Since the discovery of high-temperature superconductors a new microwave absorption has
been found which is reviewed here in detail. The microwaves are absorbed in the flux …

EPR and magnetic results are reported for oxygen deficient, nonsuperconducting R Ba 2 Cu
3 O 6+ x (R= Nd, Sm) compounds. The magnetic-susceptibility χ (T) and isothermal M (H) …

EPR spectra of (i) CuO annealed in air at different temperatures up to 900 C and (ii) CuO
reacted with BaO in the ratio 3: 2 at different temperatures up to 900 C were studied. In (i) …

The electron-spin resonance (ESR) of a copper oxide La 4 Ba 2 Cu 2 O 10, which shows a
ferromagnetic transition at around 5 K, has been studied. The ESR spectra show a …

As demonstrated by the unique electronic properties of nanostructured materials, which are
qualitatively different from the bulk properties of the same materials, there should be a …

Low-temperature EPR measurements are presented for the PrBa 2 Cu 3 O 6+ x and Pr 0.5 R
0.5 Ba 2 Cu 3 O 6+ x (R= Y, Er) compounds with oxygen deficiency (tetragonal phase). The …

Magnetization and neutron diffraction measurements on polycrystalline BaCuO2+ x
revealed a combination of magnetic behaviors. The Cu6 ring clusters and Cu18 sphere …

Static magnetization M and ac magnetic susceptibility measurements in applied magnetic
fields H up to 55 kG are reported for a polycrystalline He-annealed sample of BaCuO 2+ x …

Single crystals of the novel copper molybdenum oxides η-CuMoO4 and β-Cu3Mo2O9 are
synthesized by a hydrothermal method. Both oxides have triclinic unit cells (space group) …

The recently reported superconductor Sr2CuO2F2. 4 is synthesised by a new route of
fluorination by NH4HF2 and its superconducting phase is investigated by electron …