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Kibalin I, Voufack AB, Souhassou M, Gillon B, Gillet JM, Claiser N, Gukasov A, Porcher F, Lecomte C. Spin-resolved atomic orbital model refinement for combined charge and spin density analysis: application to the YTiO 3 perovskite. Acta Crystallogr A Found Adv 2021; 77:96-104. [PMID: 33646195 DOI: 10.1107/s205327332001637x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 12/17/2020] [Indexed: 11/10/2022] Open
Abstract
A new crystallographic method is proposed in order to refine a spin-resolved atomic orbital model against X-ray and polarized neutron diffraction data. This atomic orbital model is applied to the YTiO3 perovskite crystal, where orbital ordering has previously been observed by several techniques: X-ray diffraction, polarized neutron diffraction and nuclear magnetic resonance. This method gives the radial extension, orientation and population of outer atomic orbitals for each atom. The interaction term between Ti3+, Y3+ cations and O2- ligands has been estimated. The refinement statistics obtained by means of the orbital method are compared with those obtained by the multipole model previously published.
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Affiliation(s)
- Iurii Kibalin
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - Ariste Bolivard Voufack
- CRM2, Institut Jean Barriol, Lorraine University and CNRS, BP239, Vandoeuvre-les-Nancy, F54506, France
| | - Mohamed Souhassou
- CRM2, Institut Jean Barriol, Lorraine University and CNRS, BP239, Vandoeuvre-les-Nancy, F54506, France
| | - Béatrice Gillon
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - Jean Michel Gillet
- Laboratoire SPMS, UMR 8580, CentraleSupélec, Paris-Saclay University, Gif-sur-Yvette, 91191, France
| | - Nicolas Claiser
- CRM2, Institut Jean Barriol, Lorraine University and CNRS, BP239, Vandoeuvre-les-Nancy, F54506, France
| | - Arsen Gukasov
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - Florence Porcher
- Laboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
| | - Claude Lecomte
- CRM2, Institut Jean Barriol, Lorraine University and CNRS, BP239, Vandoeuvre-les-Nancy, F54506, France
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