$Synchrotron X-ray diffraction study of ErMn2D2$

Synchrotron X-ray diffraction study of ErMn2D2

ErMn2D2 deuteride has been studied by high-resolution synchrotron X-ray powder diffraction at temperatures between 150 and 298K. Below 210K a transformation from the hexagonal C14 Laves phase type structure (space group P63/mmc; a=5.55357(3)A; c=9.05368(7)A; T=298K) into the monoclinic one crystalli...

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Veröffentlicht in:	Journal of alloys and compounds 2007-06, Vol.437 (1-2), p.140-145
Hauptverfasser:	MAEHLEN, J. P, YARTYS, V. A, RIABOV, A. B, BUDZIAK, A, FIGIEL, H, ZUKROWSKI, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Crystalline state (including molecular motions in solids) Crystallographic aspects of phase transformations pressure effects Exact sciences and technology Physics Structure of solids and liquids crystallography
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Beschreibung
Zusammenfassung:	ErMn2D2 deuteride has been studied by high-resolution synchrotron X-ray powder diffraction at temperatures between 150 and 298K. Below 210K a transformation from the hexagonal C14 Laves phase type structure (space group P63/mmc; a=5.55357(3)A; c=9.05368(7)A; T=298K) into the monoclinic one crystallising in the space group C2/m (a=9.61247(9)A; b=5.57558(4)A; c=9.07102(8)A; beta=90.5451(5) deg ; T=150K) takes place. A rather large two-phase region of coexistence of both structural modifications was observed between 185 and 205K.
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2006.07.088