Zobrazeno 1 - 10
of 95
pro vyhledávání: '"R. T. Kampwirth"'
Publikováno v:
Physica B: Condensed Matter. 221:77-85
A series of off-specular diffuse scattering measurements were performed by scanning the detector parallel to the sample surface during growth of platinum films on polished silicon substrates. During early stage of island growth, we observe a halo of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dee22034870f577737b12ab6165b2347
https://doi.org/10.1016/0921-4526(95)00908-6
https://doi.org/10.1016/0921-4526(95)00908-6
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:1954-1957
Using a two-zone thallium vapor transport furnace and a thick film ink process, we have successfully made superconducting films 10 to 50 /spl mu/m thick on a variety of substrates. Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ and Bi/sub 0.22/Sr/sub 1.6/Ba/sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c9db9e7a3f6ce4e6f9af0207c33b1d5
https://doi.org/10.1109/77.402967
https://doi.org/10.1109/77.402967
Publikováno v:
IEEE Transactions on Applied Superconductivity. 3:1246-1252
The authors have measured the critical current density (J/sub c/) of two NbN films (500-AA and 1550-AA thick) as a function of temperature in magnetic fields up to 25 T using transport measurements. In both films, the functional form of the volume pi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9f23980d09e3aa443ede550fde7f945
https://doi.org/10.1109/77.233398
https://doi.org/10.1109/77.233398
Autor:
X. K. Wang, Simon N. Williams, D. Segel, Pulak Dutta, Hiroshi Kajiyama, Y. Lin, Robert P. H. Chang, S. R. Maglic, Kenneth E. Gray, S. J. Lee, R. T. Kampwirth, T. Roberts, E. D. Rippert, John B Ketterson, M. C. Shih, J. Q. Zheng
Publikováno v:
Journal of Applied Physics. 72:4798-4804
Using a specially designed off‐axis faced magnetron sputtering chamber we have performed in situ x‐ray diffraction studies of the growth of YBa2Cu3Ox films using a synchrotron light source. The orientation and rocking curve width were studied as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03831704bb7cb9548da12ec025d3c8f5
https://doi.org/10.1063/1.352093
https://doi.org/10.1063/1.352093
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 10:1600-1603
The type and partial pressure of oxidant mixed with argon can affect the selective resputtering of Bi in composite-target, magnetron-sputtered Bi-Sr-Ca-Cu-O films. Comparative studies using oxygen and ozone show that ozone is a more potent oxidant, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::032a684b7719c14aafce1928e986b07e
https://doi.org/10.1116/1.578051
https://doi.org/10.1116/1.578051
Publikováno v:
Europhysics Letters (EPL). 19:27-32
A number of recent theories predict scaling laws for the roughening of growing thin films. We present a powerful new experimental technique for studying the internal morphology of films exhibiting roughening, together with preliminary results first d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a295cf3c664fbffb37a77624573290a4
https://doi.org/10.1209/0295-5075/19/1/005
https://doi.org/10.1209/0295-5075/19/1/005
Publikováno v:
Journal of Applied Physics. 70:3867-3875
We present studies using a dc magnetron in an on‐axis configuration to sputter Bi‐Sr‐Ca‐Cu‐O films from a composite target. These studies show that bismuth can be preferentially resputtered. The influence of ozone, molecular oxygen, and tot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::756465f512b050dd7b4b101cd51e95fe
https://doi.org/10.1063/1.349193
https://doi.org/10.1063/1.349193
Autor:
Kenneth E. Gray, Darrin S. Richeson, R. T. Kampwirth, J.C. Smith, Tobin J. Marks, D.H. Kim, J. Talvacchio, M. Eddy, Joonhee Kang
Publikováno v:
Physica C: Superconductivity. 177:431-437
For H‖c-axis, the magnetic field induced broadening of the resistive transitions of high-Tc superconductors (HTS) is shown to depend strongly on the Cu-O layer spacing. For the highly anisotropic HTS, we show experimental evidence that flux motion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d39f97b460af198147ad46e48904d63e
https://doi.org/10.1016/0921-4534(91)90500-x
https://doi.org/10.1016/0921-4534(91)90500-x
Publikováno v:
IEEE Transactions on Magnetics. 27:1383-1386
The absence of a Lorentz-force dependence on dissipation in the highly anisotropic high-temperature superconductor Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub x/ has been measured over a wide range of current densities in broadened resistive transitions, curr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1773420bb12594bd5ca73b94a45f3247
https://doi.org/10.1109/20.133442
https://doi.org/10.1109/20.133442
Autor:
Harald W. Weber, Dean J. Miller, R. T. Kampwirth, Kenneth E. Gray, Damian P. Hampshire, R. Herzog, J.M. Murduck
Publikováno v:
Physica C: Superconductivity. 174:340-344
The critical current density, J c in granular NbN/AlN multilayer films shows a sharp crossover with reduced magnetic field, b ≡ H / H c 2 where H c2 is the upper critical field, from the (1− b ) 2 dependence associated with bulk flux pinning at l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89d374613f2d9df23f70f58c03711f22
https://doi.org/10.1016/0921-4534(91)91566-m
https://doi.org/10.1016/0921-4534(91)91566-m