Title :
Magnetic noise properties of YBCO/PBCO superlattices
Author :
Drouet, M. ; Foulds, S.A. ; Klein, U. ; Muirhead, C.M. ; Smithyman, J. ; Wellhofer, F. ; Woodall, P.
Author_Institution :
Birmingham Univ., UK
fDate :
6/1/1995 12:00:00 AM
Abstract :
We have measured the magnetic flux noise of two discs of YBCO/PBCO. The specimens were grown by pulsed laser ablation, had 10 alternating layers of YBCO and PBCO but with different thicknesses of PBCO. Each specimen was characterised by X-ray diffraction and a/c susceptibility measurement. We find that the noise peaks sharply at around Tc for each sample and with a noise power which is Tc dependent. We compare the results with a single layer YBCO film grown by co-evaporation.<>
Keywords :
X-ray diffraction; barium compounds; high-temperature superconductors; magnetic noise; magnetic susceptibility; pulsed laser deposition; superconducting superlattices; superconducting thin films; superlattices; yttrium compounds; AC susceptibility; X-ray diffraction; YBCO/PBCO superlattices; YBaCuO-PrBaCuO; critical temperature; discs; magnetic flux noise; pulsed laser ablation; Laser ablation; Laser noise; Magnetic flux; Magnetic noise; Magnetic properties; Magnetic superlattices; Noise measurement; Optical pulses; X-ray lasers; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
