Abstract
Magnetization loops were measured on struts of superconducting YBa2Cu3Ox (YBCO) foams taken from various positions of a 5 × 2 × 2 cm3 large foam sample prepared at RWTH Aachen. From these data, flux pinning forces, <formula><tex>$F_p = j_c$</tex></formula> × B, were calculated and pinning force scaling diagrams <formula><tex>$F_p/F_{p,max}$</tex></formula> vs. h = Ha/Hirr were established. The scaling in the temperature range 60 K < T < 90 K was found to be well developed for all samples with peak positions, h0, above 0.4, which is an indication of <formula><tex>$\delta T_c$</tex></formula>-pinning. From microstructure analysis using the electron backscatter diffraction technique (EBSD) it is known that the struts are fully converted into the 123-phase with embedded 211 particles being relatively small. The variation of <formula><tex>$F_p$</tex></formula> depending on the position of the struts in the original sample directly reveals the changes of the texture as found employing EBSD.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Applied Superconductivity |
| DOIs | |
| Publication status | Accepted/In press - 2018 Jan 1 |
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Keywords
- Flux pinning
- flux pinning
- foam
- Force
- irreversibil-ity fields
- Magnetic field measurement
- magnetization
- Microstructure
- scaling
- Shape
- Temperature measurement
- YBCO
- Yttrium barium copper oxide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Flux pinning analysis of superconducting YBCO foam struts. / Koblischka, Michael Rudolf; Koblischka-Veneva, Anjela Dimitrova; Chang, Crosby Soon; Hauet, Thomas; Reddy, E. S.; Schmitz, Georg J.
In: IEEE Transactions on Applied Superconductivity, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flux pinning analysis of superconducting YBCO foam struts
AU - Koblischka, Michael Rudolf
AU - Koblischka-Veneva, Anjela Dimitrova
AU - Chang, Crosby Soon
AU - Hauet, Thomas
AU - Reddy, E. S.
AU - Schmitz, Georg J.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Magnetization loops were measured on struts of superconducting YBa2Cu3Ox (YBCO) foams taken from various positions of a 5 × 2 × 2 cm3 large foam sample prepared at RWTH Aachen. From these data, flux pinning forces, $F_p = j_c$ × B, were calculated and pinning force scaling diagrams $F_p/F_{p,max}$ vs. h = Ha/Hirr were established. The scaling in the temperature range 60 K < T < 90 K was found to be well developed for all samples with peak positions, h0, above 0.4, which is an indication of $\delta T_c$-pinning. From microstructure analysis using the electron backscatter diffraction technique (EBSD) it is known that the struts are fully converted into the 123-phase with embedded 211 particles being relatively small. The variation of $F_p$ depending on the position of the struts in the original sample directly reveals the changes of the texture as found employing EBSD.
AB - Magnetization loops were measured on struts of superconducting YBa2Cu3Ox (YBCO) foams taken from various positions of a 5 × 2 × 2 cm3 large foam sample prepared at RWTH Aachen. From these data, flux pinning forces, $F_p = j_c$ × B, were calculated and pinning force scaling diagrams $F_p/F_{p,max}$ vs. h = Ha/Hirr were established. The scaling in the temperature range 60 K < T < 90 K was found to be well developed for all samples with peak positions, h0, above 0.4, which is an indication of $\delta T_c$-pinning. From microstructure analysis using the electron backscatter diffraction technique (EBSD) it is known that the struts are fully converted into the 123-phase with embedded 211 particles being relatively small. The variation of $F_p$ depending on the position of the struts in the original sample directly reveals the changes of the texture as found employing EBSD.
KW - Flux pinning
KW - flux pinning
KW - foam
KW - Force
KW - irreversibil-ity fields
KW - Magnetic field measurement
KW - magnetization
KW - Microstructure
KW - scaling
KW - Shape
KW - Temperature measurement
KW - YBCO
KW - Yttrium barium copper oxide
UR - http://www.scopus.com/inward/record.url?scp=85056339535&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056339535&partnerID=8YFLogxK
U2 - 10.1109/TASC.2018.2880334
DO - 10.1109/TASC.2018.2880334
M3 - Article
AN - SCOPUS:85056339535
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
ER -