Zobrazeno 1 - 10
of 169
pro vyhledávání: '"D. M. Kroeger"'
Autor:
Donglu Shi, Y. Xu, Srivatsan Sathyamurthy, Mariappan Parans Paranthaman, Patrick M Martin, D. M. Kroeger, Jie Lian, Amit Goyal, N A Rutter, L. M. Wang
Publikováno v:
Journal of the American Ceramic Society. 87:1669-1676
YBa2Cu3O7 (YBCO) films were fabricated via a fluorinefree metal organic deposition (MOD) method followed by high-temperature, low oxygen partial pressure annealing. Trimethyl acetate salts of copper, yttrium, and barium hydroxide were used as the pre
Publikováno v:
Superconductor Science and Technology. 17:1295-1302
Analytical transmission electron microscopy was used to identify the presence of a self-limiting reaction layer developed within rolling-assisted biaxially textured Ni–3 at.% W substrates during the pulsed laser deposition of thick YBa2Cu3O7−δ (
Autor:
Dominic F. Lee, Albert A. Gapud, Keith J. Leonard, Sylvester W Cook, H. Hsu, Patrick M Martin, Mariappan Parans Paranthaman, F.A. List, J Yoo, Lee Heatherly Jr, D. M. Kroeger, Amit Goyal
Publikováno v:
Superconductor Science and Technology. 17:1209-1214
The growth of 0.9–1.0 µm thick Y Ba2Cu3O7−δ (YBCO) films on biaxially textured Ni–3 at.% W (NiW) substrates using the BaF2 ex situ process was investigated at reduced pressures. By varying the water vapour pressure (PH2O), Y–BaF2–Cu–O (
Autor:
J Yoo, D. M. Kroeger, Amit Goyal, F.A. List, Lee Heatherly Jr, H. Hsu, Keith J. Leonard, Dominic F. Lee, Mariappan Parans Paranthaman, N A Rutter
Publikováno v:
Journal of Materials Research. 19:1281-1289
The effects of conversion parameters on transport properties of YBa2Cu3O7-δ (YBCO) films on rolling assisted biaxially textured substrates (RABiTS) in the BaF2 ex situ process were investigated for total pressures Ptotal between 0.1 and 1.3 atm, wat
Autor:
F.A. List, D. M. Kroeger, Amit Goyal, Dominic F. Lee, Lee Heatherly Jr, N A Rutter, C. E. Vallet
Publikováno v:
Superconductor Science and Technology. 17:527-531
Use of many Ni-based and Cu-based alloys requires deposition of a Ni overlayer prior to the deposition of the seed layer in order to obtain better epitaxy. In this work, Ni overlayers have been deposited by DC sputtering on biaxially textured NiW and
Autor:
Patrick M Martin, Lee Heatherly Jr, Mariappan Parans Paranthaman, Dominic F. Lee, Sylvester W Cook, Srivatsan Sathyamurthy, J Yoo, F.A. List, Keith J. Leonard, Amit Goyal, N A Rutter, D. M. Kroeger
Publikováno v:
Superconductor Science and Technology. 17:386-394
A reel-to-reel furnace equipped with seven transverse flow modules has been developed to continuously process ex situ BaF2 precursor coated conductors. Experimental results have revealed that as the precursor thickness increases, the processing param
Autor:
Keith J. Leonard, F.A. List, Lee Heatherly Jr, Srivatsan Sathyamurthy, D. M. Kroeger, Eliot D. Specht
Publikováno v:
Physica C: Superconductivity. 391:350-362
In situ X-ray diffraction has been used to study the conversion of ∼3000 A thick, evaporated barium fluoride precursor films to YBCO on buffered metal substrates for a range of conversion time, ramp rate, water vapor pressure, oxygen pressure, and
Publikováno v:
Journal of Materials Research. 18:1723-1732
The microstructural changes associated with the reduced dependence of critical current density (Jc) versus thickness of thick, epitaxial YBa2Cu3O7–δ (YBCO) films on rolling-assisted biaxially textured substrates (RABiTS) were investigated. Pulsed
Autor:
J.W. Jones, S. Kang, B. W. Kang, D. M. Kroeger, Keith J. Leonard, Amit Goyal, Mariappan Parans Paranthaman, Dominic F. Lee, N A Rutter
Publikováno v:
Journal of Materials Research. 18:1109-1122
The change in microstructure associated with the decrease in critical current density (Jc) of Yba2Cu3O7−δ (YBCO) films with increasing thickness was examined. Samples of pulse laser deposited YBCO films varying in thickness from 0.19 to 3.0 μm on
Autor:
Y. Xu, Mariappan Parans Paranthaman, Patrick M Martin, Donglu Shi, Srivatsan Sathyamurthy, N A Rutter, D. M. Kroeger, Amit Goyal
Publikováno v:
Journal of Materials Research. 18:677-681
Superconducting Yba2Cu3O7−δ (YBCO) films with critical transition temperature Tc(0) of 90 K were fabricated via a fluorine-free, metal trimethylacetate based sol-gel route. Precursor films were spin-coated onto single-crystal (001) LaAlO3 (LAO) an