Journal
JOURNAL OF CRYSTAL GROWTH
Volume 475, Issue -, Pages 44-48Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2017.05.034
Keywords
X-ray diffraction; Charge ordering; Floating zone technique; YbFe2O4; LuFe2O4; Rare earth compounds
Funding
- DOE Office of Science by Argonne National Laboratory [DE-AC02-06CH11357]
- Helmholz Association of German Research Centres by the Helmholz-University Young Investigators group Complex Ordering Phenomena in Multifunctional Oxides
- EPSRC, UK [EP/M028771/1]
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We report the growth of YbFe2O4 single crystals via the floating zone technique, in four different oxygen partial pressures ranging from CO:CO2 = 1:5 to 1:2.5, for a cross comparison of stoichiometry effects. We obtained highly stoichiometric single crystals with sharp magnetic transitions as well as off-stoichiometric samples with smeared transitions. We also provide for the first time clear evidence of 3D long-range charge order correlations at room temperature in YbFe2O4 through high energy X-ray diffraction, identical to the analogous LuFe2O4. The correlation length obtained for YbFe2O4 in the (c) over right arrow direction is at least a factor of 5 larger than that observed in LuFe2O4. (C) 2017 Elsevier B.V. All rights reserved.
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