Extremely fine precipitates and flux pinning in melt-processed YBa2Cu3O
作者： Donglu Shi , S. Sengupta , J.S. Luo , C. Varanasi , P.J. McGinn
DOI: 10.1016/0921-4534(93)90774-K
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摘要: Abstract Extremely fine Y 2 BaCuO 5 (211) precipitates (∼ 100 A) have been observed by transmission electron microscopy in melt-processed YBa Cu 3 O x (123). Magnetization measurements performed on samples with and without these ultrafine 211 particles. Our results show that there is a strong correlation between the microstructure flux pinning behavior. The J c values significantly increased wide range of temperature field, indicating can act as centers 123 system.
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W. Kwok, U. Welp, G. Crabtree, K. Vandervoort, R. Hulscher, J. Liu, Direct observation of dissipative flux motion and pinning by twin boundaries in YBa 2 Cu 3 O 7-δ single crystals Physical Review Letters. ,vol. 64, pp. 966- 969 ,(1990) , 10.1103/PHYSREVLETT.64.966
Z. L. Wang, A. Goyal, D. M. Kroeger, Structural and chemical disorder near the Y2BaCuO5/YBa2Cu3O7- delta interface and its possible relation to the flux-pinning behavior in melt-textured YBa2Cu3O7- delta. Physical Review B. ,vol. 47, pp. 5373- 5382 ,(1993) , 10.1103/PHYSREVB.47.5373
Masato Murakami, Mitsuru Morita, Noboru Koyama, Flux Creep in HighJcYBa2Cu3O7Crystals Japanese Journal of Applied Physics. ,vol. 28, pp. L1754- L1756 ,(1989) , 10.1143/JJAP.28.L1754
S. Sengupta, Donglu Shi, Z. Wang, A.C. Biondo, U. Balachandran, K.C. Goretta, Effect of Y2BaCuOx precipitates on flux pinning in melt-processed YBa2Cu3Ox Physica C-superconductivity and Its Applications. ,vol. 199, pp. 43- 49 ,(1992) , 10.1016/0921-4534(92)90538-N
Masato Murakami, Mitsuru Morita, Kenji Doi, Katsuyoshi Miyamoto, A New Process with the Promise of HighJcin Oxide Superconductors Japanese Journal of Applied Physics. ,vol. 28, pp. 1189- 1194 ,(1989) , 10.1143/JJAP.28.1189
Donglu Shi, Upper critical fields of YBa2Cu3O7−δwith 60 and 90 K superconductivity and the weak link effect in the system Journal of Applied Physics. ,vol. 64, pp. 4624- 4626 ,(1988) , 10.1063/1.341241
E. M. Chudnovsky, Pinning by oxygen vacancies in high-Tcsuperconductors Physical Review Letters. ,vol. 65, pp. 3060- 3062 ,(1990) , 10.1103/PHYSREVLETT.65.3060
Donglu Shi, M. M. Fang, Justin Akujieze, Ming Xu, J. G. Chen, Carlo Segre, High critical current density in grain‐oriented bulk YBa2Cu3Oxprocessed by partial melt growth Applied Physics Letters. ,vol. 57, pp. 2606- 2608 ,(1990) , 10.1063/1.104188
S. Jin, T. H. Tiefel, R. C. Sherwood, M. E. Davis, R. B. van Dover, G. W. Kammlott, R. A. Fastnacht, H. D. Keith, High critical currents in Y‐Ba‐Cu‐O superconductors Applied Physics Letters. ,vol. 52, pp. 2074- 2076 ,(1988) , 10.1063/1.99751
C. P. Bean, Magnetization of hard superconductors Physical Review Letters. ,vol. 8, pp. 250- 253 ,(1962) , 10.1103/PHYSREVLETT.8.250