Superconductivity and flux pinning in Nd[sub 1+x]Ba[sub 2-x]Cu[sub 3]O[sub 7+[delta]]

Conference · Mon Aug 24 04:00:00 EDT 1992

OSTI ID:6772826

Yoo, S I; Kramer, M J; McCallum, R W

The substitution of Nd[sup +3] for Ba[sup +2] in Nd[sub 1+x]Ba[sub 2-x]Cu[sub 3]O[sub 7+[delta]] (Nd123ss) increase the occupation of O(5) sites. For x > 0.1 there is a significant depression of [Tc] and for x < 0.1 there is no substantial decrease [Tc] within experimental error. [Tc] vs x is characterized by two plateaus analogous [Tc] vs [delta] in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] (Y123). Analysis of oxygen contents of Nd123ss suggests the analogy with Y123 is valid. The transition width and Meissner fraction for all Nd123ss samples are strongly dependent on the sintering temperatures. While [Tc] is not affected over the range 0

• Research Organization: Ames Lab., IA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6772826
• Report Number(s): IS-M-732; CONF-920802--42; ON: DE93004444
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
&amp; Refractories-- Superconducting Properties-- (1992-)
665410 -- Superconductivity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BARIUM
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
MAGNETIC FLUX
MATERIALS TESTING
METALS
NEODYMIUM
NEODYMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
RARE EARTHS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TESTING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TYPE-II SUPERCONDUCTORS