Crystal growth and giant magnetoresistance of rare earth layered cobaltites

Barilo, S. N.; Shiryaev, S. V.; Bychkov, G. L.; Shestak, A. S.; Zhou, Z. X.; Hinkov, V.; Plakhty, V. P.; Chernenkov, Y. P.; Gavrilov, S. V.; Baran, M.; Szymczak, R.; Sheptyakov, D.; Szymczak, H.

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Crystal growth and giant magnetoresistance of rare earth layered cobaltites

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Hinkov, V.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Barilo, S. N., Shiryaev, S. V., Bychkov, G. L., Shestak, A. S., Zhou, Z. X., Hinkov, V., et al. (2006). Crystal growth and giant magnetoresistance of rare earth layered cobaltites. Reviews on Advanced Materials Science, 12(1), 33-45.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FEF2-3

Abstract

A review on progress in crystal growth and study of layered cobaltites
is presented. Single crystals of the LnBaCo(2)O(5+delta) (Ln = Pr, Sm,
Eu, Gd, Tb, Dy, Tb0.9Dy0.1) family with the giant magnetoresistance
(MR) effect were grown by the flux technique. Co-crystallization with
the geometrically frustrated LnBaCo(4)O(7) phase was registered in a
wide range of temperature. The details of structure of the as-grown and
detwinned single crystals and their characterization by magnetic
susceptibility, magnetoresistance, X-ray and neutron diffraction are
discussed. A comparative study of the twinned and twins free
EuBaCo2O5+delta single crystals reveals a positive magnetoresistance
effect similar to 500% at low temperature.