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Additional effect of Ag and 211 phase on thermal expansion of REBaCuO bulk superconductor (RE=Sm, Y)
- Source :
- Cryogenics. 43:477-481
- Publication Year :
- 2003
- Publisher :
- Elsevier BV, 2003.
-
Abstract
- The anisotropic thermal expansion Δ L / L was examined for melt-processed REBaCuO(Ag) bulk composites (RE=Sm, Y) as functions of not only the contents of the RE 2 BaCuO 5 second phase but also Ag metal added to the highly oriented REBa 2 Cu 3 O 7 matrix. The Δ L / L | c values in the c -direction of REBaCuO(Ag) bulks are about 1.5–1.8 times as large as the Δ L / L | ab values in the ab -plane. Δ L / L increases with increasing Ag content in both directions but Δ L / L | c is by far more sensitive to the Ag content. The resultant compressive strain due to Ag particles in the c -direction through the melt-processing was estimated and its possible contribution for the improvement of the superconducting characteristics of the matrix was discussed.
Details
- ISSN :
- 00112275
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- Cryogenics
- Accession number :
- edsair.doi...........169e0e481ab2074b813224909ee5c06a
- Full Text :
- https://doi.org/10.1016/s0011-2275(03)00124-3