Structure refinement, dielectric, pyroelectric and Raman characterizations of Ba1−xLax(1−y)/2Euxy/2Nax/2TiO3 solid solution
| 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 | SIMON, Annie | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAGLIONE, Mario | |
| dc.date.issued | 2006 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | The perovskite-type oxides Ba1−xLax(1−y)/2Euxy/2Nax/2TiO3 (0less-than-or-equals, slantxless-than-or-equals, slant0.5 and xy=0.04) were synthesized and characterized by X-ray diffraction as well as dielectric measurements and Raman spectroscopy. The crystal structure of these ceramics has been determined by the Rietveld refinement powder X-ray diffraction data at room temperature. These compounds crystallize at room temperature in tetragonal space group P4mm for 0less-than-or-equals, slantxless-than-or-equals, slant0.1 and in the cubic group Click to view the MathML source for 0.2less-than-or-equals, slantxless-than-or-equals, slant0.5. The phase transition temperature TC (or Tm) decreases as x content increases. The degree of diffuseness of the phase transition is more pronounced for higher x content, implying the existence of a composition-induced diffuse phase transition of the ceramics with xgreater-or-equal, slanted0.1. The evolution of the Raman spectra was studied as a function of various compositions at room temperature. The polarization state was checked by pyroelectric measurements. (Copyright 2006 Elsevier Inc) | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.title.en | Structure refinement, dielectric, pyroelectric and Raman characterizations of Ba1−xLax(1−y)/2Euxy/2Nax/2TiO3 solid solution | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2006.09.006 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | 4011-4019 | |
| bordeaux.volume | 179 (12) | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00124299 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00124299v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2006&rft.volume=179%20(12)&rft.spage=4011-4019&rft.epage=4011-4019&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=ABDELMOULA,%20Najmeddine&KHEMAKHEM,%20Hamadi&SIMON,%20Annie&MAGLIONE,%20Mario&rft.genre=article |
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