Published February 1994 | Version v1
Journal article Metadata-only

New high-pressure Sr-Ca-Cu-O compounds and their superconducting properties

Creators

  • 1. Superconductivity Research Lab., Tokyo (Japan)
  • 2. Univ. of Tokyo (Japan)

Description

It is shown for (Sr, Ca)1-yCuO2.00+z (nominal composition) superconductors fabricated under a high pressure of 5 GPa and at 930 degrees C that, as z increases, the Meissner fraction increases from a few percent to 20% and then starts to decrease. In the X-ray powder diffraction pattern for the sample with the maximum Meissner fraction, it is obvious that the open-quotes infinite layerclose quotes structure has been decomposed and a new structure becomes the major phase. It appears that the new structure is the open-quotes 0223close quotes structure which consists of rock-salt and the open-quotes infinite-layerclose quotes type blocks. This material is likely to be a new superconducting cuprate. 17 refs., 4 figs

Additional details

Publishing Information

Journal Title
Journal of Superconductivity
Journal Volume
7
Journal Issue
1
Journal Page Range
p. 55-58.
ISSN
0896-1107
CODEN
JOUSEH

Conference

Title
Physics and chemistry of molecular and oxide superconductors conference.
Dates
27-31 Jul 1993.
Place
Eugene, OR (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
25072245
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CALCIUM COMPOUNDS; COPPER OXIDES; CRYSTAL STRUCTURE; CRYSTAL-PHASE TRANSFORMATIONS; CUPRATES; HIGH PRESSURE; HIGH-TC SUPERCONDUCTORS; MEISSNER-OCHSENFELD EFFECT; PRESSURE DEPENDENCE; STRONTIUM COMPOUNDS; SUPERCONDUCTIVITY; SYNTHESIS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 1000-4000 K; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; SCATTERING; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Secondary number(s)
CONF-930710--.