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Relevant bibliographies by topics / Octahedral tilting

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Academic literature on the topic 'Octahedral tilting'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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Journal articles on the topic "Octahedral tilting"

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Grey, Ian E. "Kagomé networks of octahedrally coordinated metal atoms in minerals: Relating different mineral structures through octahedral tilting." Mineralogical Magazine 84, no. 5 (2020): 640–52. http://dx.doi.org/10.1180/mgm.2020.72.

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AbstractKagomé nets of corner-connected triangles of atoms occur in diverse minerals, from the {111} anion arrays in perovskite-group minerals to natural metallic alloys like auricupride, AuCu3, to the cation layers in atacamite-group minerals. We review here two- and three-dimensional kagomé networks in minerals where the kagomé node atoms are octahedrally coordinated in hexagonal tungsten bronze (HTB) arrays. Octahedral tilting, coupled with capping of the apical anions of the triangular groupings of octahedra in the HTB layers, gives rise to several important mineral groups, including pyroc

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2

Woodward, P. M. "Octahedral Tilting in Perovskites. I. Geometrical Considerations." Acta Crystallographica Section B Structural Science 53, no. 1 (1997): 32–43. http://dx.doi.org/10.1107/s0108768196010713.

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The 23 Glazer tilt systems describing octahedral tilting in perovskites have been investigated. It is shown that in tilt systems a + a + a −, a + b + b −, a + a + c −, a + b + c −, a 0 b + b − and a 0 b + c − it is not possible to link together a three-dimensional network of perfectly rigid octahedra. In these tilt systems small distortions of the octahedra must occur. The magnitude of the distortions in the a + a + a − and a 0 b + b − tilt systems are estimated. A table of predicted space groups for ordered perovskites, A 2 MM′O6, for all 23 tilt systems is also given.

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Howard, Christopher J., Brendan J. Kennedy, and Patrick M. Woodward. "Ordered double perovskites – a group-theoretical analysis." Acta Crystallographica Section B Structural Science 59, no. 4 (2003): 463–71. http://dx.doi.org/10.1107/s0108768103010073.

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Group-theoretical methods are used to enumerate the structures of ordered double perovskites, A 2 BB′X 6, in which the ordering of cations B and B′ into alternate octahedra is considered in combination with the ubiquitous BX 6 (or B′X 6) octahedral tilting. The cation ordering on the B-cation site is described by the irreducible representation R_1^+ of the Pm \overline 3 m space group of the cubic aristotype, while the octahedral tilting is mediated by irreducible representations M_3^+ and R_4^+. There are 12 different structures identified, and the corresponding group–subgroup relationships a

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4

Whittle, Thomas A., Siegbert Schmid, and Christopher J. Howard. "Octahedral tilting in the tungsten bronzes." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 71, no. 3 (2015): 342–48. http://dx.doi.org/10.1107/s2052520615008252.

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Possibilities for `simple' octahedral tilting in the hexagonal and tetragonal tungsten bronzes (HTB and TTB) have been examined, making use of group theory as implemented in the computer programISOTROPY. For HTB, there is one obvious tilting pattern, leading to a structure in space groupP63/mmc. This differs from the space groupP63/mcmfrequently quoted from X-ray studies – these studies have in effect detected only displacements of the W cations from the centres of the WO6octahedra. The correct space group, taking account of both W ion displacement and the octahedral tilting, isP6322 – structu

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5

Lufaso, Michael W., Paris W. Barnes, and Patrick M. Woodward. "Structure prediction of ordered and disordered multiple octahedral cation perovskites using SPuDS." Acta Crystallographica Section B Structural Science 62, no. 3 (2006): 397–410. http://dx.doi.org/10.1107/s010876810600262x.

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The software package SPuDS has previously been shown to accurately predict crystal structures of AMX 3 and A 1 − x A′ x MX 3 perovskites that have undergone octahedral tilting distortions. This paper describes the extension of this technique and its accuracy for A 2 MM′X 6 ordered double perovskites with the aristotype Fm\overline 3m cubic structure, as well as those that have undergone octahedral tilting distortions. A survey of the literature shows that roughly 70% of all ordered double perovskites undergo octahedral tilting distortions. Of the 11 distinct types of octahedral tilting that ca

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Boffa Ballaran, Tiziana, Kanchana Kularatne, and Reidar Trønnes. "High-pressure structural behaviour of CaIrO3polymorphs." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C267. http://dx.doi.org/10.1107/s2053273314097320.

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The two known polymorphs of CaIrO3 crystallize int the orthorhombic space groups Pbnm and Cmcm. These compounds have been the focus of much research in the Earth sciences community because they are isostructural with MgSiO3 perovskite and post-perovskite structures which are likely the most abundant minerals in the Earth's lower mantle. CaIrO3 post-perovskite is stable at ambient conditions and transforms at 1-3 GPa and at temperatures above 13500C to the CaIrO3 perovskite structure providing an ideal low pressure and low temperature analogue for the MgSiO3 perovskite to post-perovskite phase

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7

Woodward, P. M., and A. W. Sleight. "Octahedral tilting distortions in the perovskite structure." Acta Crystallographica Section A Foundations of Crystallography 52, a1 (1996): C322. http://dx.doi.org/10.1107/s010876739608662x.

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8

Whittle, Thomas A., Siegbert Schmid, and Christopher J. Howard. "Octahedral tilting in the tungsten bronzes. Addendum." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 74, no. 6 (2018): 742–44. http://dx.doi.org/10.1107/s2052520618015263.

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The studies of octahedral tilting in the tungsten bronzes [Whittle et al. (2015). Acta Cryst. B71, 342–348] were continued in the context of a more general approach to cooperative rotations of interconnected rigid units [Campbell et al. (2018). Acta Cryst. A74, 408–424]. That more general approach has detailed possible structures not identified in our 2015 paper. A brief comment on the implications of finite tilts for octahedral distortion is included.

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9

Lufaso, Michael W., René B. Macquart, Yongjae Lee, Thomas Vogt, and Hans-Conrad zur Loye. "Pressure induced octahedral tilting distortion in Ba2YTaO6." Chem. Commun., no. 2 (2006): 168–70. http://dx.doi.org/10.1039/b512861g.

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Howard, C. J., and H. T. Stokes. "Group-Theoretical Analysis of Octahedral Tilting in Perovskites." Acta Crystallographica Section B Structural Science 54, no. 6 (1998): 782–89. http://dx.doi.org/10.1107/s0108768198004200.

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A group-theoretical analysis is made of the structures derived from the aristotype cubic perovskite (Pm3¯m) by the simple tilting of rigid octahedral units. The tilting is mediated by the irreducible representations R^+_4 and M^+_3 or the two in combination. These result in 15 possible structures, compared with the 23 possibilities suggested previously by Glazer [Acta Cryst. (1972), B28, 3384–3392]. The analysis makes the group–subgroup relationships apparent.

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Dissertations / Theses on the topic "Octahedral tilting"

1

Knapp, Meghan C. "Investigations into the structure and properties of ordered perovskites, layered perovskites, and defect pyrochlores." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1149097068.

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Kavanagh, Christopher M. "Synthesis and structure-property relationships in rare earth doped bismuth ferrite." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3555.

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There has been significant interest in BiFeO₃ over the past decade. This interest has focused on the magnetic and electrical properties, which in the long term may prove useful in device applications. This thesis focuses on the synthesis, electrical characterisation, and structural origin of the electrical properties of rare earth doped bismuth ferrite. Two systems have been studied: BiFeO₃ doped with lanthanum and neodymium (Bi₁₋ₓREₓFeO₃ RE= La, Nd). Specific examples have been highlighted focusing on a detailed structural analysis of a lanthanum doped bismuth ferrite, Bi₀.₅La₀.₅FeO₃, and a n

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Conference papers on the topic "Octahedral tilting"

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Levin, I., M. C. Stennett, G. C. Miles, D. I. Woodward, A. R. West, and I. M. Reaney. "Octahedral Tilting and Ferroelectric Order in Tetragonal Tungsten Bronze-Like Dielectrics." In 2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics. IEEE, 2007. http://dx.doi.org/10.1109/isaf.2007.4393236.

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Ghosh, Dibyajyoti. "Good Vibrations: Locking of Octahedral Tilting in Mixed-Cation Iodide Perovskites for Solar Cells." In 3rd International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics. Fundació Scito, 2017. http://dx.doi.org/10.29363/nanoge.abxpvperopto.2018.071.

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