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Figure 13
Diffractograms of the NdCo sample during the reduction with humid H2 at increasing temperature. A new phase, which could be assigned to bcc Fe/Co, was formed above 550 °C – the corresponding (110) reflection is marked by the green box. A shift of the corresponding peak to lower angles was observed at higher temperatures, which was stronger than expected from thermal expansion (compare position to red line). At 600 °C, a CaO phase (brown box) appeared. Both the metallic bcc phase and the CaO phase were more prominent at higher temperatures, while the perovskite structure (reflections labelled `P'; for the respective hkl indices, cf. Fig. 2[link]) stayed intact.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 76| Part 6| December 2020| Pages 1055-1070
https://doi.org/10.1107/S2052520620013475
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