<abstract xmlns="http://www.w3.org/1999/xhtml"> In this work spinel series with the general formula Fe1-xMnxAl2O4 (where x = 0, 0.3, 0.5 and 0.7) were synthesized and characterized with respect to their structure and microstructure. X-ray diffractometry (XRD) was used to identify the phase composition that revealed a single phase spinel material. Rietveld refinements of the XRD patterns were carried out in order to determine the lattice and oxygen positional parameters of the spinel compounds. Mössbauer effect measurements were performed at room temperature to determine the local chemical environment of the Fe ions, their valences, and degrees of spinels inversion. It was shown that an increase in the Mn content led to a decrease in the ratio of Fe2+ to Fe3+. The results obtained from Mössbauer spectroscopy (MS) were used to establish the chemical formulas of the synthesized spinels. Finally, the microstructure that was observed using scanning electron microscopy (SEM) showed a compact microstructure with an octahedral crystal habit.</abstract>

In this work spinel series with the general formula Fe1-xMnxAl2O4 (where x = 0, 0.3, 0.5 and 0.7) were synthesized and characterized with respect to their structure and microstructure. X-ray diffractometry (XRD) was used to identify the phase composition that revealed a single phase spinel material. Rietveld refinements of the XRD patterns were carried out in order to determine the lattice and oxygen positional parameters of the spinel compounds. Mössbauer effect measurements were performed at room temperature to determine the local chemical environment of the Fe ions, their valences, and degrees of spinels inversion. It was shown that an increase in the Mn content led to a decrease in the ratio of Fe2+ to Fe3+. The results obtained from Mössbauer spectroscopy (MS) were used to establish the chemical formulas of the synthesized spinels. Finally, the microstructure that was observed using scanning electron microscopy (SEM) showed a compact microstructure with an octahedral crystal habit.

Structural properties of Mn-substituted hercynite

Nukleonika

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{"article-title":"Structural properties of Mn-substituted hercynite"}

In this work spinel series with the general formula Fe1-xMnxAl2O4 (where x = 0, 0.3, 0.5 and 0.7) were synthesized and characterized with respect to their...

Structural properties of Mn-substituted hercynite

Online veröffentlicht: 09. Juni 2017

Seitenbereich: 95 - 100

Eingereicht: 03. Aug. 2016

Akzeptiert: 28. Okt. 2016

DOI: https://doi.org/10.1515/nuka-2017-0013

Schlüsselwörter
FeAl2O4, MnAl2O4, hercynite, spinel, galaxite, Mössbauer spectroscopy

© by Ilona Jastrzębska

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Structural properties of Mn-substituted hercynite

Online veröffentlicht: 09. Juni 2017

Seitenbereich: 95 - 100

Eingereicht: 03. Aug. 2016

Akzeptiert: 28. Okt. 2016

DOI: https://doi.org/10.1515/nuka-2017-0013

SchlüsselwörterFeAl2O4, MnAl2O4, hercynite, spinel, galaxite, Mössbauer spectroscopy

© by Ilona Jastrzębska

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Schlüsselwörter
FeAl2O4, MnAl2O4, hercynite, spinel, galaxite, Mössbauer spectroscopy