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References (4)
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H. Nishihara, H. Nakano, K. Hayashi (1994)
Radio-frequency acoustic powder echoes in high-Tc YBaCuO ceramics around the H-T phase boundaryPhysica C-superconductivity and Its Applications, 235
- Publisher
- Springer Journals
- Copyright
- Copyright
- Subject
- Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
- ISSN
- 0022-2291
- eISSN
- 1573-7357
- DOI
- 10.1007/BF00768519
- Publisher site
- See Article on Publisher Site
Abstract
Temperature dependence of intensity of rf acoustic powder echoes is studied for powdered samples of Bi2Sr2CaCu2O8 ceramics around the H-T phase boundary and compared with combined magnetization data in field-cooled and zero-field cooled conditions for the same powder. Rf acoustic powder echoes are found to vanish at HC2 rather than Hirr determined from the magnetization data and we conclude that the intrinsic pinning is important for the observation of rf acoustic powder echoes in the high-TC Bi2Sr2CaCu2O8 ceramics. Hysteretic behavior observed around HC2, suggests an existence of the first-order phase transition at the HC2 line.
Journal
Journal of Low Temperature Physics – Springer Journals
Published: Nov 24, 2004