Bekheet, Maged F. ; Dubrovinsky, Leonid ; Gurlo, Aleksander (2015)
Compressibility and structural stability of spinel-type MnIn2O4.
In: Journal of Solid State Chemistry, 230
doi: 10.1016/j.jssc.2015.07.016
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Spinel-type MnIn2O4 materials are synthesized at 500 °C from an In3+–Mn3+ co-precipitate; the synthesis is based on the in situ reduction of Mn3+ to Mn2+ during calcination. The structure refinement of the powder X-ray diffraction data reveals that the degree of inversion i of the (View the MathML sourceMn1-i2+Ini3+)[View the MathML sourceMni2+In2-i3+]O4 spinel synthesized in the air and N2 is small (i=0.08) and increases to 0.30 for the spinel synthesized in Ar. The distribution of Mn cations over tetrahedral and octahedral sites is confirmed by X-ray absorption near-edge spectroscopy. As shown by the high-temperature in situ X-ray diffractometry, MnIn2O4 spinel is stable against oxidation in the air up to 550 °C. The in situ X-ray diffraction experiments in a diamond anvil cell reveal that MnIn2O4 is stable up to 22 GPa at room temperature. The bulk modulus B0 and its first pressure derivative View the MathML sourceB0' determined by the third-order Birch–Murnaghan equation of state are 139.8(4) GPa and 5.4(5), respectively.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Bekheet, Maged F. ; Dubrovinsky, Leonid ; Gurlo, Aleksander |
| Art des Eintrags: | Bibliographie |
| Titel: | Compressibility and structural stability of spinel-type MnIn2O4 |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2015 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Solid State Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 230 |
| DOI: | 10.1016/j.jssc.2015.07.016 |
| Kurzbeschreibung (Abstract): | Spinel-type MnIn2O4 materials are synthesized at 500 °C from an In3+–Mn3+ co-precipitate; the synthesis is based on the in situ reduction of Mn3+ to Mn2+ during calcination. The structure refinement of the powder X-ray diffraction data reveals that the degree of inversion i of the (View the MathML sourceMn1-i2+Ini3+)[View the MathML sourceMni2+In2-i3+]O4 spinel synthesized in the air and N2 is small (i=0.08) and increases to 0.30 for the spinel synthesized in Ar. The distribution of Mn cations over tetrahedral and octahedral sites is confirmed by X-ray absorption near-edge spectroscopy. As shown by the high-temperature in situ X-ray diffractometry, MnIn2O4 spinel is stable against oxidation in the air up to 550 °C. The in situ X-ray diffraction experiments in a diamond anvil cell reveal that MnIn2O4 is stable up to 22 GPa at room temperature. The bulk modulus B0 and its first pressure derivative View the MathML sourceB0' determined by the third-order Birch–Murnaghan equation of state are 139.8(4) GPa and 5.4(5), respectively. |
| Freie Schlagworte: | Manganese indate, Spinel, In situ characterization, High pressure, Diamond anvil cell, Bulk modulus |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Jan 2016 09:18 |
| Letzte Änderung: | 08 Jan 2016 09:18 |
| PPN: | |
| Sponsoren: | The financial support by the German Research Foundation DFG (Grant number GU 992/8-1) within the priority programme SPP 1236 are greatly acknowledged. |
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