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Author Bhattacharya, A. ♦ Grupp, D. E. ♦ Goldman, A. M. ♦ Welp, U.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ HIGH-TC SUPERCONDUCTORS ♦ TRANSITION TEMPERATURE ♦ MONOCRYSTALS ♦ DEMAGNETIZATION ♦ YTTRIUM OXIDES ♦ BARIUM OXIDES ♦ COPPER OXIDES ♦ SHAPE ♦ MAGNETIC FLUX ♦ MAGNETO-OPTICAL EFFECTS
Abstract Single crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} have been cut into disc shapes using an excimer laser. The bulk superconducting transition was found to be sharpened in all cases measured. This is associated with the removal of material at the edges which may be depleted of oxygen or otherwise damaged. The magneto-optical images for one crystal have been correlated with the optical image. The angular dependence of the demagnetizing factor for field applied in the plane was drastically reduced in disc-shaped crystals relative to rectangular ones. The field of first flux entry was also increased. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Place United States
Journal Applied Physics Letters
Volume Number 69
Issue Number 12


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