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| Verfasst von: | Schouwink, Pascal [VerfasserIn]  |
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| | Dubrovinsky, Leonid [VerfasserIn] |
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| | Glazyrin, Konstantin [VerfasserIn] |
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| | Merlini, Marco [VerfasserIn] |
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| | Hanfland, Michael [VerfasserIn] |
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| | Pippinger, Thomas [VerfasserIn] |
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| | Miletich-Pawliczek, Ronald [VerfasserIn] |
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| Titel: | High-pressure structural behavior of α-Fe2O3 studied by single-crystal X-ray diffraction and synchrotron radiation up to 25 GPa |
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| Verf.angabe: | Pascal Schouwink, Leonid Dubrovinsky, Konstantin Glazyrin, Marco Merlini, Michael Hanfland, Thomas Pippinger, Ronald Miletich |
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| E-Jahr: | 2011 |
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| Jahr: | [2011] |
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| Umfang: | 6 S. |
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| Fussnoten: | Elektronische Reproduktion der Druckausgabe ; Gesehen am 26.10.2022 |
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| Titel Quelle: | Enthalten in: American mineralogist |
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| Ort Quelle: | Berlin : de Gruyter, 1916 |
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| Jahr Quelle: | 2011 |
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| Band/Heft Quelle: | 96(2011), 11-12, Seite 1781-1786 |
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| ISSN Quelle: | 1945-3027 |
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| Abstract: | In situ X‑ray diffraction experiments were carried out at pressures up to 25 GPa on a synthetic hematite (α-Fe 2 O 3 ) crystal using synchrotron radiation in an angle-dispersive setup. Experiments were performed in diamond-anvil cells using neon as a pressure-transmitting medium. Single-crystal diffraction data were collected from omega scans and structural refinements were carried out for 10 pressure points. Bulk and linear incompressibilities were obtained from least-squares fits of refined data to the Eulerian strain based Birch-Murnaghan equation of state. Finite strain analysis suggests a truncation at second order, yielding results of K 0 = 207(3), Ka 0 = 751(17), and K c0 = 492(8) for bulk and axial moduli, respectively. The a-axis is about 1.5 times stiffer than the c-axis. Compression of the main structural feature, the FeO 6 octahedra, is quite uniform, with just slight changes of distortion parameters at higher pressures. |
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| DOI: | doi:10.2138/am.2011.3775 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.2138/am.2011.3775 |
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| | Volltext: https://www.degruyter.com/document/doi/10.2138/am.2011.3775/html |
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| | DOI: https://doi.org/10.2138/am.2011.3775 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | axial anisotropy |
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| | Compressibility |
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| | diamond-anvil cell |
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| | hematite |
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| | neon pressure medium |
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| K10plus-PPN: | 1820017702 |
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| Verknüpfungen: | → Zeitschrift |
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High-pressure structural behavior of α-Fe2O3 studied by single-crystal X-ray diffraction and synchrotron radiation up to 25 GPa / Schouwink, Pascal [VerfasserIn]; [2011] (Online-Ressource)
