Publikationsserver der RWTH Aachen University
The impact of chemically active additions on phase formation and superconducting properties on partially melt processed Bi 2 Sr 2 CaCu 2 O x
Abstract
dc:descriptionThe effects of Ba additions on the compositional, microstructural, and electrical properties of Bi2Sr2CaCu2O8+d( (Bi-2212) superconductors have been investigated. Objectives of this investigation included understanding the Bi-2212/BaO2 chemistry within bulk and Ag-clad powder-in-tube processed tapes, optimizing the manufacturing process of Bi-2212/BaO2 monofilament tape conductor, and studying the microstructural features of Bi-2212/BaO2 in comparison to pure Bi-2212. The magnetization properties of Bi-2212/BaO2 were compared with pure Bi-2212 to evaluate the potential of the precipitates as effective artificial flux pinning centers. The influence of BaO2 additions on the transport properties of Ag-clad tape conductors was studied extensively. SEM micrographs, pole figure analyses, and transport properties in self-field and high fields up to 17 T suggested significant influence on the development of texture in Bi-2212 due to an addition of BaO2. To estimate the potential of BaO2 additions to assist the formation of potential pinning sites, TEM investigations and magnetization measurements on pure Bi-2212 and BaO2 added Bi-2212 were carried out. The achieved results are presented and discussed.
Degree
thesis:*- Grantor dc:publisher
- Publikationsserver der RWTH Aachen University
- Year dc:date
- 2001
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Trociewitz, Ulf Peter
- Contributors dc:contributor
-
- Sahm, Peter R.
Subjects
dc:subject × 7Rights
dc:rights- Statement dc:rights
-
- info:eu-repo/semantics/openAccess
- Language dc:language
- eng
Identifiers
dc:identifier.*- OAI identifier oai:identifier
- oai:publications.rwth-aachen.de:56968