| Original Articles |
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Mechanical Dissipation at Different Orientation of Magnetic
Field in High-Tc Superconductor
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| LI Jie;ZHU Jinsong;WANG Yening |
| National Laboratory of Solid State Microstructures, Center for Advanced Studies in Science and Technology of Microstructures, Nanjing University, Nanjing 210008 |
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| Cite this article: |
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LI Jie, ZHU Jinsong, WANG Yening 1995 Chin. Phys. Lett. 12 309-312 |
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Abstract The mechanical dissipation of (Bi0.9Pb0.1)2 Sr2 Ca2Cu3O10+y and YBa2Cu3O7-x ceramics were measured as a function of the angle θ between the orientation of the transverse magnetic field and the vibrating direction at fixed temperature and magnetic field with the vibrating reed technique. A relation between Q-1 (or f) and The angle θ, i. e. Δ Q-1 (or Δ f) ~ (Ha cosθ)1.5 was found and this indicated that only the magnetic field component parallel to the vibrating direction Ha cosθ gives rise to the enhancement of internal friction and resonant frequency in ceramic sample. The anisotropic deformation of flux-line-lattice is used to explain the observed results.
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| Keywords:
74.60.Ge
62.40.+i
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Published: 01 May 1995
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| PACS: |
74.60.Ge
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62.40.+i
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(Anelasticity, internal friction, stress relaxation, and mechanical resonances)
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