Zobrazeno 1 - 10
of 150
pro vyhledávání: '"J. Brynestad"'
Publikováno v:
Physical Review B. 51:3783-3790
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8ecd29903b345bc8f4fbb5ace583fff
https://doi.org/10.1103/physrevb.51.3783
https://doi.org/10.1103/physrevb.51.3783
Publikováno v:
Journal of Materials Research. 9:2510-2518
The synthesis of Bi2−xPbxSr2Ca2Cu3O10 (Bi2223) powders from a freeze dried nitrate precursor is reported here. We examine the composition and morphology of the precursor material, describe the chemistry and kinetics of product formation, and evalua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6246773db842a4a336b365ae2b563604
https://doi.org/10.1557/jmr.1994.2510
https://doi.org/10.1557/jmr.1994.2510
Autor:
J. R. Mayotte, J. Brynestad, Patrick M Martin, Eliot D. Specht, D. M. Kroeger, Robert K. Williams
Publikováno v:
Journal of Applied Physics. 76:3673-3678
In the course of investigating synthesis routes, stability information was developed for YBa2Cu3O7−x, Y2Ba4Cu7O15−x, and YBa2Cu4O8. The results were obtained between ∼900 and 1040 °C and involve oxygen pressures between 10 and 145 atm. The obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee98fa6456dc76cbf9cf154aba6030ff
https://doi.org/10.1063/1.357431
https://doi.org/10.1063/1.357431
Autor:
James R. Thompson, David K. Christen, Yang Ren Sun, Mariappan Parans Paranthaman, H. R. Kerchner, J. Brynestad
Publikováno v:
Physical Review B. 50:3330-3336
Magnetic studies on polycrystalline HgCa[sub 2]CuO[sub 4+[delta]] superconductors reveal pronounced pinning by the grain surfaces at low temperatures over a wide range of magnetic fields. The response to small ac fields shows that up to 80% of the wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61bd2cf7f47c788c213597abed2414ef
https://doi.org/10.1103/physrevb.50.3330
https://doi.org/10.1103/physrevb.50.3330
Publikováno v:
Applied Superconductivity. 2:359-365
Polycrystalline HgBa2CuO4 + δ (hereafter denoted as Hg-1201) superconductors were prepared by solid state reaction of stoichiometric quantities of HgO and Ba2CuO3 precursors in an evacuated quartz tube. The “as-synthesized” Hg-1201 samples had a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28df617c1e5fc3ab93d437a78260124d
https://doi.org/10.1016/0964-1807(94)90021-3
https://doi.org/10.1016/0964-1807(94)90021-3
Autor:
Yang Ren Sun, Mariappan Parans Paranthaman, James R Thompson, J. G. Ossandon, David K. Christen, J. Brynestad, Bryan C. Chakoumakos
Publikováno v:
Physical Review B. 48:14031-14034
The presence of strong vortex fluctuation effects in two families of layered high-temperature superconductors (${\mathrm{HgBa}}_{2}$${\mathrm{CuO}}_{4+\mathrm{\ensuremath{\delta}}}$ and ${\mathrm{Tl}}_{2}$${\mathrm{Ca}}_{2}$${\mathrm{Ba}}_{2}$${\math
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81a4ff837addb18bbe10bd8aa2fccbf0
https://doi.org/10.1103/physrevb.48.14031
https://doi.org/10.1103/physrevb.48.14031
Autor:
James R. Thompson, Robert K. Williams, Yang Ren Sun, Zhong Lin Wang, D. M. Kroeger, J. Brynestad
Publikováno v:
Physical Review B. 48:9726-9734
Magnetic-susceptibility and grain-boundary-chemistry data were obtained on dense YBa[sub 2]Cu[sub 4]O[sub 8] (Y 1:2:4) samples. Transmission-electron microscopy showed that the grain boundaries were free of second phases and the dislocation density w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cce8160a143882394bbb93becdb4b51d
https://doi.org/10.1103/physrevb.48.9726
https://doi.org/10.1103/physrevb.48.9726
Publikováno v:
Physica C: Superconductivity. 213:271-275
Bulk superconducting samples of HgBa2CuO4+δ (hereafter denoted as Hg-1201) were prepared by solid state reaction of stoichiometric quantities of HgO and Ba2CuO3 precursors. The “as-synthesized” Hg-1201 samples had a Tc of 95 K, as defined by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f8bcb7beec26eb31e9188c489f94189
https://doi.org/10.1016/0921-4534(93)90442-s
https://doi.org/10.1016/0921-4534(93)90442-s
Publikováno v:
Journal of Materials Research. 6:2519-2522
Using a highly-spatially-resolved mechanical properties microprobe, the Young's modulus and hardness of bulk YBa2Cu3O7−x (1:2:3) and YBa2Cu4O8 (1:2:4) have been determined. The Young's modulus of a superconductor is an important parameter in determ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb8cd187c8587c95021aac64882a8f8f
https://doi.org/10.1557/jmr.1991.2519
https://doi.org/10.1557/jmr.1991.2519
Publikováno v:
Physica C: Superconductivity. 180:337-350
The grain boundary segregation behavior of stoichiometric and off-stoichiometric YBa2Cu3O7−x has been studied with analytical electron microscopy (AEM) to complement previous results obtained with Auger electron spectroscopy (AES). It was observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c7649e99d9907623f2ea489aa6226aa
https://doi.org/10.1016/0921-4534(91)90545-a
https://doi.org/10.1016/0921-4534(91)90545-a