Mössbauer investigation of 57Fe-doped Ni(III) perovskites ANi0.98Fe0.02O3 (A = Pr, Nd, Sm, Y, Lu, Tl) versus temperature
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | KIM, Seung-Joo | |
hal.structure.identifier | Chair of Radiochemistry, Department of Chemistry | |
dc.contributor.author | PRESNIAKOV, Igor | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | DEMAZEAU, Gérard | |
hal.structure.identifier | Chair of Radiochemistry, Department of Chemistry | |
dc.contributor.author | POKHOLOK, Konstantin | |
hal.structure.identifier | Chair of Radiochemistry, Department of Chemistry | |
dc.contributor.author | BARANOV, Alexey | |
hal.structure.identifier | Chair of Radiochemistry, Department of Chemistry | |
dc.contributor.author | SOBOLEV, Alexey | |
hal.structure.identifier | Chair of Radiochemistry, Department of Chemistry | |
dc.contributor.author | PANKRATOV, Denis | |
hal.structure.identifier | Institute of Problems of Chemical Physics | |
dc.contributor.author | OVANESYAN, Nikolay S. | |
dc.date.issued | 2002 | |
dc.identifier.issn | 0022-4596 | |
dc.description.abstractEn | Nickelates ANiO3 (A=Pr, Nd, Sm, Lu, Y, Tl) containing Mössbauer probe 57Fe atoms were synthesized. In the case of nickelates with larger rare earth (A=Pr, Nd, Sm) the Mössbauer spectra confirm that ferric ions are located in single type of crystallographic positions. On the contrary, the spectra of ANi0.98Fe0.02O3 with small cations (A=Lu, Y, Tl) can be described as a superposition of two sub-spectra which indicate that 57Fe probe atoms are simultaneously stabilized in two non-equivalent crystallographic positions. These results have been interpreted in terms of partial charge disproportionation of Ni3+ cations associated with the electronic localization in monoclinic distorted Lu, Y, Tl nickelates. The modification of 57Fe spectra for TlNi0.98Fe0.02O3 as a function of temperature has shown that this charge disproportionation occurs in varying degrees, corresponding to the charge states Fe(3+σ)+ and Fe(3−σ′)+. On the contrary, the spectra for Lu and Y nickelates show that charge variation (σ,σ′) for dopant Fe(1) and Fe(2) cations does not depend on temperature. | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.title.en | Mössbauer investigation of 57Fe-doped Ni(III) perovskites ANi0.98Fe0.02O3 (A = Pr, Nd, Sm, Y, Lu, Tl) versus temperature | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1006/jssc.2002.9699 | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Journal of Solid State Chemistry | |
bordeaux.page | 126-133 | |
bordeaux.volume | 168 | |
bordeaux.issue | 1 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00817239 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
dc.subject.it | Mössbauer spectroscopy | |
dc.subject.it | Perovskite | |
dc.subject.it | Trivalent nickel | |
dc.subject.it | Charge disproportionation | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00817239v1 | |
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