4 research outputs found
Microwave surface impedance anisotropy of YBaCuO single crystals with different oxygen content
The linear microwave response of ultra high-quality YBaCuO single
crystals grown in BaZrO crucibles is measured at 9.4 GHz in rf magnetic
fields parallel and perpendicular to the -plane in the temperature range
5 K. Having found the analytic solution for the magnetic field
distribution on the sample surface we determine both the surface impedance
in the -plane and along c-axis of
the crystals. For the first time the evolution of the and
dependences on the same sample and in a wide range of oxygen content is
obtained. For (optimum oxygen content) the temperature dependence of
the imaginary part of the c-axis conductivity
is found to be strikingly similar to that of
and becomes more convex with lowering.Comment: 2 pages, 2 figures. To be published in Physica C as LT23 Proceeding