Zobrazeno 1 - 10
of 109
pro vyhledávání: '"J.W. Hodby"'
Autor:
J.W. Hodby, J. R. Cooper, Peter P. Edwards, Christos Panagopoulos, W. Schmidbauer, Tao Xiang, G. B. Peacock, Ian Gameson
A systematic study of the anisotropic magnetic penetration depth λ for several high-Tc superconductors is presented. It is shown that the existence of the linear term in the low temperature in-plane penetration depth is independent of the number of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c92d22a349bbd480c843f9838c5cbf31
https://doi.org/10.1016/s0921-4534(97)00244-x
https://doi.org/10.1016/s0921-4534(97)00244-x
Autor:
Aswini K. Pradhan, F. R. Wondre, B.M. Wanklyn, Chen Changkang, J.W. Hodby, Andrew T. Boothroyd, S.J. Hazell, Hu Yongle
Y 1 x Pr x )Ba 2 Cu 3 O 7- y is a unique superconductive material for the investigation of the interrelation between crystal structure, chemical composition and physical properties. In order to grow large crystals of high quality, an extensive study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3514a85a9d6058208361d419b592f14
https://doi.org/10.1016/s0022-0248(07)80041-8
https://doi.org/10.1016/s0022-0248(07)80041-8
Publikováno v:
Physica C: Superconductivity. :589-592
High-quality single crystals of YBCO:Ca up to 2×2 cm in size have been grown in non-contaminating yttria or BaZrO 3 crucibles from the eutectic self-flux system with BaF 2 additive. A cluster model is proposed to describe the function of F − ions
Publikováno v:
Physical Review B. 60:698-706
Autor:
Changkang Chen, F. R. Wondre, A. V. Narlikar, Anurag Gupta, S. B. Samanta, Y. Hu, B.M. Wanklyn, J.W. Hodby
Publikováno v:
Philosophical Magazine B. 79:717-728
Scanning tunnelling microscopy and spectroscopy studies, at atomic-level resolution, have been carried out on single crystals of Y1-xPrxBa2Cu3O7 (Y(Pr)-123) to understand the striking differences between the behaviours of Pr-123 and Y-123, both havin
Publikováno v:
Journal of Low Temperature Physics. 117:711-715
The authors study the crystal growth of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} with additives, using ac susceptibility, X-ray diffraction and STM. One specific additive, BaF{sub 2}, dramatically improves both the crystal growth and the superconduc
Publikováno v:
Journal of Materials Science: Materials in Electronics. 10:581-584
CaLaBaCu3O7−y (CLBCO) is a high Tc superconductor with unique tetragonal structure and cross-cationic substitution sites. In this paper, we present our study on the BaO—CuO—CLBCO phase diagram and its application to the crystal growth of CLBCO.
Autor:
Geetha Balakrishnan, D. McK. Paul, J.W. Hodby, S. T. Johnson, A.J.S. Chowdhury, Peter D. Hatton, J.S. Gardner
Publikováno v:
Physica C: Superconductivity. 299:240-248
The relationship between carrier concentration, structure and composition in Bi 2 Sr 2 CaCu 2 O 8+ δ is amongst the most complex of the high- T c superconducting cuprates. In this paper a number of structural subtleties of the system are discussed b
Publikováno v:
Physica C: Superconductivity. 292:218-224
We have investigated the dimensionality of the superconducting state in oxygen reduced YBa2Cu3O6.7 (Tc = 63 K_via measurements of the low-field magnetization M(H) with the field applied parallel to the CuO2-planes. At low temperatures, the c-axis sur
Publikováno v:
Physical Review Letters. 79:1730-1733
We find experimentally that the irreversibility line, H{sub irr}(T) , and the reversible magnetization of twinned YBa{sub 2}Cu {sub 3}O{sub 7} crystals both show 3D XY scaling, which suggests a common origin for both quantities. Analysis of this resu