Version 1
: Received: 4 January 2024 / Approved: 4 January 2024 / Online: 4 January 2024 (15:43:13 CET)
How to cite:
Kądziołka-Gaweł, M.; Adamczyk, Z.; Dulski, M.; Gębara, P.; Nowak, J.; Wojtyniak, M. An In-Situ Mössbauer Study of the High-Temperature Behavior of Siderite under Reduction Conditions. Preprints2024, 2024010402. https://doi.org/10.20944/preprints202401.0402.v1
Kądziołka-Gaweł, M.; Adamczyk, Z.; Dulski, M.; Gębara, P.; Nowak, J.; Wojtyniak, M. An In-Situ Mössbauer Study of the High-Temperature Behavior of Siderite under Reduction Conditions. Preprints 2024, 2024010402. https://doi.org/10.20944/preprints202401.0402.v1
Kądziołka-Gaweł, M.; Adamczyk, Z.; Dulski, M.; Gębara, P.; Nowak, J.; Wojtyniak, M. An In-Situ Mössbauer Study of the High-Temperature Behavior of Siderite under Reduction Conditions. Preprints2024, 2024010402. https://doi.org/10.20944/preprints202401.0402.v1
APA Style
Kądziołka-Gaweł, M., Adamczyk, Z., Dulski, M., Gębara, P., Nowak, J., & Wojtyniak, M. (2024). An <em>In-Situ</em> Mössbauer Study of the High-Temperature Behavior of Siderite under Reduction Conditions. Preprints. https://doi.org/10.20944/preprints202401.0402.v1
Chicago/Turabian Style
Kądziołka-Gaweł, M., Jacek Nowak and Marcin Wojtyniak. 2024 "An <em>In-Situ</em> Mössbauer Study of the High-Temperature Behavior of Siderite under Reduction Conditions" Preprints. https://doi.org/10.20944/preprints202401.0402.v1
Abstract
The thermal decomposition of siderite and its decomposition products in a vacuum atmosphere was investigated for the first time using in situ high-temperature transmission Mössbauer spectroscopy. These measurements were supported by X-ray diffraction, Raman spectroscopy, X-ray fluorescence, and magnetic measurements. In situ Mössbauer spectra were collected from room temperature (RT) to 750 oC with a temperature step of 50 oC. After that, the sample was cooled down to RT with step 100 oC. Raw siderite samples contain siderite as the only iron-bearing mineral, and after heating the samples at high temperatures, hematite and magnetite are only Fe-bearing phases. In the temperature range of 300 oC - 500 oC, siderite decomposition occurs. The analysis shows that siderite transforms directly into magnetite, and then hematite generation occurs as long as siderite is present in the sample. Changing hyperfine parameters like isomer shift, quadrupole splitting, or hyperfine magnetic field versus temperature were obtained for siderite and iron oxides (hematite, magnetite). The measurements also show that magnetite formed during the decomposition of siderite is a composition of particles of various sizes and a low degree of crystallization.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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