Influence of nickel doping on oxygen-ionic conductivity of the n = 1 Ruddlesden-Popper Phases La1.85Ca0.15(Cu1−xNix)O4−δ (δ = 0.0905)
Identifieur interne : 000008 ( Main/Exploration ); précédent : 000007; suivant : 000009Influence of nickel doping on oxygen-ionic conductivity of the n = 1 Ruddlesden-Popper Phases La1.85Ca0.15(Cu1−xNix)O4−δ (δ = 0.0905)
Auteurs : Adnene Midouni [Tunisie] ; Mohamed Ikbal Houchati [Tunisie] ; Walid Belhaj Othman [Tunisie] ; Nassira Chniba-Boudjada [France] ; Monica Ceretti [France] ; Werner Paulus [France] ; Mouna Jaouadi [Tunisie] ; Ahmed Hichem Hamzaoui [Tunisie]Source :
- Journal of Solid State Chemistry [ 0022-4596 ] ; 2016.
Abstract
The results of the synthesis and characterization of the optimally doped La1.85Ca0.15(Cu1−xNix)O4-δ solid solution with x = 0, 0.1, 0.2 and 0.3 are reported. The versatility of these La1.85Ca0.15(Cu1−xNix)O4−δ materials is explained on the basis of structural features and the ability to accommodate oxygen nonstoichiometry. According to powder X-ray and neutron diffraction data, La1.85Ca0.15(Cu1−xNix)O4−δ adopts the tetragonal structure with oxygen vacancies occurring preferentially at the Oap sites within the {(La/Ca)O} layers of the perovskite blocks and the oxygen deviation from stoichiometry δ was found to be δ=0.0905(6). The bulk conductivity indicated an Arrhenius-type thermally activated process and oxygen vacancies are the possible ionic charge carriers at T=270 °C. An increase of the conductivity was detected when Ni was introduced. With nickel ratio variation, a strong correlation was observed between the Cu(Ni)-Oap apical bond length variation and the conductivity variation through controlling the O2− ion migration.
Url:
DOI: 10.1016/j.jssc.2016.05.017
Affiliations:
- France, Tunisie
- Languedoc-Roussillon, Occitanie (région administrative)
- Montpellier
- PRES Sud de France, Université Montpellier 1
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type="direct"><org type="institution" xml:id="struct-300370" status="VALID"> <orgName>Ecole Nationale Supérieure de Chimie de Montpellier</orgName> <orgName type="acronym">ENSCM</orgName> <desc> <address> <addrLine>8 Rue de l'Ecole Normale 34296 Montpellier Cedex 5</addrLine> <country key="FR"></country> </address> <ref type="url">http://www.enscm.fr</ref> </desc></org></tutelle><tutelle name="UMR5253" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"> <idno type="ISNI">0000000122597504</idno> <idno type="IdRef">02636817X</idno> <orgName>Centre National de la Recherche Scientifique</orgName> <orgName type="acronym">CNRS</orgName> <date type="start">1939-10-19</date> <desc> <address> <country key="FR"></country> </address> <ref type="url">http://www.cnrs.fr/</ref> </desc></org></tutelle></tutelles></hal:affiliation><country>France</country><placeName><settlement type="city">Montpellier</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region></placeName><orgName type="university">Université Montpellier 1</orgName><orgName type="institution" wicri:auto="newGroup">PRES Sud de France</orgName></affiliation></author><author><name sortKey="Jaouadi, Mouna" sort="Jaouadi, Mouna" uniqKey="Jaouadi M" first="Mouna" last="Jaouadi">Mouna Jaouadi</name><affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-462010" status="INCOMING"> <orgName>Useful Materials Valorization Laboratory, National Centre of Research in Materials Science</orgName> <desc> <address> <addrLine>Technologic Park of Borj Cedria, B.P. 73, 8027 Soliman</addrLine> <country key="TN"></country> </address> </desc></hal:affiliation><country>Tunisie</country></affiliation></author><author><name sortKey="Hamzaoui, Ahmed Hichem" sort="Hamzaoui, Ahmed Hichem" uniqKey="Hamzaoui A" first="Ahmed Hichem" last="Hamzaoui">Ahmed Hichem Hamzaoui</name><affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-462010" status="INCOMING"> <orgName>Useful Materials Valorization Laboratory, National Centre of Research in Materials Science</orgName> <desc> <address> <addrLine>Technologic Park of Borj Cedria, B.P. 73, 8027 Soliman</addrLine> <country key="TN"></country> </address> </desc></hal:affiliation><country>Tunisie</country></affiliation></author></analytic><idno type="DOI">10.1016/j.jssc.2016.05.017</idno><series><title level="j">Journal of Solid State Chemistry</title><idno type="ISSN">0022-4596</idno><imprint><date type="datePub">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The results of the synthesis and characterization of the optimally doped La1.85Ca0.15(Cu1−xNix)O4-δ solid solution with x = 0, 0.1, 0.2 and 0.3 are reported. The versatility of these La1.85Ca0.15(Cu1−xNix)O4−δ materials is explained on the basis of structural features and the ability to accommodate oxygen nonstoichiometry. According to powder X-ray and neutron diffraction data, La1.85Ca0.15(Cu1−xNix)O4−δ adopts the tetragonal structure with oxygen vacancies occurring preferentially at the Oap sites within the {(La/Ca)O} layers of the perovskite blocks and the oxygen deviation from stoichiometry δ was found to be δ=0.0905(6). The bulk conductivity indicated an Arrhenius-type thermally activated process and oxygen vacancies are the possible ionic charge carriers at T=270 °C. An increase of the conductivity was detected when Ni was introduced. With nickel ratio variation, a strong correlation was observed between the Cu(Ni)-Oap apical bond length variation and the conductivity variation through controlling the O2− ion migration.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Languedoc-Roussillon</li><li>Occitanie (région administrative)</li></region><settlement><li>Montpellier</li></settlement><orgName><li>PRES Sud de France</li><li>Université Montpellier 1</li></orgName></list><tree><country name="Tunisie"><noRegion><name sortKey="Midouni, Adnene" sort="Midouni, Adnene" uniqKey="Midouni A" first="Adnene" last="Midouni">Adnene Midouni</name></noRegion><name sortKey="Hamzaoui, Ahmed Hichem" sort="Hamzaoui, Ahmed Hichem" uniqKey="Hamzaoui A" first="Ahmed Hichem" last="Hamzaoui">Ahmed Hichem Hamzaoui</name><name sortKey="Houchati, Mohamed Ikbal" sort="Houchati, Mohamed Ikbal" uniqKey="Houchati M" first="Mohamed Ikbal" last="Houchati">Mohamed Ikbal Houchati</name><name sortKey="Jaouadi, Mouna" sort="Jaouadi, Mouna" uniqKey="Jaouadi M" first="Mouna" last="Jaouadi">Mouna Jaouadi</name><name sortKey="Othman, Walid Belhaj" sort="Othman, Walid Belhaj" uniqKey="Othman W" first="Walid Belhaj" last="Othman">Walid Belhaj Othman</name></country><country name="France"><noRegion><name sortKey="Chniba Boudjada, Nassira" sort="Chniba Boudjada, Nassira" uniqKey="Chniba Boudjada N" first="Nassira" last="Chniba-Boudjada">Nassira Chniba-Boudjada</name></noRegion><name sortKey="Ceretti, Monica" sort="Ceretti, Monica" uniqKey="Ceretti M" first="Monica" last="Ceretti">Monica Ceretti</name><name sortKey="Paulus, Werner" sort="Paulus, Werner" uniqKey="Paulus W" first="Werner" last="Paulus">Werner Paulus</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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