TY - JOUR
T1 - Microstructural development and superconducting properties of BaO2-added Bi2Sr2CaCu2O8+x
AU - Trociewitz, Ulf P.
AU - Sahm, Peter R.
AU - Koritala, Rachel E.
AU - Brandao, Luiz
AU - Bacaltchuk, Cristiane
AU - Schwartz, Justin
N1 - Funding Information:
Manuscript received September 17,2000. C. Bacaltchuk, J. Schwartz, U.P. Trociewitz: National High Magnetic Field Laboratory, Florida State University, Tallahassee, F132310, USA First author email: [email protected], phone: 850-644-7765. J. Schwartz: Dept. of Mech. Eng., FAMU-FSU College of Eng., Tallahassee FI 32310, USA P.R. Sahm, U.P. Trociewitz: RWTH Aachen University of Technology, D-52056 Aachen, GERMANY R.E. Koritala: Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA C. Bacaltchuk, L. Brandao: Inst. Militar de Eng., Dept. de Eng. Mecanica e de Materiais, 22270-290 Rio de Janeiro R J, BRAZIL This project has been supported in part by funding from the NSF under contract DMR-9527035 and also in part (R.E. Koritala) by funding from the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, as part of a DOE program to develop electric power technology, under Contract W-31-109-Eng-38.
PY - 2001/3
Y1 - 2001/3
N2 - Investigations on the effect of Ba additions in Bi-2212 superconductors are focussed on compositional, microstructural, and magnetization studies. In previous studies, we showed that BaO2 reacts with Bi-2212 to form second phases. Zero-field and in-field transport properties in Ag-clad BaO2 added Bi-2212 tapes had been improved at 4.2 K [1]-[3]. SEM micrographs, pole figures, and transport critical currents versus magnetic field orientation suggest that BaO2 has a strong influence on the microstructural properties. Magnetization studies revealed that BaO2 does not affect the pinning properties of optimally added Bi-2212. To estimate the potential of BaO2 additions in creating possible pinning sites, TEM investigations were carried out focussing on sub-micrometer inclusions and growth defects in the superconducting phase.
AB - Investigations on the effect of Ba additions in Bi-2212 superconductors are focussed on compositional, microstructural, and magnetization studies. In previous studies, we showed that BaO2 reacts with Bi-2212 to form second phases. Zero-field and in-field transport properties in Ag-clad BaO2 added Bi-2212 tapes had been improved at 4.2 K [1]-[3]. SEM micrographs, pole figures, and transport critical currents versus magnetic field orientation suggest that BaO2 has a strong influence on the microstructural properties. Magnetization studies revealed that BaO2 does not affect the pinning properties of optimally added Bi-2212. To estimate the potential of BaO2 additions in creating possible pinning sites, TEM investigations were carried out focussing on sub-micrometer inclusions and growth defects in the superconducting phase.
UR - http://www.scopus.com/inward/record.url?scp=0035267979&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035267979&partnerID=8YFLogxK
U2 - 10.1109/77.919707
DO - 10.1109/77.919707
M3 - Conference article
AN - SCOPUS:0035267979
SN - 1051-8223
VL - 11
SP - 3054
EP - 3057
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 1 III
T2 - 2000 Applied Superconductivity Conference
Y2 - 17 September 2000 through 22 September 2000
ER -