TY - JOUR
T1 - High field scanning Hall probe imaging of high temperature superconductors
AU - Perkins, G. K.
AU - Bugoslavsky, Yu V.
AU - Qi, X.
AU - MacManus-Driscoll, J. L.
AU - Caplin, A. D.
N1 - Funding Information:
Manuscript received 18 September 2000. This work was supported by the U.K. Engineering and Physical Sciences Research Council and by EU Contract BRPR CT97 -0556. (a) Blackett Laboratory, Imperial College of Science Technology and Medicine, Prince Consort Road, London SW7 2BZ, England, (telephone:+44 020 75947609, e-mail: [email protected]). (b) Materials Department, Imperial College of Science Technology and Medicine, Prince Consort Road, London SW7 2B2, England.
PY - 2001/3
Y1 - 2001/3
N2 - Power Applications of high temperature superconductors (HTS) are emerging rapidly towards the market place. While first generation Bi2Sr2Ca2Cu3O10 (BSCCO) powder in tube (PIT) conductors are already used in the industrial sector (magnet inserts, transformers and power transmission cables), second generation Y1Ba2Cu3O7-δ (YBCO) coated conductors are being developed which promise even greater performance, particularly for applications which require high magnetic fields. Along with the development of these materials, advances in characterization techniques have enabled detailed studies of the associated loss mechanisms. In particular, magnetic imaging techniques (both scanning hall probe and magneto optics (MO)) have been able to establish the pattern of current flow within the samples, allowing study of grain boundary efficiency, current homogeneity and filament interconnection in multifilamentary PIT tapes. However, as the technology moves towards high field applications, high-field magnetic imaging is required. Presently MO is inherently limited to low fields (<0.1 T) and for this reason we have recently focused on the development of a high resolution scanning hall probe device to work in high magnetic fields. We present data showing how the current pattern evolves in the presence of high magnetic field for various samples and discuss the implications for the future development of HTS conductors.
AB - Power Applications of high temperature superconductors (HTS) are emerging rapidly towards the market place. While first generation Bi2Sr2Ca2Cu3O10 (BSCCO) powder in tube (PIT) conductors are already used in the industrial sector (magnet inserts, transformers and power transmission cables), second generation Y1Ba2Cu3O7-δ (YBCO) coated conductors are being developed which promise even greater performance, particularly for applications which require high magnetic fields. Along with the development of these materials, advances in characterization techniques have enabled detailed studies of the associated loss mechanisms. In particular, magnetic imaging techniques (both scanning hall probe and magneto optics (MO)) have been able to establish the pattern of current flow within the samples, allowing study of grain boundary efficiency, current homogeneity and filament interconnection in multifilamentary PIT tapes. However, as the technology moves towards high field applications, high-field magnetic imaging is required. Presently MO is inherently limited to low fields (<0.1 T) and for this reason we have recently focused on the development of a high resolution scanning hall probe device to work in high magnetic fields. We present data showing how the current pattern evolves in the presence of high magnetic field for various samples and discuss the implications for the future development of HTS conductors.
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U2 - 10.1109/77.919740
DO - 10.1109/77.919740
M3 - Conference article
AN - SCOPUS:0035268239
SN - 1051-8223
VL - 11
SP - 3186
EP - 3189
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 1 III
T2 - 2000 Applied Superconductivity Conference
Y2 - 17 September 2000 through 22 September 2000
ER -