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Pbca-Type In2O3: the high-pressure post-corundum phase at room temperature
Authors
A. L. J. Pereira
A. Morales-García
+66 more
A. Muñoz
A. Segura
Atou T.
B. García-Domene
Bekheet M. F.
Bekheet M. F.
Biesterbos J. W. M.
Burroughes J. H.
C. Popescu
Caracas R.
Christensen A. N.
D. Errandonea
D. Martínez-García
D. Santamaría-Pérez
Dewaele A.
Ellmer K.
Epifani M.
F. J. Manjón
Fauth F.
Favier F.
García-Domene B.
Geller S.
Gurlo A.
Gurlo A.
Gurlo A.
Gurlo A.
H. M. Ortiz
Hsu S. F.
J. A. Sans
Karazhanov S. Zh.
Kaspar T. C.
King P. D. C.
Kraus W.
Kresse G.
Kresse G.
Kresse G.
Kresse G.
Lan J. L.
Liu D.
Ma C.
Martínez-Cruz L. A.
Murakami M.
O. Gomis
Ovsyannikov S. V.
P. Rodríguez-Hernández
Prewitt C. T.
Qi J.
R. Vilaplana
Santamaría-Pérez D.
Shannon R. D.
Sootsman J. R.
Sorescu M.
Syassen K.
Takada T.
Toby B. H.
Umemoto K.
Vegas A.
Vegas A.
Walsh A.
Wang Ch.-Y.
Xu B.
Xu J. Q.
Yu D.
Yu D.
Yusa H.
Yusa H.
Publication date
4 September 2014
Publisher
'American Chemical Society (ACS)'
Doi
Cite
Abstract
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/jp5061599High-pressure powder X-ray diffraction and Raman scattering measurements in cubic bixbyite-type indium oxide (c-In2O3) have been performed at room temperature. On increasing pressure c-In2O3 undergoes a transition to the Rh2O3-II structure but on decreasing pressure Rh2O3-II-type In2O3 undergoes a transition to a previously unknown phase with Pbca space group which is isostructural to Rh2O3-III. On further decrease of pressure, we observed a phase transition to the metastable corundum-type In2O3 near room conditions. Recompression of the metastable corundum-type In2O3 at room temperature leads to a transition to the Rh2O3-III phase, thus showing that the Rh2O3-III phase is the post-corundum phase at room temperature. Our results are supported by theoretical ab initio calculations. Furthermore, they show that the Rh2O3-III phase could be present in other sesquioxides, thus prompting to a revision of the pressure-temperature phase diagrams of sesquioxidesFinancial support by the Spanish MEC under Grant No. MAT2010-21270-C04-01/03/04, MAT2013-46649-C4-1/2/3-P, by MALTA Consolider Ingenio 2010 project (CSD2007-00045) and by Generalitat Valenciana (GVA-ACOMP-2013-012). Red Espanola de Supercomputacion (RES) and ALBA Synchrotron Light Source are also acknowledged. B.G.-D. and J.A.S. acknowledge financial support through the FPI program and Juan de la Cierva fellowship, respectively. We also thank J. L. Jorda for fruitful discussions. A.L.J.P. acknowledges financial support through Brazilian CNPq. A.S. expresses thanks to FEDER Grant UNLV10-3E-1253 for financial support.García-Domene, B.; Sans Tresserras, JÁ.; Gomis, O.; Manjón Herrera, FJ.; Ortiz, HM.; Errandonea, D.; Santamaría Pérez, D.... (2014). Pbca-Type In2O3: the high-pressure post-corundum phase at room temperature. Journal of Physical Chemistry C. 118(35):20545-20552. https://doi.org/10.1021/jp5061599S20545205521183
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