Relaxor behavior of K0.5La0.5Bi2Nb2O9 ceramics
| hal.structure.identifier | Indian Institute of Science [Bangalore] [IISc Bangalore] | |
| dc.contributor.author | KARTHIK, C. | |
| hal.structure.identifier | Indian Institute of Science [Bangalore] [IISc Bangalore] | |
| dc.contributor.author | RAVISHANKAR, N. | |
| hal.structure.identifier | Indian Institute of Science [Bangalore] [IISc Bangalore] | |
| dc.contributor.author | VARMA, K. B. R. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAGLIONE, Mario | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VON DER MÜHLL, Régnault | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | ETOURNEAU, Jean | |
| dc.date.issued | 2006 | |
| dc.identifier.issn | 0003-6951 | |
| dc.description.abstractEn | K0.5La0.5Bi2Nb2O9, a relaxor, was synthesized and the structural studies confirmed it to be an n=2 member of the Aurivillius oxides. The (1/2){h00} and (1/2){hk0} types of superlattice reflections in the electron diffraction patterns reflected the presence of ordered polar regions. A broad dielectric peak with frequency dependent dielectric maximum temperature was observed. The dielectric relaxation obeyed the Vogel-Fulcher relation wherein Ea=0.04 eV, Tf=428 K,and omegao=1010 Hz. The diffuseness parameter gamma=2.003 established the relaxor nature and it was attributed to the A-site cationic disorder. The piezoelectric d31 coefficient was 0.5 pC/N at 300 K and 2 pC/N at 480 K. | |
| dc.language.iso | en | |
| dc.publisher | American Institute of Physics | |
| dc.subject.en | Niobates | |
| dc.subject.en | titanates | |
| dc.subject.en | tantalates | |
| dc.subject.en | PZT ceramics... | |
| dc.subject.en | Dielectric loss and relaxation | |
| dc.subject.en | Ferroelectricity and antiferroelectricity | |
| dc.subject.en | Piezoelectricity and electromechanical effects | |
| dc.subject.en | Permittivity (dielectric function) | |
| dc.subject.en | PZT ceramics | |
| dc.title.en | Relaxor behavior of K0.5La0.5Bi2Nb2O9 ceramics | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1063/1.2234848 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Applied Physics Letters | |
| bordeaux.page | 042905 (3 p.) | |
| bordeaux.volume | 89 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00111134 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00111134v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Applied%20Physics%20Letters&rft.date=2006&rft.volume=89&rft.issue=4&rft.spage=042905%20(3%20p.)&rft.epage=042905%20(3%20p.)&rft.eissn=0003-6951&rft.issn=0003-6951&rft.au=KARTHIK,%20C.&RAVISHANKAR,%20N.&VARMA,%20K.%20B.%20R.&MAGLIONE,%20Mario&VON%20DER%20M%C3%9CHLL,%20R%C3%A9gnault&rft.genre=article |
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