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Neutron scattering of H.T.S.C. Materials : Zn substituted Versus Pure YBCO, Nuclear and Magnetic Structures, Spin Excitations.

Published online by Cambridge University Press:  22 February 2011

G. Collin ,
R. Villeneuve ,
Y. Sidis ,
Ph. Bourges ,
B. Hennion ,
F. Onufrieva ,
B. Gillon ,
F. Bouree ,
I. Mirebeau  and
P. Mendels
...Show all authors
G. Collin
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
R. Villeneuve
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
Y. Sidis
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
Ph. Bourges
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
B. Hennion
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
F. Onufrieva
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
B. Gillon
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
F. Bouree
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
I. Mirebeau
Affiliation:
Laboratoire Léon Brillouin, C.E. Saclay, 91191 Gif/sur/Yvette, France, CEDEX
P. Mendels
Affiliation:
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
H. Alloul
Affiliation:
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
F. Marucco
Affiliation:
Laboratoire des Composés Non-Stoéchiométriques, Université Paris-Sud, 91405 Orsay, France
P. Schweiss
Affiliation:
Kernforschungzentrum Karlruhe, Institut für Nukleare Festkörperphysik, 76021 Karlsruhe, Germany
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Abstract

The Zn substitution on Cu(2) sites in YBa2(Cu1-yZny)3O6+x materials is most probably limited to yzn ≈ 0.04. Results of neutron diffraction associated with NMR and μ+SR results reveal ; i) a lowering of TN in the pure AF region x≤0.20 due to a dilution effect of the antiferromagnetic lattice by a static non magnetic impurity, ii) the existence of a non conventionnal magnetic behavior within the intermediate region x≥0.35 characterized by an unusual temperature dependance of magnetic intensities, a reentrancy and the existence of diffuse magnetic scattering (this region is much broader in oxygen composition for Zn-doped than for pure YBCO),iii) an unusual spin dynamics in the "doped A-F phase" which corresponds to a coupling of magnetic excitations to the hole dynamics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 376: Symposium BB – Neutron Scattering in Materials Science , 1994 , 513
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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