TY - JOUR
T1 - Charge order superstructure with integer iron valence in Fe2OBO3
AU - Angst, M.
AU - Khalifah, P.
AU - Hermann, R. P.
AU - Xiang, H. J.
AU - Whangbo, M. H.
AU - Varadarajan, V.
AU - Brill, J. W.
AU - Sales, B. C.
AU - Mandrus, D.
PY - 2007/8/25
Y1 - 2007/8/25
N2 - Solution-grown single crystals of Fe2OBO3 were characterized by specific heat, Mössbauer spectroscopy, and x-ray diffraction. A peak in the specific heat at 340 K indicates the onset of charge order. Evidence for a doubling of the unit cell at low temperature is presented. Combining structural refinement of diffraction data and Mössbauer spectra, domains with diagonal charge order are established. Bond-valence-sum analysis indicates integer valence states of the Fe ions in the charge ordered phase, suggesting Fe2OBO3 is the clearest example of ionic charge order so far.
AB - Solution-grown single crystals of Fe2OBO3 were characterized by specific heat, Mössbauer spectroscopy, and x-ray diffraction. A peak in the specific heat at 340 K indicates the onset of charge order. Evidence for a doubling of the unit cell at low temperature is presented. Combining structural refinement of diffraction data and Mössbauer spectra, domains with diagonal charge order are established. Bond-valence-sum analysis indicates integer valence states of the Fe ions in the charge ordered phase, suggesting Fe2OBO3 is the clearest example of ionic charge order so far.
UR - https://www.scopus.com/pages/publications/34548269908
UR - https://www.scopus.com/pages/publications/34548269908#tab=citedBy
U2 - 10.1103/PhysRevLett.99.086403
DO - 10.1103/PhysRevLett.99.086403
M3 - Article
C2 - 17930965
AN - SCOPUS:34548269908
SN - 0031-9007
VL - 99
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 086403
ER -