Mössbauer characterization of <sup>119</sup>Sn<sup>4+</sup> Dopant ions in the antiferromagnetic ilmenite NiTiO<sub>3</sub>
| hal.structure.identifier | Department of Chemistry, Lomonosov Moscow State University | |
| dc.contributor.author | FABRITCHNYI, P. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | WATTIAUX, Alain | |
| hal.structure.identifier | Department of Chemistry, Lomonosov Moscow State University | |
| dc.contributor.author | KOROLENKO, M. V. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 0038-1098 | |
| dc.description.abstractEn | Magnetic hyperfine splitting of the <sup>119</sup>Sn<sup>4+</sup> nuclear levels in the antiferromagnetic NiTiO<sub>3</sub> was for the first time observed using the Mössbauer effect. For the majority of the <sup>119</sup>Sn<sup>4+</sup> dopant ions, the saturation value of the transferred hyperfine field (at 4.2 K, H = 5.25 T) is found to be equal to that previously reported for <sup>119</sup>Sn<sup>4+ </sup>in the antiferromagnetic MnTi0<sub>3</sub>. This finding shows that in both ilmenites the spin polarization of Sn<sup>4+</sup> is produced by the divalent cation half-filled e<sup>2</sup><sub>g</sub> orbitals involved in interlayer superexchange interactions and implies the location of the dopant within titanium (111) layers. The principal V<sub>zz</sub> component of the EFG at the Sn<sup>4+</sup> site in NiTiO<sub>3</sub> is found to have a positive sign and be aligned along the [111] axis, as it was the case for Sn<sup>4+</sup> in MnTiO<sub>3</sub>. Lattice-sum calculations on the basis of a simple ionic point-charge model, lead to an erroneous result (in either titanate the sign of V<sub>zz</sub> on the Ti<sup>4+</sup> site would be negative) and thus demonstrate their failure in identifying the Sn sites. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Antiferromagnetic materials | |
| dc.subject.en | Nickel titanates | |
| dc.subject.en | Point charge approximation | |
| dc.subject.en | Electric field gradients | |
| dc.subject.en | Superexchange interactions | |
| dc.subject.en | Spin polarization | |
| dc.subject.en | Hyperfine magnetic field | |
| dc.subject.en | Hyperfine splitting | |
| dc.subject.en | Doping | |
| dc.subject.en | Mössbauer effect | |
| dc.title.en | Mössbauer characterization of <sup>119</sup>Sn<sup>4+</sup> Dopant ions in the antiferromagnetic ilmenite NiTiO<sub>3</sub> | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.ssc.2009.06.002 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Solid State Communications | |
| bordeaux.page | 1535-1538 | |
| bordeaux.volume | 149 | |
| bordeaux.issue | 37-38 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00440449 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00440449v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Solid%20State%20Communications&rft.date=2009&rft.volume=149&rft.issue=37-38&rft.spage=1535-1538&rft.epage=1535-1538&rft.eissn=0038-1098&rft.issn=0038-1098&rft.au=FABRITCHNYI,%20P.&WATTIAUX,%20Alain&KOROLENKO,%20M.%20V.&DELMAS,%20Claude&rft.genre=article |
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