CobaltMaghrebV1, Main, Exploration, bibRecord, 000627

Synthesis and characterization of the pyrochlore Bi1.56Sb1.48-xNbxCo0.96O7 solid solution

Identifieur interne : 000627 ( Main/Exploration ); précédent : 000626; suivant : 000628

Synthesis and characterization of the pyrochlore Bi1.56Sb1.48-xNbxCo0.96O7 solid solution

Auteurs : Mayouf Sellami [Algérie] ; Vincent Caignaert [France] ; Ahmed Bekka [Algérie] ; Noureddine Bettahar [Algérie]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2010.

RBID : Pascal:10-0176860

Descripteurs français

Pascal (Inist)
- Paramètre cristallin, Spectre IR, Susceptibilité magnétique, Paramagnétisme, Valence, Perte diélectrique, Résistivité résiduelle, Composition chimique, Propriété diélectrique, Microscopie électronique balayage, Oxyde, Solution solide, Pyrochlores.
Wicri :
- geographic : Valence (Drôme).
- topic : Oxyde.

English descriptors

KwdEn :
- Chemical composition, Dielectric losses, Dielectric properties, Infrared spectra, Lattice parameters, Magnetic susceptibility, Oxides, Paramagnetism, Pyrochlore type compound, Residual resistivity, Scanning electron microscopy, Solid solutions, Valence.

Abstract

A new pyrochlore solid solution with formula Bi_1.56Sb_1.48-xNb_xCo_0.96O₇ has been synthesized using ceramic method at 1000°C. Composition dependencies of cell parameters showed a linear increase with niobium x fraction. The IR-active bands characteristic of A and B sites of pyrochlore compound have been detected by infrared spectroscopy. The magnetic susceptibility measurements achieved between 4 and 300 K indicate a paramagnetic behavior with an oxidation state "+2" for the cobalt ion. The results of dielectric measurements show large dielectric loss due to residual electronic conductivity.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000097
to stream PascalFrancis, to step Curation: 000198
to stream PascalFrancis, to step Checkpoint: 000079
to stream Main, to step Merge: 000630
to stream Main, to step Curation: 000627

Le document en format XML

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Sb<sub>1.48-x</sub>
Nb<sub>x</sub>
Co<sub>0.96</sub>
O<sub>7</sub>
 solid solution</title>
<author><name sortKey="Sellami, Mayouf" sort="Sellami, Mayouf" uniqKey="Sellami M" first="Mayouf" last="Sellami">Mayouf Sellami</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Synthesis and characterization of the pyrochlore Bi<sub>1.56</sub>
Sb<sub>1.48-x</sub>
Nb<sub>x</sub>
Co<sub>0.96</sub>
O<sub>7</sub>
 solid solution</title>
<author><name sortKey="Sellami, Mayouf" sort="Sellami, Mayouf" uniqKey="Sellami M" first="Mayouf" last="Sellami">Mayouf Sellami</name>
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<s2>31000 El-Mnaouer Oran</s2>
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<sZ>1 aut.</sZ>
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<wicri:noRegion>31000 El-Mnaouer Oran</wicri:noRegion>
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<author><name sortKey="Caignaert, Vincent" sort="Caignaert, Vincent" uniqKey="Caignaert V" first="Vincent" last="Caignaert">Vincent Caignaert</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Cristallographie et Sciences des Matériaux, ENSICAEN-CNRS UMR 6508, 6 boulevard du Maréchal Juin</s1>
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<s3>FRA</s3>
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<author><name sortKey="Bekka, Ahmed" sort="Bekka, Ahmed" uniqKey="Bekka A" first="Ahmed" last="Bekka">Ahmed Bekka</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physico-Chimie des Matériaux-Catalyse et Environnement, Faculté des Sciences, Département de Chimie, Université des Sciences et de la Technologie d'Oran, B.P. 1505</s1>
<s2>31000 El-Mnaouer Oran</s2>
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<wicri:noRegion>31000 El-Mnaouer Oran</wicri:noRegion>
</affiliation>
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<author><name sortKey="Bettahar, Noureddine" sort="Bettahar, Noureddine" uniqKey="Bettahar N" first="Noureddine" last="Bettahar">Noureddine Bettahar</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physico-Chimie des Matériaux-Catalyse et Environnement, Faculté des Sciences, Département de Chimie, Université des Sciences et de la Technologie d'Oran, B.P. 1505</s1>
<s2>31000 El-Mnaouer Oran</s2>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chemical composition</term>
<term>Dielectric losses</term>
<term>Dielectric properties</term>
<term>Infrared spectra</term>
<term>Lattice parameters</term>
<term>Magnetic susceptibility</term>
<term>Oxides</term>
<term>Paramagnetism</term>
<term>Pyrochlore type compound</term>
<term>Residual resistivity</term>
<term>Scanning electron microscopy</term>
<term>Solid solutions</term>
<term>Valence</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Paramètre cristallin</term>
<term>Spectre IR</term>
<term>Susceptibilité magnétique</term>
<term>Paramagnétisme</term>
<term>Valence</term>
<term>Perte diélectrique</term>
<term>Résistivité résiduelle</term>
<term>Composition chimique</term>
<term>Propriété diélectrique</term>
<term>Microscopie électronique balayage</term>
<term>Oxyde</term>
<term>Solution solide</term>
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<front><div type="abstract" xml:lang="en">A new pyrochlore solid solution with formula Bi<sub>1.56</sub>
Sb<sub>1.48-x</sub>
Nb<sub>x</sub>
Co<sub>0.96</sub>
O<sub>7</sub>
 has been synthesized using ceramic method at 1000°C. Composition dependencies of cell parameters showed a linear increase with niobium x fraction. The IR-active bands characteristic of A and B sites of pyrochlore compound have been detected by infrared spectroscopy. The magnetic susceptibility measurements achieved between 4 and 300 K indicate a paramagnetic behavior with an oxidation state "+2" for the cobalt ion. The results of dielectric measurements show large dielectric loss due to residual electronic conductivity.</div>
</front>
</TEI>
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<tree><country name="Algérie"><noRegion><name sortKey="Sellami, Mayouf" sort="Sellami, Mayouf" uniqKey="Sellami M" first="Mayouf" last="Sellami">Mayouf Sellami</name>
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<country name="France"><region name="Région Normandie"><name sortKey="Caignaert, Vincent" sort="Caignaert, Vincent" uniqKey="Caignaert V" first="Vincent" last="Caignaert">Vincent Caignaert</name>
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Synthesis and characterization of the pyrochlore Bi1.56Sb1.48-xNbxCo0.96O7 solid solution

Synthesis and characterization of the pyrochlore Bi1.56Sb1.48-xNbxCo0.96O7 solid solution

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri