Flux Pinning by Precipitates in Melt-Processed YBa2Cu3Ox — A Cavity Model
YBa2Cu3Ox has been processed by the solid-liquid melt growth method. Extremely small Y2BaCuO5 precipitates on the order of 10–100 nm have been found to be finely dispersed in the sample matrices. Magnetization measurements have shown that these samples exhibit much higher flux pinning strength compared to that of the traditionally melt-textured materials. A cavity model is used to interpret the observed pinning behavior.
KeywordsAttractive Force Critical Current Density Vortex Line Spherical Cavity Cylindrical Cavity
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- 1.Donglu Shi, S. Sengupta, J. S. Luo, C. Varanasi, and P. J. McGinn, Physica C “Extremely fine precipitates and flux pinning in melt-processed YBa2Cu3Ox,” 213:179 (1993).Google Scholar
- 2.C. Varanasi, S. Sengupta, P. J. McGinn, and D. Shi, “An alternative method to introduce fine Y2BaCuOx precipitates into YBa2Cu3Ox with enhanced flux pinning,” 2:117 (1994).Google Scholar
- 8.G. S. Mkrtchyan, and V. V. Shmidt, “Interaction between cavity and a vortex in s superconductor of the second kind,” Sov. Phys. JETP 34:195 (1972).Google Scholar