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Competition between copper and rare earth magnetic sublattices in Ho2Cu2O5 and Yb2Cu2O5

✍ Scribed by J.L. Garci´a-Mun˜oz; X. Obradors; J. Rodri´guez-Carvajal

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
161 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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✦ Synopsis

In most of the R2Cu205 cuprates (R, rare earth; R:Tb-->Lu, Y, Sc), copper and rare earth magnetic sublattices order simultaneously. Neutron diffraction studies down to 1.5 K in Ho2Cu205 and Yb2Cu205 reveal a more complex magnetic behaviour in these oxides. Competing interactions between Cu and R sites lead to intermediate reorientations of copper spins. In the Yb-compound, copper sublattices display temperature dependent uncommensurate magnetic ordering above a first order transition of copper and rare earth moments.

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