Abstract
We have studied the effect of nonsuperconducting inclusions on the magnetization relaxation in melt-processed RBa2Cu3O7-δ (R=Nd and Yb) bulk superconductor in a high - temperature region (77≤T ≤90 K). It is found that nonsuperconducting inclusions are mainly effective in reducing the normalized relaxation rate S (≡ -d ln M/d ln t) at low fields [birr(≡ μ0Ha/Birr)≲0.1] and at high fields (birr≳0.4). A suppression in S is observed in an intermediate field region (0.1≲birr≲0.4) for the samples exhibiting secondary peak effect, suggesting a relation between the peak and the suppression.
| Original language | English |
|---|---|
| Article number | 064518 |
| Pages (from-to) | 645181-645187 |
| Number of pages | 7 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 64 |
| Issue number | 6 |
| Publication status | Published - 2001 Aug 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Mochida, T., Chikumoto, N., & Murakami, M. (2001). Effect of nonsuperconducting secondary inclusions on the magnetization relaxation in melt-processed RBa2Cu3O7-δ (R = Nd and Yb) bulk superconductors at high temperatures. Physical Review B - Condensed Matter and Materials Physics, 64(6), 645181-645187. [064518].