ENHANCED T(C) AND STRONG FLUX-PINNING IN MELT-PROCESSED NDBA2CU3OY SUPERCONDUCTORS

Authors
YOO SI MURAKAMI M SAKAI N HIGUCHI T TANAKA S
Citation
Si. Yoo et al., ENHANCED T(C) AND STRONG FLUX-PINNING IN MELT-PROCESSED NDBA2CU3OY SUPERCONDUCTORS, JPN J A P 2, 33(7B), 1994, pp. 120001000-120001003
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS → ACNP
Volume
33
Issue
7B
Year of publication
1994
Pages
120001000 - 120001003
Database
ISI
SICI code
Abstract
The effects of various oxygen partial pressures (P(O2)) during melt pr ocessing on the superconducting properties of fabricated NdBa2Cu3Oy (N d123) superconductors have been systematically investigated. Unlike in air or 02, samples melt-processed in reduced oxygen atmospheres exhib ited unprecedentedly high T(c)'s of 95-96 K with a sharp superconducti ng transition. Especially, for a sample melt-processed in 0.1% 02 in A r, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), im plying that very effective flux pinning can be achieved in high magnet ic fields.