Flux pinning and weak link structure in Ca2Cu1O3 doped LnBa2Cu3O7-y (Ln = La and Y)
- 1. Superconductivity Research Lab., Nagoya Div., ISTEC, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456 (Japan)
Description
Flux pinning and weak link structure were studied on the effect of Ca doping in LnBa2Cu3O7-y systems (Ln = La and Y). The magnitude and the magnetic field dependence of the critical current density were improved by Ca doping. A small amount of impurity phase of such as Ca2Cu1O3 may work as a desirable flux pinning center. Moreover, it was found that the current-temperature characteristics for Ca-doped samples showed the evidence of two kinds of superconducting phases which have different transition temperature Tc and Tc'. The experimental result agrees well with the Ambegaokar--Baratoff theory for asymmetric Josephson junctions (S-I-S') in the temperature range of T < Tc' and with the proximity junction theory (S-N-S) in the range of Tc' < T < Tc
Additional details
Publishing Information
- Publisher
- Materials Research Society.
- Imprint Place
- Pittsburgh, PA (United States)
- ISBN
- 1-55899-057-7
- Imprint Title
- High-temperature superconductors: Fundamental properties and novel materials processing
- Imprint Pagination
- 1322 p.
- Journal Page Range
- p. 955-958.
Conference
- Title
- Materials Research Society fall meeting.
- Dates
- 27 Nov - 2 Dec 1989.
- Place
- Boston, MA (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23018667
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- BARIUM OXIDES; CALCIUM; CALCIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; CURRENT DENSITY; DOPED MATERIALS; EXPERIMENTAL DATA; JOSEPHSON JUNCTIONS; LANTHANUM OXIDES; MAGNETIC FLUX; METALLURGY; PROXIMITY EFFECT; TRANSITION TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALKALINE EARTH METALS; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; DATA; ELECTRIC CURRENTS; ELEMENTS; INFORMATION; LANTHANUM COMPOUNDS; MATERIALS; METALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SEMICONDUCTOR JUNCTIONS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-891119--.