 427 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00122592 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00122592v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2007&rft.volume=427&rft.spage=260-266&rft.epage=260-266&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=ABDELKAFI,%20Z.&ABDELMOULA,%20Najmeddine&KHEMAKHEM,%20Hamadi&VON%20DER%20M%C3%9CHLL,%20R%C3%A9gnault&BIH,%20Lahcen&rft.genre=article |
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