WFRF:(Bengt H. S.)
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- Johansen, T.H.Department of Physics, University of Oslo, Oslo, Norway (author)
Transition from elastic to dissipative motion in a magnet-high-Tc superconductor system
- Article/chapterEnglish1991
Publisher, publication year, extent ...
- AIP Publishing,1991
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:ltu-15407
- https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15407URI
- https://doi.org/10.1063/1.350365DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Godkänd; 1991; 20080527 (cira)
- 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
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
- Engineering Materials
- Materialteknik
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- Bratsberg, H.Department of Physics, University of Oslo, Oslo, Norway (author)
- Yang, Z.J.Department of Physics, University of Oslo, Oslo, Norway (author)
- Guo, S.J.Luleå tekniska universitet (author)
- Loberg, BengtLuleå tekniska universitet(Swepub:ltu)bengt (author)
- Luleå tekniska universitetDepartment of Physics, University of Oslo, Oslo, Norway (creator_code:org_t)
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- In:Journal of Applied Physics: AIP Publishing70:12, s. 7496-74990021-89791089-7550
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