INFLUENCE OF DEFECT STRUCTURE FEATURES ON SUPERCONDUCTING PROPERTIES OF NB SINGLE-CRYSTALS

Authors
AKSENOV VK BORISOVA IF SOKOLENKO VI STARODUBOV YD
Citation
Vk. Aksenov et al., INFLUENCE OF DEFECT STRUCTURE FEATURES ON SUPERCONDUCTING PROPERTIES OF NB SINGLE-CRYSTALS, Fizika nizkih temperatur, 19(10), 1993, pp. 1077-1082
Citations number
10
Categorie Soggetti
Physics, Applied
Journal title
Fizika nizkih temperatur → ACNP
ISSN journal
01326414
Volume
19
Issue
10
Year of publication
1993
Pages
1077 - 1082
Database
ISI
SICI code
0132-6414(1993)19:10<1077:IODSFO>2.0.ZU;2-S
Abstract
The influence of the structure state formed under low temperature defo rmation (rolling with different reductions at 20 K) upon the supercond ucting characteristics of Nb single crystals (001) [110] is studied. T he T-c variations with growing reductions delta reflect the stages of the defect structure evolution, in particular, the initial formation o f regions of localized plastic flow, the change-ever to a uniform disl ocation distribution and the onset of rotational plasticity. Complex n on-monotonous changes are revealed for T-c, H-c2 and p(n) on removal o f the surface layers of deformed single crystals. The reasons for the effects observed are discussed.