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Redetermination of Nd2Ti2O7: a non-centrosymmetric structure with perovskite-type slabs.
- Source :
-
Acta crystallographica. Section E, Structure reports online [Acta Crystallogr Sect E Struct Rep Online] 2013 Mar 06; Vol. 69 (Pt 4), pp. i19. Date of Electronic Publication: 2013 Mar 06 (Print Publication: 2013). - Publication Year :
- 2013
-
Abstract
- Single crystals of dineodymium(III) dititanium(IV) hepta-oxide, Nd2Ti2O7, were synthesized by the flux method and found to belong to the family of compounds with perovskite-type structural motifs. The asymmetric unit contains four Nd, four Ti and 14 O-atom sites. The perovskite-type slabs are stacked parallel to (010) with a thickness corresponding to four corner-sharing TiO6 octa-hedra. The Nd and Ti ions are displaced from the geometrical centres of respective coordin-ation polyhedra so that the net polarization occurs along the c axis. The investigated crystals were all twinned and have a halved monoclinic unit cell in comparison with the first structure determination of this compound [Scheunemann & Müller-Buschbaum (1975 ▶). J. Inorg. Nucl. Chem. 37, 2261-2263].
Details
- Language :
- English
- ISSN :
- 1600-5368
- Volume :
- 69
- Issue :
- Pt 4
- Database :
- MEDLINE
- Journal :
- Acta crystallographica. Section E, Structure reports online
- Publication Type :
- Academic Journal
- Accession number :
- 23633981
- Full Text :
- https://doi.org/10.1107/S1600536813005497