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Akademický článek

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Influence of neutron irradiation on the superconducting properties of BiSCCO-tapes containing different amounts of uranium

Autor: Y.C. Guo, Harald W. Weber, A. Gandini, S. Tönies, R. Sawh, Roy Weinstein, Shi Xue Dou, Y.T. Ren, D. Milliken

Publikováno v: Physica C: Superconductivity. :1427-1430

BiSCCO-2223 tapes were produced by the powder-in-tube method; however, prior to processing, small amounts of uranium oxide were added to the precursor powders. Samples containing various amounts of 235 U are investigated and compared with undoped sam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::231b00860b973a8d09795a593d1d4907
https://doi.org/10.1016/s0921-4534(00)00966-7

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Properties of HTS for successful U/n processing

Autor: Y.T. Ren, Wolfgang Bieger, Harald W. Weber, Michael Eisterer, W. Hennig, R. Sawh, Tadashi Mochida, Noriko Chikumoto, Roy Weinstein, Shi Xue Dou, S. Tönies, Masato Murakami, G. Krabbes, A. Gandini, D. Milliken, Naomichi Sakai

Publikováno v: Physica C: Superconductivity. :1415-1418

Insertion of uranium into HTS precursor powders prior to texturing, and irradiation with thermal neutrons after texturing is called U/n processing. Damage caused by uranium fission fragments has been extensively studied for pinning center behavior in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b9889fb46842d6df6090f3dbe1f3e46
https://doi.org/10.1016/s0921-4534(00)00960-6

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Raman study of the laser-induced chemical instabilities of BaCuO2, Ba2Cu3O5.9, and Ba2CuO3

Autor: C.W. Chu, Y. Y. Sun, Y.Y. Xue, Y. Q. Wang, H. Chang, Y.T. Ren

Publikováno v: Physica C: Superconductivity. 252:333-338

The chemical transformations of three barium cuprates, BaCuO 2 , Ba 2 Cu 3 O 5.9 , and Ba 2 CuO 3 , which are the precursors and decomposition products of the Ba-based family of superconducting cuprates, were studied through their Raman bands under v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9af3603bf85c08b67b9637689139d4a6
https://doi.org/10.1016/0921-4534(95)00456-4

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Damage caused by magnetic pressure at high trapped field in quasi-permanent magnets composed of melt-textured YBaCuO superconductor

Autor: C.C. Foster, Y.T. Ren, R. Sawh, Jiarui Liu, Roy Weinstein

Publikováno v: Physica C: Superconductivity. 251:15-26

Quasi-permanent magnets made of melt-textured YBa2Cu3O7 - delta (MT-YBCO) superconductor can now trap multi-tesla fields, B sub t. The interaction of the trapped field and the critical current causes an outward pressure, proportional to B sub t (2),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2c1b49a18efe8fbd17c3bc9eeab439a
https://doi.org/10.1016/0921-4534(95)00398-3

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Raman studies on BaCuO2, Ba2CuO3 and Ba2Cu3O5.9

Autor: H. Chang, Y.Y. Xue, Y. Q. Wang, C.W. Chu, Y. Y. Sun, Y.T. Ren

Publikováno v: Physica C: Superconductivity. 228:383-388

The Raman spectra of several as-synthesized barium cuprates, BaCuO 2 , Ba 2 CuO 3 and Ba 2 Cu 3 O 5.9 , and annealed Ba 2 Cu 3 O 5.9 were studied in this work. Characteristic Raman bands were found at 633, 563 and 592 cm -1 , respectively. They were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ccfd0415ca8c5649bd9a9dd26594115
https://doi.org/10.1016/0921-4534(94)90430-8

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Raman and thermal-stability studies on annealed HgBa2CuO4+δ

Autor: Y.Y. Xue, Y.T. Ren, H. Chang, Q. Xiong, C.W. Chu

Publikováno v: Physica C: Superconductivity. 226:209-215

We have studied as-synthesized, vacuum-annealed and high-pressure oxygen annealed HgBa 2 CuO 4+δ (Hg-1201) using Raman scattering. The apical-oxygen vibrational frequencies showed a slight but systematic shift (590, 591 and 587 cm -1 ), in agreement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::06393cadde83063477a9942acda5f1a8
https://doi.org/10.1016/0921-4534(94)90196-1

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Thermopower and resistivity measurements on oxygen-annealed HgBa2CaCu2O6+δ

Autor: Y.Y. Sun, R.L. Meng, Feng Chen, Zhao Huang, J.A. Clayhold, Y.T. Ren, X.D. Qiu, Ching-Wu Chu, Y.Y. Xue

Publikováno v: Physica C: Superconductivity. 217:6-10

We have measured the thermoelectric power and resistivity of the 120 K superconductor HgBa 2 CaCu 2 O 6+δ (Hg-1212) as a function of temperature and oxygen annealing. Before annealing the Seebeck coefficient is moderate and positive, suggesting that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f863f7c1784d13785137471b47932b4
https://doi.org/10.1016/0921-4534(93)90787-q

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Micro-Raman scattering on superconducting HgBa2Can−1CunO2n+2+δ (n = 1, 2, 3) ceramics

Autor: H. Chang, Y. Q. Wang, Q. Xiong, R. L. Meng, Y.Y. Xue, C.W. Chu, Y.T. Ren, Y. Y. Sun

Publikováno v: Physica C: Superconductivity. 217:273-279

We have measured the micro-Raman scattering on the mercury-based cuprate superconductors HgBa 2 CuO 4+δ (Hg-1201), HgBa 2 CaCu 2 O 6+δ (Hg-1212) and HgBa 2 Ca 2 Cu 3 O 8+δ (Hg-1223) in ceramic forms. The observed Raman spectra showed similar featu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c915e1c650a0e40de620a3a6f01fa02
https://doi.org/10.1016/0921-4534(93)90329-o

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