Zobrazeno 1 - 10 of 18 pro vyhledávání: '"J. M. Redwing"'
1
High-field superconductivity in alloyed MgB2 thin films
Autor: V. BRACCINI, A. GUREVICH, M. C. JEWELL, C. B. EOM, D. C. LARBALESTIER, A. POGREBNYAKOV, Y. CUI, B. T. LIU, Y. F. HU, J. M. REDWING, QI LI, X. X. XI, R. K. SINGH, R. GANDIKOTA, J. KIM, B. WILKENS, N. NEWMAN, J. ROWELL, B. MOECKLY, V. FERRANDO, C. TARANTINI, D. MARR, M. PUTTI, C. FERDEGHINI, E. HAANAPPEL, VAGLIO, RUGGERO
We investigated the effect of alloying on the upper critical field Hc2 for 12 MgB2 films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, finding a significant Hc2 enhancement in C-alloyed films, and an anomalous upwa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3730::d9002cd2add1e0098ddddf2795c1bd1c
http://hdl.handle.net/11588/112432
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2
Modification of critical current density of MgB2 films irradiated with 200 MeV Ag ions
Autor: R. J. Choudhary, Alexej Pogrebnyakov, D. Kanjilal, Xiaoxing Xi, R. Ramesh, T. Venkatesan, S. R. Shinde, Haimei Zheng, J. M. Redwing, Qi Li, Joshua Higgins, S. B. Ogale, V. N. Kulkarni, S. Y. Xu
Publikováno v: Applied Physics Letters. 84:2352-2354
The effect of 200 MeV Ag ion irradiation on the temperature and field dependence of critical current density (JC) of high quality MgB2 thin films is studied. Substantial increase in JC is observed over a certain field range for the film irradiated at
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee2fa0e7dfdaf53e0275227e0ec33d2b
https://doi.org/10.1063/1.1687982
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4
Ni and Ti Schottky barriers on n-AlGaN grown on SiC substrates
Autor: S. S. Lau, K. S. Boutros, Q. J. Xing, J. M. Redwing, D. Qiao, L. S. Yu
Publikováno v: Applied Physics Letters. 73:238-240
The electrical characteristics of Ni and Ti Schottky barriers on n-Al0.15Ga0.85N on SiC were investigated. We report that the barrier height for Ni on n-Al0.15Ga0.85N was about 1.26 eV and about 1 eV or less for Ti. These barrier heights are about 0.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f74706efbaa98f50e8a3e4084f4c140
https://doi.org/10.1063/1.121767
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7
High-field superconductivity in alloyedMgB2thin films
Autor: Qi Li, Alexej Pogrebnyakov, J. E. Giencke, Marina Putti, C. B. Eom, Rakesh Kumar Singh, B. J. Wilkens, Y. Cui, Valeria Braccini, J. M. Rowell, Y. F. Hu, J. M. Redwing, Carlo Ferdeghini, V. Ferrando, E. Haanappel, Chiara Tarantini, Daniele Marré, Nathan Newman, R. Gandikota, Ruggero Vaglio, B. T. Liu, B. H. Moeckly, M. C. Jewell, X. X. Xi, Alex Gurevich, David C. Larbalestier, Jeonghwan Kim
Publikováno v: Physical Review B. 71
We investigated the effect of alloying on the upper critical field ${H}_{c2}$ for 12 $\mathrm{Mg}{\mathrm{B}}_{2}$ films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, finding a significant ${H}_{c2}$ enhancement in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0696b5b16bec62a133de0ceb0dc18af
https://doi.org/10.1103/physrevb.71.012504
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8
High upper critical field and irreversibility field in MgB2 coated-conductor fibers
Autor: Pasquale Orgiani, Alexej Pogrebnyakov, J. Chen, Xiaoxing Xi, J. M. Redwing, Qing Rong Feng, Charles H. Mielke, V. Ferrando, Qi Li, Chang-Beom Eom, J. E. Giencke, Jonathan B. Betts
Publikováno v: Applied physics letters 87 (2005): 252509-1–252509-3. doi:10.1063/1.2149289
info:cnr-pdr/source/autori:V.Ferrando; P.Orgiani; A.Pogrebnyakov; J.Chen; Qi Li; J.M.Redwing; X.X.Xi; J.Giencke; C.B.Eom; Q.R.Feng; J.Betts; C.Mielke;/titolo:High upper critical field and irreversibility field in MgB2 coated-conductor fibers/doi:10.1063%2F1.2149289/rivista:Applied physics letters/anno:2005/pagina_da:252509-1/pagina_a:252509-3/intervallo_pagine:252509-1–252509-3/volume:87
We report on structural and superconducting properties of round MgB2 coated-conductor fibers deposited by hybrid physical-chemical vapor deposition on SiC fibers. The coating is polycrystalline and composed of elongated crystallites with dimensions l
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8c9550bf9b067ec2fd5480e7afeafed
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9
Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening
Autor: A V, Pogrebnyakov, J M, Redwing, S, Raghavan, V, Vaithyanathan, D G, Schlom, S Y, Xu, Qi, Li, D A, Tenne, A, Soukiassian, X X, Xi, M D, Johannes, D, Kasinathan, W E, Pickett, J S, Wu, J C H, Spence
Publikováno v: Physical review letters. 93(14)
We report a systematic increase of the superconducting transition temperature T(c) with a biaxial tensile strain in MgB2 films to well beyond the bulk value. The tensile strain increases with the MgB2 film thickness, caused primarily by the coalescen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2d04916b82d420b034f819f2e69d926a
https://pubmed.ncbi.nlm.nih.gov/15524834
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10
Thickness dependence of the properties of epitaxial MgB2 thin films grown by hybrid physical-chemical vapor deposition
Autor: V. Vaithyanathan, Qiang Li, J. E. Jones, Alexej Pogrebnyakov, Darrell G. Schlom, Xiaoxing Xi, S. Y. Xu, J. M. Redwing
We have studied the effect of deposition rate and layer thickness on the properties of epitaxial MgB2 thin films grown by hybrid physical-chemical vapor deposition on 4H-SiC substrates. The MgB2 film deposition rate depends linearly on the concentrat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61594d522924fc98267f9b3da4441ebd
http://arxiv.org/abs/cond-mat/0304164
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