Vortex pinning and magnetic peak effect in Eu(Eu,Ba)2.125Cu3Ox

Altın, E.; Gokhfeld, D. M.; Demirel, Serkan; Öz, Erdinç; Kurt, F.; Altın, S.; Yakıncı, M. E.

doi:10.1007/s10854-014-1753-1

Cited by 14 publications

(10 citation statements)

References 27 publications

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“…Hirr( T ) values were determined from the closing of the magnetization loops, and for temperatures, where this was not possible, the Hirr values were determined via the flux pinning force scaling as described in detail in Reference [36]. The solid line in Figure 5d is a fit using the relation Hirr(T)=H0(1−T/Tc)n with n= 3, common for many 123-materials [47]. The fit parameter H0 employed for the fit is 130 T. The values of Hirr are clearly much higher than those of other YBCO superconductors, being comparable to those of IG-processed, YBCO bulk samples [48,49].…”

Section: Resultsmentioning

confidence: 99%

Superconducting YBCO Foams as Trapped Field Magnets

et al. 2019

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Superconducting foams of YBa 2 Cu 3 O y (YBCO) are proposed as trapped field magnets or supermagnets. The foams with an open-porous structure are light-weight, mechanically strong and can be prepared in large sample sizes. The trapped field distributions were measured using a scanning Hall probe on various sides of an YBCO foam sample after field-cooling in a magnetic field of 0.5 T produced by a square Nd-Fe-B permanent magnet. The maximum trapped field (TF) measured is about 400 G (77 K) at the bottom of the sample. Several details of the TF distribution, the current flow and possible applicatons of such superconducting foam samples in space applications, e.g., as active elements in flux-pinning docking interfaces (FPDI) or as portable strong magnets to collect debris in space, are outlined.

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Section: Resultsmentioning

confidence: 99%

Superconducting YBCO Foams as Trapped Field Magnets

et al. 2019

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“…. The solid line is a fit using the relation H irr = H irr (0)(1 − T/T c ) n with n = 3, common for many 123-materials [35].…”

Section: Resultsmentioning

confidence: 99%

Superconducting YBCO Foams as Trapped Field Magnets

Koblischka¹,

Naik²,

Koblischka-Veneva³

et al. 2019

Preprint

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Superconducting foams of YBa$_2$Cu$_3$O$_y$ (YBCO) are proposed as trapped field magnets or supermagnets. The foams with an open-porous structure are light-weight, mechanically strong and can be prepared in large sample sizes. The trapped field distributions were measured using a scanning Hall probe on various sides of an YBCO foam sample after field-cooling in a magnetic field of 0.5 T produced by a square Nd-Fe-B permanent magnet. The maximum trapped field (TF) measured is about 400 G (77 K) at the bottom of the sample. Several details of the TF distribution, the current flow and possible applicatons of such superconducting foam samples in space applications, e.g., as active elements in flux-pinning docking interfaces (FPDI) or as portable strong magnets to collect debris in space, are outlined.

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“…The peak in the j peak c (B) dependence is accompanied by a decrease of l s values such that l s,2 /l s,1 ≈ j c,1 /j c,2 . This relation is observed in asymmetric magnetization loops with the peak effect 14,[24][25][26][27] . The depth of the equilibrium region during the order-disorder transition changes as…”

Section: Peak Effect and Critical Currentmentioning

confidence: 75%

Use of a Sigmoid Function to Describe Second Peak in Magnetization Loops

Gokhfeld

2017

J Supercond Nov Magn

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Order-disorder transitions of a vortex lattice transfer type-II superconductors from a low critical current state to a high one. The similar transition between different current states can be caused by electromagnetic granularity. A sigmoid curve is proposed to describe the corresponding peak in a field dependence of the macroscopic critical density. Using the extended critical state model, analytic expressions are obtained for the field dependencies of the local critical current density, the depth of equilibrium surface region, and the macroscopic critical current density. The expressions are well fit to published data.

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Vortex pinning and magnetic peak effect in Eu(Eu,Ba)2.125Cu3Ox

Cited by 14 publications

References 27 publications

Superconducting YBCO Foams as Trapped Field Magnets

Superconducting YBCO Foams as Trapped Field Magnets

Superconducting YBCO Foams as Trapped Field Magnets

Use of a Sigmoid Function to Describe Second Peak in Magnetization Loops

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