Charge order superstructure with integer iron valence in Fe2OBO3

M. Angst; P. Khalifah; R. P. Hermann; H. J. Xiang; M. H. Whangbo; V. Varadarajan; J. W. Brill; B. C. Sales; D. Mandrus

doi:10.1103/PhysRevLett.99.086403

Charge order superstructure with integer iron valence in Fe2OBO3

M. Angst, P. Khalifah, R. P. Hermann, H. J. Xiang, M. H. Whangbo, V. Varadarajan, J. W. Brill, B. C. Sales, D. Mandrus

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

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.

Original language	English
Article number	086403
Journal	Physical Review Letters
Volume	99
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.99.086403
State	Published - Aug 25 2007
Externally published	Yes

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title = "Charge order superstructure with integer iron valence in Fe2OBO3",

abstract = "Solution-grown single crystals of Fe2OBO3 were characterized by specific heat, M{\"o}ssbauer 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 M{\"o}ssbauer 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.",

author = "M. Angst and P. Khalifah and Hermann, \{R. P.\} and Xiang, \{H. J.\} and Whangbo, \{M. H.\} and V. Varadarajan and Brill, \{J. W.\} and Sales, \{B. C.\} and D. Mandrus",

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doi = "10.1103/PhysRevLett.99.086403",

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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

U2 - 10.1103/PhysRevLett.99.086403

DO - 10.1103/PhysRevLett.99.086403

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VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 086403

ER -

Charge order superstructure with integer iron valence in Fe2OBO3

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