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Blinov, E. V.; Laiho, R.; Lähderanta, E.; Stepanov, Yu. P.; Traito, K. B.

doi:10.1103/physrevb.51.3824

Cited by 8 publications

(25 citation statements)

References 36 publications

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“…Over the entire range of their measurements they observed that I CO increased with time. This result can be expected since the remanent trapped flux is known to decay with time [55][56][57]. This result also corroborates and extends earlier work by Kwasnitza and Widmer [37][38][39][40] and other workers [12,13,[58][59][60].…”

Section: Introductionsupporting

confidence: 91%

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux

Rezeq¹,

LeBlanc²

2007

Supercond. Sci. Technol.

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Altshuler et al discovered that dICO/dlnt, the rate of increase of the critical current IC with time in polycrystalline high TC samples, traced a peak when measured versus HM, the amplitude of the sweep of the flux trapping magnetic field. We show that the sharp peak in dICO/dlnt which their model generates arises from a special feature of the formulae they use to describe IC versus HM. Pursuing an extension of these formulae, and exploiting a Brandt–Indenbom formula for the return field of the magnetized grains, we (i) reproduce observations of Altshuler et al, Batista-Leyva et al and a family of curves of dICO/dlnt reported by Cobas et al, and (ii) estimate the return fields. We also explore the peak structure of dICO/dlnt versus HM generated by using two well known empirical expressions for IC(H), and the Brandt–Indenbom formula.

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Section: Introductionsupporting

confidence: 91%

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux

Rezeq¹,

LeBlanc²

2007

Supercond. Sci. Technol.

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show abstract

Section: Introductionsupporting

confidence: 91%

“…Altshuler et al [1] also found that dI CO /d ln t increases as a function of H M over the lower range of H M . This behaviour can also be expected since the rate of release of the trapped flux is known to rise as the density of flux initially stored in the specimen is increased [5,[55][56][57]61]. They then discovered that dI CO /d ln t ceased to grow, but traced a sharp peak, as the excursion of H M was augmented.…”

Section: Introductionmentioning

confidence: 83%

The three-particle problem in a model of light radiation

Zhukov¹,

Minlos²

1995

Russ. Math. Surv.

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Altshuler et al discovered that dI CO /d ln t, the rate of increase of the critical current I C with time in polycrystalline high T C samples, traced a peak when measured versus H M , the amplitude of the sweep of the flux trapping magnetic field. We show that the sharp peak in dI CO /d ln t which their model generates arises from a special feature of the formulae they use to describe I C versus H M . Pursuing an extension of these formulae, and exploiting a Brandt-Indenbom formula for the return field of the magnetized grains, we (i) reproduce observations of Altshuler et al, Batista-Leyva et al and a family of curves of dI CO /d ln t reported by Cobas et al, and (ii) estimate the return fields. We also explore the peak structure of dI CO /d ln t versus H M generated by using two well known empirical expressions for I C (H), and the Brandt-Indenbom formula.

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“…Blinov et al [1] report on the relaxation of the remanent magnetic moment of small electrically isolated Y-Ba-Cu-O particles subjected to various magnetization procedures in the weak-field regime where the number of vortices trapped in each particle is small. Their article focuses on the behaviour in a sample where the grain size varies between 6 and 10 µm and the magnetic field excursion H 0 ≈ 100 G. They examine the relaxation rates subsequent to three temperature-magnetic field histories (which they label A, B and C) followed in establishing the trapped flux configurations.…”

Section: Introductionmentioning

confidence: 99%

Effect of the configuration of the trapped flux on the decay rate of remanent magnetic moments in type II superconductors

LeBlanc

Cameron

Çelebi

et al. 1998

Supercond. Sci. Technol.

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Several workers have measured the rates of decay of remanent magnetic moments in granular high- superconductors where the temperature-field histories generated trapped flux profiles comprising two concentric regions of countercirculating persistent currents. Exploiting a simple model based on the critical state for bulk specimens and the conservation of flux for the redistribution of vortices, and neglecting , we account for the major features of these observations although in some cases the number of trapped vortices is small. The model makes readily testable predictions of the relative magnitudes of the initial rates of magnetic relaxation for various configurations of flux density profiles.

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Structure and relaxation of the trapped magnetic flux in Y-Ba-Cu-O superconductors in magnetic fields below the first critical fieldHc1

Cited by 8 publications

References 36 publications

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux

The three-particle problem in a model of light radiation

Effect of the configuration of the trapped flux on the decay rate of remanent magnetic moments in type II superconductors

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Structure and relaxation of the trapped magnetic flux in Y-Ba-Cu-O superconductors in magnetic fields below the first critical fieldHc1

Cited by 8 publications

References 36 publications

Examination of the peak in dICO/dlntin weak-linked highTcsuperconductors caused by trapped flux

Examination of the peak in dICO/dlntin weak-linked highTcsuperconductors caused by trapped flux

The three-particle problem in a model of light radiation

Effect of the configuration of the trapped flux on the decay rate of remanent magnetic moments in type II superconductors

Contact Info

Product

Resources

About

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux

Examination of the peak in dI_CO/dlntin weak-linked highT_csuperconductors caused by trapped flux