Nondestructive magneto-optical characterization of natural and artificial fefects on 3" HTSC Wafers at liquid nitrogen temperature

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1999
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Eisenmenger, Johannes
Schiessling, Joachim
Bolz, Uwe
Lorenz, Michael
Hochmuth, Holger
Wallenhorst, Michael
Dötsch, Horst
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IEEE Transactions on Applied Superconductivity. 1999, 9(2), pp. 1840-1843. Available under: doi: 10.1109/77.784815
Zusammenfassung

Double-sided 3" HTSC Wafers were characterized by the magneto-optic technique. The presented apparatus allows a nondestructive and fast detection of local and extended inhomogeneities in the critical current density with high lateral resolution in the micrometer range. Additional gold-layers on the HTSC wafers, as they are sometmes used for the device production, do not influence the characterization result. The high sensitivity of the presented apparatus allows even the detection of local defects at higher temperature (77 K) where contrasts in the critical current are weaker and the magneto-optical characterization of HTSC thin Alms is milch more difficult than at lower temperatures. So the apparatus can be used even under conditions where cooling with liquid helium or closed-cycle refrigerators is not available. The sensitivity was tested on natural and artificial defects, the latter being prepared by means of a focused laser beam.

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ISO 690EISENMENGER, Johannes, Joachim SCHIESSLING, Uwe BOLZ, Bernd-Uwe RUNGE, Paul LEIDERER, Michael LORENZ, Holger HOCHMUTH, Michael WALLENHORST, Horst DÖTSCH, 1999. Nondestructive magneto-optical characterization of natural and artificial fefects on 3" HTSC Wafers at liquid nitrogen temperature. In: IEEE Transactions on Applied Superconductivity. 1999, 9(2), pp. 1840-1843. Available under: doi: 10.1109/77.784815
BibTex
@article{Eisenmenger1999Nonde-9421,
  year={1999},
  doi={10.1109/77.784815},
  title={Nondestructive magneto-optical characterization of natural and artificial fefects on 3" HTSC Wafers at liquid nitrogen temperature},
  number={2},
  volume={9},
  journal={IEEE Transactions on Applied Superconductivity},
  pages={1840--1843},
  author={Eisenmenger, Johannes and Schiessling, Joachim and Bolz, Uwe and Runge, Bernd-Uwe and Leiderer, Paul and Lorenz, Michael and Hochmuth, Holger and Wallenhorst, Michael and Dötsch, Horst}
}
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