<div class="csl-bib-body">
<div class="csl-entry">Eisterer, M., Semper, F., Qin, D., Naito, M., & Yamamoto, A. (2024, September 3). <i>Homogeneity of the current flow across artificial grain boundaries in K-doped Ba-122 thin films</i> [Conference Presentation]. Applied Superconductivity Conference, Salt Lake City, United States of America (the). http://hdl.handle.net/20.500.12708/216180</div>
</div>
-
dc.identifier.uri
http://hdl.handle.net/20.500.12708/216180
-
dc.description.abstract
Large upper critical fields and high critical current densities at low temperatures make the iron-based superconductors (IBS) promising candidates for high field magnets. However, they have to compete with cuprate superconductors that have even better intrinsic properties and their conductor technology is much more mature. In both these classes of materials, the suppression of the critical current across grain boundaries impedes a cheap conductor production so far. It is well established that this grain-boundary limitation is less severe in the IBS but still unclear whether grain coupling could be strong enough in untextured or weakly textured wires to enable cheap production technologies such as powder-in-tube (PIT). Potassium doped Ba-122 achieved the highest critical current densities in PIT wires and tapes so far, its reason still being unclear, since thin films and artificial grain boundaries of this compound have been realized only recently.
Thin films of K-doped Ba-122 films were grown by molecular beam epitaxy on strontium titanate bi-crystal substrates with a 50 nm thick BaFe2As2 buffer layer. The magnetic field profile above 24°, 30 °, and 36.8° boundaries were mapped by scanning Hall probe microscopy. The currents crossing the grain boundaries were derived from the inversion of Biot-Savart’s law. First results indicate undisturbed current flow in some areas of the grain boundary.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
-
dc.language.iso
en
-
dc.subject
Superconductivity
en
dc.subject
Granularity
en
dc.subject
Iron based superconductors
en
dc.subject
Critical Currents
en
dc.title
Homogeneity of the current flow across artificial grain boundaries in K-doped Ba-122 thin films
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Tokyo University of Agriculture and Technology, Japan
-
dc.relation.grantno
I 4146-N36
-
dc.type.category
Conference Presentation
-
tuw.project.title
Weiterentwicklung von supraleitenden Bandleitern
-
tuw.researchTopic.id
M2
-
tuw.researchTopic.id
M8
-
tuw.researchTopic.name
Materials Characterization
-
tuw.researchTopic.name
Structure-Property Relationsship
-
tuw.researchTopic.value
50
-
tuw.researchTopic.value
50
-
tuw.publication.orgunit
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
tuw.author.orcid
0000-0002-7160-7331
-
tuw.author.orcid
0009-0003-6212-0657
-
tuw.author.orcid
0000-0002-7581-889X
-
tuw.author.orcid
0000-0001-6346-3422
-
tuw.event.name
Applied Superconductivity Conference
-
tuw.event.startdate
01-09-2024
-
tuw.event.enddate
06-09-2024
-
tuw.event.online
On Site
-
tuw.event.type
Event for scientific audience
-
tuw.event.place
Salt Lake City
-
tuw.event.country
US
-
tuw.event.presenter
Eisterer, Michael
-
wb.sciencebranch
Physik, Astronomie
-
wb.sciencebranch.oefos
1030
-
wb.sciencebranch.value
100
-
item.openairetype
conference paper not in proceedings
-
item.cerifentitytype
Publications
-
item.grantfulltext
none
-
item.languageiso639-1
en
-
item.openairecristype
http://purl.org/coar/resource_type/c_18cp
-
item.fulltext
no Fulltext
-
crisitem.project.funder
FWF - Österr. Wissenschaftsfonds
-
crisitem.project.grantno
I 4146-N36
-
crisitem.author.dept
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
crisitem.author.dept
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
