Zobrazeno 1 - 10
of 28
pro vyhledávání: '"R. E. Somekh"'
Autor:
F.M. Saba, J. V. Thomas, L. F. Cohen, P. G. Quincey, ZH Jafri, Chris Jeynes, John A. Kilner, D. Lacey, A.D. Caplin, Y. H. Li, R. E. Somekh, Y. Li
Publikováno v:
Journal of Materials Science. 31:6137-6144
It was found from plan-view transmission electron microscopy (TEM) observations that c-oriented YBa2Cu3O7−δ (YBCO) films on LaAlO3, prepared by the magnetron sputtering technique had a single crystalline-like YBCO matrix, but always contained some
Autor:
C. Hudson, R. E. Somekh
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 14:2169-2174
The properties of a sputtered film are strongly influenced by the deposition conditions. In this article we try to develop an understanding of the way in which the many parameters associated with sputtering process combine together to give only a few
Publikováno v:
Journal of Materials Science. 30:3968-3972
Microstructures of c-axis oriented YBCO thin films made by high-pressure d.c. sputtering on LaAlO3 and MgO substrates were examined by TEM. The a-axis oriented grains, second phases and micro-twins were frequently observed in the film. The a-axis ori
Publikováno v:
Journal of Applied Physics. 78:344-352
A thin‐film sample of YBa2Cu3O7−δ on MgO was irradiated at room temperature with 50‐keV 2H+ (deuterium) to a dose of 1×1016 ions cm−2. The film was mainly c‐axis textured film, ∼360–420 nm thick, deposited by sputtering on 〈100〉 M
Publikováno v:
Superconductor Science and Technology. 8:459-463
The dynamics of flux vortices in 0.7 mu m thick Nb films have been investigated using a linear array of 2*2 mu m2 Hall probes that can resolve single vortices. The flux vortices move into and out of the centre of the film in bundles. The flux bundle
Autor:
S. Sievers, I.S. Ghosh, V. Fry, R. E. Somekh, S. Hensen, John Gallop, Lesley F. Cohen, M. Lenkens, A.D. Caplin, T.J. Tate
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:1756-1759
A parallel plate resonator technique was employed to investigate changes in the microwave surface impedance between 20 K and 60 K, when d.c. magnetic fields up to 4 T were applied parallel to the YBCO film surface. By using a simple model to describe
Publikováno v:
Journal of Applied Physics. 76:2974-2980
The domain structure of sputtered Co‐Pd multilayer films of varying thickness has been investigated by magnetic force microscopy. The domains appear as stripe domains, typical of perpendicularly oriented films. The size of the domains was strongly
Autor:
P. Przyslupski, P. G. Quincey, Jonathan Radcliffe, G. K. Perkins, A.D. Caplin, R. E. Somekh, T.J. Tate, M.J. Lee, L. F. Cohen, F.M. Saba
Publikováno v:
Journal of Alloys and Compounds. 195:467-470
A Vibrating Sample Magnetometer (VSM) was used to study the magnetic properties of YBa2Cu3O7−x (YBCO) thin films sputtered onto LaAlO3, SrTiO3 and MgO substrates, before and after ion implantation with deuterium and 16O+. By applying the Bean model
Autor:
R. E. Somekh, P. Przyslupski, F.M. Saba, M.J. Lee, Jonathan Radcliffe, P. G. Quincey, John A. Kilner, T.J. Tate, L. F. Cohen
Publikováno v:
Journal of Alloys and Compounds. 195:141-144
Thin films of YBa 2 Cu 3 O 7−δ (YBCO) deposited by sputtering on LaAlO 3 and SrTiO 3 substrates have been implanted with 50 keV 2 H + (deuterium) ions at doses of 1 × 10 12 cm −2 and 1 × 10 16 cm −2 . Depth profiles of the high dose implants
Publikováno v:
Superconductor Science and Technology. 5:S224-S227
The angular dependence of Jc was investigated for c-axis oriented sputtered YBCO films. The observed features can be described neither by a 2D- nor by a 3D-anisotropic Ginzburg-Landau theory. An intrinsic pinning mechanism, effective only within a cr