Abstract
The interaction between manganese dioxide and xenotime-structure ScPO4 was studied by x-ray diffraction, IR spectroscopy, electron paramagnetic resonance, and luminescence spectroscopy. The results demonstrate that up to 1.5 wt % MnO2 can be accommodated by ScPO4 without structural changes. Mn4+ disproportionates by the reaction Mn4+ → Mn2+ + Mn5+ and is present in the structure of ScPO4 in the form of the Mn2+ ion, substituting for Sc3+, and the MnO43- ion, an analog of PO43-. The presence of Mn3+, substituting isovalently for Sc3+, also cannot be ruled out. The manganese ions are shown to be rigidly fixed in the structure of ScPO4.
Original language | English |
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Pages (from-to) | 1010-1013 |
Number of pages | 4 |
Journal | Inorganic Materials |
Volume | 34 |
Issue number | 10 |
State | Published - Oct 1998 |
Externally published | Yes |