Abstract
Muon spin relaxation (μSR) data taken at LAMPF on ac-axis oriented fine powder sample of YBa2Cu3O7−δ (YBCO) embedded in epoxy are analyzed for relaxation rate anisotropy. Clear differences beyond simple magnetic field penetration depth anisotropy are observed forB‖c andB c. The low-temperature anisotropy ratio is consistent with oriented ceramic data. Small crystallite size and anisotropic flux pinning characteristics are suggested as the fundamental cause of the additional effects.
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Lichti, R.L., Adams, T.R., Cooke, D.W. et al. Anisotropy inc-axis oriented YBa2Cu3O7−δ . Hyperfine Interact 63, 73–79 (1991). https://doi.org/10.1007/BF02395987
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DOI: https://doi.org/10.1007/BF02395987