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Transition from ela...
Transition from elastic to dissipative motion in a magnet-high-Tc superconductor system
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- Johansen, T.H. (författare)
- Department of Physics, University of Oslo, Oslo, Norway
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- Bratsberg, H. (författare)
- Department of Physics, University of Oslo, Oslo, Norway
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- Yang, Z.J. (författare)
- Department of Physics, University of Oslo, Oslo, Norway
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- Guo, S.J. (författare)
- Luleå tekniska universitet
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- Loberg, Bengt (författare)
- Luleå tekniska universitet
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(creator_code:org_t)
- AIP Publishing, 1991
- 1991
- Engelska.
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Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 70:12, s. 7496-7499
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Using quasistatic harmonic excitations, we have measured the lateral force between a permanent magnet and a Bi-based ceramic high-Tc superconductor (HTSC) for lateral displacement amplitudes down to 1 µm. We find clear evidence for a transition from elastic (nondissipative) to inelastic interaction, and attribute the effect to flux pinning. The crossover amplitude can easily reach several micrometers, with the consequence that the lateral disturbance of a levitated magnet will decay to this amplitude, whereas further damping will be extremely slow. For applications of HTSCs in magnetic bearing systems this can be a very relevant aspect of the interaction, and it can set the limit for precision positioning of levitated objects
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- Engineering Materials
- Materialteknik
Publikations- och innehållstyp
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- art (ämneskategori)
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