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 sit
Rare-earth and copper magnetism in RSr2Cu2GaO7
β Scribed by Beom-hoan O; C.T. Winkelmann; A.L. Barr; J.T. Markert
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 134 KB
- Volume
- 194-196
- Category
- Article
- ISSN
- 0921-4526
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Electrical resistivity p, magnetization M, and specific heat C measurements have been made on polycrystalline RBaefu307\_ ~ compounds (R = Y or a rare earth element) which, except for R = Ce, Pr and Tb, exhibit superconductivity with T~ ~-90 K. Measurements of C(T) below T c reveal (1) a contributio
Polycrystalline samples RSr2Cu2.7Mo0.307 \_ 8 with R = Y, Pr, Gd, and Tb were synthesized and studied by means of powder X-ray diffraction, electrical resistivity, magnetic susceptibility, and specific-heat measurements. All four samples form a perovskite-layer structure with a tetragonal symmetry.