Published July 3, 1974 | Version v1
Miscellaneous Metadata-only

Magnetic flux line fixing caused by defects in deformed superconducting niobium single crystals

Creators

Description

In order to perform a quantitative analysis of the fixing mechanism of flux lines caused by defects, the critical flux gradient was determined by measurements of magnetisation and the transverse critical current in niobium single crystals, deformed in an oscillatory way. From the experimental flux gradient data and the reversible behaviour of the superconductor, the maximum interaction between flux lines and defects could be determined by a statistical theory of Labusch. If flux lines and defects have perpendicular orientation, a fixing force of 1.1 x 10-7 dyn results. (GSC)

Availability note (English)

Available from the library of the Goettingen Univ.

Abstract (German)

Zur quantitativen Analyse der Verankerung von Flussfaeden durch Versetzungen wurde der kritische Flussgradient durch Magnetisierungs- und transversale kritische Strommessungen an wechselverformten Niob-Einkristallen bestimmt. Aus den gemessenen Flussgradienten und dem reversiblen Verhalten der Supraleiter konnte die maximale Wechselwirkung zwischen Flussfaeden und Versetzungen mit Hilfe einer statistischen Theorie von Labusch bestimmt werden. Fuer den Fall, dass Flussfaeden und Versetzungen senkrecht zueinander liegen, ergab sich eine Verankerungskraft von 1,1 x 10-7 dyn. (GSC)

Additional details

Additional titles

Original title (German)
Magnetische Flussverankerung durch Versetzung in wechselverformten supraleitenden Niob-Einkristallen

Publishing Information

Imprint Pagination
30 p.

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8333800
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Resource subtype / Literary indicator
Thesis, Non-conventional Literature
Descriptors DEI
CRITICAL CURRENT; DEFORMATION; DISLOCATIONS; ELECTRON MICROSCOPY; FLUX QUANTIZATION; MAGNETIC FLUX; MAGNETIZATION; MONOCRYSTALS; NIOBIUM; TYPE-II SUPERCONDUCTORS
Descriptors DEC
CRYSTAL DEFECTS; CRYSTAL STRUCTURE; CRYSTALS; CURRENTS; ELECTRIC CURRENTS; ELEMENTS; LINE DEFECTS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; METALS; MICROSCOPY; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TRANSITION ELEMENTS

Optional Information

Notes
1 tab.; with figs.