Review of polyhedral distortions as a multi-scale minimization of the electric polarization and their correlations with physical properties
Identifieur interne : 000287 ( PascalFrancis/Corpus ); précédent : 000286; suivant : 000288Review of polyhedral distortions as a multi-scale minimization of the electric polarization and their correlations with physical properties
Auteurs : Abderrahim BenabbasSource :
- Acta crystallographica. Section B, Structural science [ 0108-7681 ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Article synthèse, Minimisation, Polarisation électrique, Effet Jahn Teller, Distorsion réseau, Valence, Densité électron, Elongation, Composition chimique, Relation structure propriété, Potassium fluorure, Nickel fluorure, Composé ternaire, Perovskite, K2NiF4, F K Ni, 7170E, 6166F, Phase Ruddlesden-Popper.
English descriptors
- KwdEn :
Abstract
The Jahn-Teller (JT) and non-Jahn-Teller polyhedral distortions are reviewed within the same context, based on a multi-scale minimization of the electric polarization by handling formal ionic valences and valence electron density. This model is applied to tetragonal distortions of octahedra, particularly in K2NiF4 structures with different formula types, along with doping. The predictions are always in good agreement with the observed data. In particular, the ferrodistortive order of JT distortions is obtained from formal charge polarizations, while the antiferrodistortive one is adopted when only the valence electron density is involved. The correlations between physical properties and octahedral elongations through the crystal structures on one side and chemical compositions on the other side are discussed according to this model for high-Tc cuprate superconductors and CMR manganites.
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Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 06-0242473 INIST |
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ET : | Review of polyhedral distortions as a multi-scale minimization of the electric polarization and their correlations with physical properties |
AU : | BENABBAS (Abderrahim) |
AF : | LIME Laboratory, University of Jijel, BP 98/Ouled-Aissa, 18000 Jijel/Algérie (1 aut.) |
DT : | Publication en série; Papier de recherche; Niveau analytique |
SO : | Acta crystallographica. Section B, Structural science; ISSN 0108-7681; Coden ASBSDK; Royaume-Uni; Da. 2006; Vol. 62; No. 1; Pp. 9-15; Bibl. 1 p.1/4 |
LA : | Anglais |
EA : | The Jahn-Teller (JT) and non-Jahn-Teller polyhedral distortions are reviewed within the same context, based on a multi-scale minimization of the electric polarization by handling formal ionic valences and valence electron density. This model is applied to tetragonal distortions of octahedra, particularly in K2NiF4 structures with different formula types, along with doping. The predictions are always in good agreement with the observed data. In particular, the ferrodistortive order of JT distortions is obtained from formal charge polarizations, while the antiferrodistortive one is adopted when only the valence electron density is involved. The correlations between physical properties and octahedral elongations through the crystal structures on one side and chemical compositions on the other side are discussed according to this model for high-Tc cuprate superconductors and CMR manganites. |
CC : | 001B70A70E; 001B60A66F2 |
FD : | Article synthèse; Minimisation; Polarisation électrique; Effet Jahn Teller; Distorsion réseau; Valence; Densité électron; Elongation; Composition chimique; Relation structure propriété; Potassium fluorure; Nickel fluorure; Composé ternaire; Perovskite; K2NiF4; F K Ni; 7170E; 6166F; Phase Ruddlesden-Popper |
FG : | Composé minéral; Métal transition composé |
ED : | Reviews; Minimization; Electrical polarization; Jahn-Teller effect; Lattice distortion; Valence; Electron density; Elongation; Chemical composition; Property structure relationship; Potassium fluorides; Nickel fluorides; Ternary compounds; Perovskite; Ruddlesden-Popper phase |
EG : | Inorganic compounds; Transition element compounds |
SD : | Polarización eléctrica; Distorsión red; Relación estructura propiedad |
LO : | INIST-5160B.354000142815550020 |
ID : | 06-0242473 |
Links to Exploration step
Pascal:06-0242473Le document en format XML
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<term>Minimization</term>
<term>Nickel fluorides</term>
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<front><div type="abstract" xml:lang="en">The Jahn-Teller (JT) and non-Jahn-Teller polyhedral distortions are reviewed within the same context, based on a multi-scale minimization of the electric polarization by handling formal ionic valences and valence electron density. This model is applied to tetragonal distortions of octahedra, particularly in K<sub>2</sub>
NiF<sub>4</sub>
structures with different formula types, along with doping. The predictions are always in good agreement with the observed data. In particular, the ferrodistortive order of JT distortions is obtained from formal charge polarizations, while the antiferrodistortive one is adopted when only the valence electron density is involved. The correlations between physical properties and octahedral elongations through the crystal structures on one side and chemical compositions on the other side are discussed according to this model for high-T<sub>c</sub>
cuprate superconductors and CMR manganites.</div>
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NiF<sub>4</sub>
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<ET>Review of polyhedral distortions as a multi-scale minimization of the electric polarization and their correlations with physical properties</ET>
<AU>BENABBAS (Abderrahim)</AU>
<AF>LIME Laboratory, University of Jijel, BP 98/Ouled-Aissa, 18000 Jijel/Algérie (1 aut.)</AF>
<DT>Publication en série; Papier de recherche; Niveau analytique</DT>
<SO>Acta crystallographica. Section B, Structural science; ISSN 0108-7681; Coden ASBSDK; Royaume-Uni; Da. 2006; Vol. 62; No. 1; Pp. 9-15; Bibl. 1 p.1/4</SO>
<LA>Anglais</LA>
<EA>The Jahn-Teller (JT) and non-Jahn-Teller polyhedral distortions are reviewed within the same context, based on a multi-scale minimization of the electric polarization by handling formal ionic valences and valence electron density. This model is applied to tetragonal distortions of octahedra, particularly in K<sub>2</sub>
NiF<sub>4</sub>
structures with different formula types, along with doping. The predictions are always in good agreement with the observed data. In particular, the ferrodistortive order of JT distortions is obtained from formal charge polarizations, while the antiferrodistortive one is adopted when only the valence electron density is involved. The correlations between physical properties and octahedral elongations through the crystal structures on one side and chemical compositions on the other side are discussed according to this model for high-T<sub>c</sub>
cuprate superconductors and CMR manganites.</EA>
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