Academic literature on the topic 'Oxide quasicrystal approximants'

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Journal articles on the topic "Oxide quasicrystal approximants"

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Huran, Ahmad W., Hai-Chen Wang, and Miguel A. L. Marques. "Two-dimensional binary metal-oxide quasicrystal approximants." 2D Materials 8, no. 4 (2021): 045002. http://dx.doi.org/10.1088/2053-1583/ac0c03.

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Dorini, Thiago Trevizam, Florian Brix, Corentin Chatelier, Anton Kokalj, and Émilie Gaudry. "Two-dimensional oxide quasicrystal approximants with tunable electronic and magnetic properties." Nanoscale 13, no. 24 (2021): 10771–79. http://dx.doi.org/10.1039/d1nr02407h.

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Yamada, Tsunetomo. "A four-dimensional model for the Ba–Ti–O dodecagonal quasicrystal." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 78, no. 2 (2022): 247–52. http://dx.doi.org/10.1107/s205252062200227x.

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A four-dimensional (4D) model is presented of the first oxide dodecagonal quasicrystal found in a Ba–Ti–O ultra-thin film on a Pt(111) single-crystal substrate. The 4D model, with a 4D dodecagonal lattice constant a d = 8.39 Å, was derived by considering a tile decoration model of dodecagonal Niizeki–Gähler tiling composed of squares, triangles and 30° rhombuses. The model consists of four kinds of occupation domain, and 4D positional vectors defining the shape of each occupation domain are given. Moreover, the atomic arrangement of two Ba–Ti–O periodic approximants, the sigma-phase approximan
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Ruano Merchan, C., T. T. Dorini, F. Brix, et al. "Two-dimensional square and hexagonal oxide quasicrystal approximants in SrTiO3 films grown on Pt(111)/Al2O3(0001)." Physical Chemistry Chemical Physics 24, no. 12 (2022): 7253–63. http://dx.doi.org/10.1039/d1cp05296a.

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An all-thin-film approach allows the synthesis of novel two-dimensional quasicrystalline approximants and an atomic scale description is provided based on combined experimental and theoretical investigations.
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Förster, Stefan, Sebastian Schenk, Eva Maria Zollner, et al. "Quasicrystals and their Approximants in 2D Ternary Oxides." physica status solidi (b) 257, no. 7 (2019): 1900624. http://dx.doi.org/10.1002/pssb.201900624.

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Kang, Song-Seng, and Jean-Marie Dubois. "Influence of the annealing atmosphere on the formation of Al–Cu–Fe quasicrystals." Journal of Materials Research 10, no. 5 (1995): 1071–74. http://dx.doi.org/10.1557/jmr.1995.1071.

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Icosahedral samples of nominal composition Al63.5Cu24Fe12.5, which normally grow a rhombohedral approximant crystal, were submitted to heat treatments of various durations. The atmosphere in contact with the surface of the specimens was either dry air or secondary vacuum in order to test whether the formation of the icosahedral phase is sensitive or not to the nature of the atmosphere. Materials annealed in air showed a very thin surface layer of oxide which contained hydrogen. Beneath this oxide layer, small quantities of oxygen and hydrogen were also detected within the underlying lattice. T
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Demange, V., J. Ghanbaja, C. Beeli, F. Machizaud та J. M. Dubois. "Study of decagonal approximant and γ-brass-type compounds in Al–Cr–Fe thin films". Journal of Materials Research 19, № 8 (2004): 2285–97. http://dx.doi.org/10.1557/jmr.2004.0311.

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This paper reports the preparation conditions and structure characteristics of Al–Cr–Fe very thin films (10–30 nm) obtained by the flash evaporation technique. The films are either amorphous or crystallized, depending on the thickness of the sample and temperature of the substrate. Annealing of amorphous films leads to crystallization of intermetallic phases that are all linked with quasicrystals. In particular, we have identified by transmission electron microscopy the following structures: body-centered-cubic (bcc) γ-brass phase, monoclinic λ–Al13(Cr,Fe)4 phase, and orthorhombic O1-phase, al
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Schenk, Sebastian, Stefan Förster, Klaus Meinel, et al. "Observation of a dodecagonal oxide quasicrystal and its complex approximant in the SrTiO3-Pt(1 1 1) system." Journal of Physics: Condensed Matter 29, no. 13 (2017): 134002. http://dx.doi.org/10.1088/1361-648x/aa5bdb.

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Li, Xu, Keito Horiba, Ryoichi Sugiura, Tomoaki Yamada, and Junji Yuhara. "Growth of Ba–O ultrathin films on Pt(1 1 1) followed by Ti incorporation to prepare oxide crystalline approximants and quasicrystals." Applied Surface Science 561 (September 2021): 150099. http://dx.doi.org/10.1016/j.apsusc.2021.150099.

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Mancinelli, Chris, Jeff S. Ko, Cynthia J. Jenks, et al. "Comparative Study of the Tribological and Oxidative Properties of AlPdMn Quasicrystals and Their Cubic Approximants." MRS Proceedings 643 (2000). http://dx.doi.org/10.1557/proc-643-k8.2.

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AbstractAn experimental comparison has been made between the properties of the surfaces of an Al70Pd21Mn9 quasicrystal and its Al48Pd42Mn10 approximant. The Al70Pd21Mn9 sample was a single grain icosahedral quasicrystal cut to expose its five-fold symmetric (000001) surface. The approximant was polycrystalline β-phase Al48Pd42Mn10, which has a CsCl-type cubic structure. Surfaces of both were prepared under ultra-high vacuum (UHV) conditions and then used for comparative measurements of their frictional properties and oxidation rates. Both materials are oxidized by reaction with O2 to form a th
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Dissertations / Theses on the topic "Oxide quasicrystal approximants"

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Ruano, Merchán Catalina. "Synthesis and characterization of 2D complex oxide films in the SrTiO₃/Pt(111)/Al₂O₃(0001) system." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0039.

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La formation d’oxydes quasicristallins dodécagonaux 2D (OQC), ainsi que celle de phases approximantes associées ont été récemment rapportées dans des films minces dérivés des pérovskites BaTiO₃ ou SrTiO₃, déposés sur des monocristaux de Pt orientés (111). Ces structures 2D ajoutent de nouvelles fonctionnalités aux films ultra-minces d’oxydes ternaires supportés sur des métaux à l’approche de la limite 2D. Ici, nous utilisons une approche d’empilement de couches minces dans laquelle le monocristal est remplacé par une couche tampon de Pt(111), déposée par MBE sur un substrat d’Al₂O₃(0001). Un f
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