Thin-film transformer and magnetic head provided with such a tra

Details Thin-film transformer and magnetic head provided with such a tra Thin-film transformer and magnetic head provided with such a tra

1988-07-12

1990-05-22

Wolff, John H.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

360126, 360127, 360120, 336 84R, G11B 514, G11B 5251

Patent

active

049278045

ABSTRACT:
Thin-film transformer suitable for use in a thin-film magnetic head has two magnetically permeable thin layers 3 and 5 primary turn constituted by an electrically conducting which form a magnetic yoke. A layer 13 and a secondary turn constituted by an electrically conducting layer 15 are located in the yoke. A layer 21 of a superconducting material is provided between the layer 3 and the turns, or the turns are closely fitted together and made of a superconducting material themselves.

REFERENCES:
patent: 3098181 (1963-07-01), Cioffi
patent: 3214679 (1965-10-01), Richards
patent: 4044394 (1977-08-01), Hanazono et al.
patent: 4745506 (1988-05-01), Nakamura et al.
patent: 4787003 (1988-11-01), Nakamura et al.
Ellis, "Superconductors," Journal of Chemical Education, vol. 64, No. 10, Oct. 1987, pp. 836-841.

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