Data di Pubblicazione:
2009
Abstract:
The crystal structure of SmFeAsO was investigated by means of Rietveld refinement of high-resolution
synchrotron powder diffraction data collected at 300K and 100K. The compound crystallizes in the tetragonal
P4/nmmspace group at 300K and in the orthorhombic Cmma space group at 100K; attempts to refine
the low temperature data in the monoclinic P112/n space group diverged. On the basis of both resistive
and magnetic analyses the tetragonal to orthorhombic phase transition may be located at T~140 K.
synchrotron powder diffraction data collected at 300K and 100K. The compound crystallizes in the tetragonal
P4/nmmspace group at 300K and in the orthorhombic Cmma space group at 100K; attempts to refine
the low temperature data in the monoclinic P112/n space group diverged. On the basis of both resistive
and magnetic analyses the tetragonal to orthorhombic phase transition may be located at T~140 K.
Tipologia CRIS:
01.01 Articolo in rivista
Elenco autori:
Putti, Marina; Ferdeghini, Carlo; Martinelli, ALBERTO MARIO
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