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  • Reim, J. D., et al. (author)
  • Structural invariance upon antiferromagnetic ordering in geometrically frustrated swedenborgite, CaBaCo2Fe2O7
  • 2014
  • In: Journal of Applied Crystallography. - 1600-5767. ; 47, s. 2038-2047
  • Journal article (peer-reviewed)abstract
    • Centimetre-sized single crystals of high-quality CaBaCo2Fe2O7 were synthesized by the optical floating zone technique. The metal-to-metal stoichiometry and oxygen content were confirmed by spectroscopy and thermal reduction experiments. The hexagonal symmetry P6(3)mc (No. 186) well describes the powder X-ray and neutron diffraction as well as single-crystal neutron diffraction at all measured temperatures. This symmetry is also consistent with optical second harmonic generation data obtained between 10 and 295 K. However, a satisfactory structure description from single-crystal neutron diffraction data needs an oxygen split position. Specific heat, magnetic susceptibility and powder neutron diffraction data indicate a magnetic phase transition at T-N = 159 K to an antiferromagnetic ground state, but with a persisting hexagonal symmetry and intrinsic geometric frustration.
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journal article (1)
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peer-reviewed (1)
Author/Editor
Hu, Z (1)
Kuo, C. Y. (1)
Schmidt, M. (1)
Fiebig, M. (1)
Rosén, E (1)
Pi, T. W. (1)
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Meier, D. (1)
Valldor, M. (1)
Schweika, Werner (1)
Reim, J. D. (1)
Meven, M. (1)
Leo, N. R. (1)
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Lund University (1)
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Year
2014 (1)

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