Abstract
A multi-detector neutron powder diffractometer for structural studies of ceramic high-T{sub c} superconductors has been constructed and installed. In combination with a gas-volumetric set-up the instrument allows for on-line studies of materials synthesis, oxidation kinetics and equilibrium pressure, and structural phase properties under controlled conditions. The main work has been on YBa{sub 2}Cu{sub 3}O{sub 6+x} where significant information about the structural, thermodynamic and magnetic properties have been obtained and related to the superconducting properties. The results show the importance of controlled conditions for synthesis and oxidation of materials with optimal superconducting properties, and give ways to obtain them. Significant information about the base physical properties of the material is also supplied. Neutron and x-ray diffraction have been used to study the structural defects, which are introduced into YBa{sub 2}Cu{sub 3}O{sub 6+x} as a result of irradiation with fast neutrons, and give rise to a significant increase in the critical current density. Other investigations of ceramic high-T{sub c} superconductors include studies of magnetic phases in rare-earth doped superconducting YBa{sub 2}Cu{sub 3}O{sub 6+x}, and studies of crystal structure and oxidation properties of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4+y}, and structural studies of Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8+y}, (Bi,Pb){sub 2}Ca{sub 2}(Sr,Ca){sub 2}Cu{sub 3}O{sub 10} and
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Citation Formats
Hessel Andersen, N.
Development of ceramic superconductors; Udvikling af keramiske superledere.
Denmark: N. p.,
1993.
Web.
Hessel Andersen, N.
Development of ceramic superconductors; Udvikling af keramiske superledere.
Denmark.
Hessel Andersen, N.
1993.
"Development of ceramic superconductors; Udvikling af keramiske superledere."
Denmark.
@misc{etde_10138583,
title = {Development of ceramic superconductors; Udvikling af keramiske superledere}
author = {Hessel Andersen, N}
abstractNote = {A multi-detector neutron powder diffractometer for structural studies of ceramic high-T{sub c} superconductors has been constructed and installed. In combination with a gas-volumetric set-up the instrument allows for on-line studies of materials synthesis, oxidation kinetics and equilibrium pressure, and structural phase properties under controlled conditions. The main work has been on YBa{sub 2}Cu{sub 3}O{sub 6+x} where significant information about the structural, thermodynamic and magnetic properties have been obtained and related to the superconducting properties. The results show the importance of controlled conditions for synthesis and oxidation of materials with optimal superconducting properties, and give ways to obtain them. Significant information about the base physical properties of the material is also supplied. Neutron and x-ray diffraction have been used to study the structural defects, which are introduced into YBa{sub 2}Cu{sub 3}O{sub 6+x} as a result of irradiation with fast neutrons, and give rise to a significant increase in the critical current density. Other investigations of ceramic high-T{sub c} superconductors include studies of magnetic phases in rare-earth doped superconducting YBa{sub 2}Cu{sub 3}O{sub 6+x}, and studies of crystal structure and oxidation properties of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4+y}, and structural studies of Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8+y}, (Bi,Pb){sub 2}Ca{sub 2}(Sr,Ca){sub 2}Cu{sub 3}O{sub 10} and Pb{sub 2}Sr{sub 2}(RE,Ca)Cu{sub 3}O{sub 8+x} (RE = rare earth metal). (au) (7 ills., 17 refs.).}
place = {Denmark}
year = {1993}
month = {Dec}
}
title = {Development of ceramic superconductors; Udvikling af keramiske superledere}
author = {Hessel Andersen, N}
abstractNote = {A multi-detector neutron powder diffractometer for structural studies of ceramic high-T{sub c} superconductors has been constructed and installed. In combination with a gas-volumetric set-up the instrument allows for on-line studies of materials synthesis, oxidation kinetics and equilibrium pressure, and structural phase properties under controlled conditions. The main work has been on YBa{sub 2}Cu{sub 3}O{sub 6+x} where significant information about the structural, thermodynamic and magnetic properties have been obtained and related to the superconducting properties. The results show the importance of controlled conditions for synthesis and oxidation of materials with optimal superconducting properties, and give ways to obtain them. Significant information about the base physical properties of the material is also supplied. Neutron and x-ray diffraction have been used to study the structural defects, which are introduced into YBa{sub 2}Cu{sub 3}O{sub 6+x} as a result of irradiation with fast neutrons, and give rise to a significant increase in the critical current density. Other investigations of ceramic high-T{sub c} superconductors include studies of magnetic phases in rare-earth doped superconducting YBa{sub 2}Cu{sub 3}O{sub 6+x}, and studies of crystal structure and oxidation properties of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4+y}, and structural studies of Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8+y}, (Bi,Pb){sub 2}Ca{sub 2}(Sr,Ca){sub 2}Cu{sub 3}O{sub 10} and Pb{sub 2}Sr{sub 2}(RE,Ca)Cu{sub 3}O{sub 8+x} (RE = rare earth metal). (au) (7 ills., 17 refs.).}
place = {Denmark}
year = {1993}
month = {Dec}
}