Angular dependence of the critical current density for epitaxial YBa2Cu3O7-σ thin film

Xu, Xiaojun; Fang, Jun; Xiaowen, Cao; Li, Kebin; Yao, Weiguo; Qi, Zhenzhong

doi:10.1016/0038-1098(94)90486-3

“…The anisotropic behaviour of the nanocomposite films can be characterized by a field-independent anisotropy parameter γ eff when the anisotropic Ginzburg-Landau (AGL) scaling behaviour of J c (,H) at fixed temperatures is studied. As proposed by Blatter et al 70 and applied to REBCO films 68,71,72 38,40,41,66,68 . The origin of this reduction in γ eff by the addition of nanoparticles has been associated to isotropic nanostrain and a novel depairing mechanism related to tensile strain fields in defects formed around the nanoparticles (especially in CSD-grown films) 37,38,74 .…”

Section: 3mentioning

confidence: 99%

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Cayado

¹

,

Mundet

²

,

Eloussifi

³

et al. 2017

Supercond. Sci. Technol.

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…In order to fully overcome this issue by engineering appropriate defect structures, we need first to understand the origin of the J c (θ) dependence. Remarkably, no consensus model of J c (θ) exists, highlighting the general weakness in established models of J c to reproduce the phenomenology of critical currents.One proposed origin of at least some of the features of J c (θ) gaining momentum has been the electronic mass anisotropy of the materials [4][5][6][7]. However, the physical link between this intrinsic material anisotropy and (extrinsic) properties such as J c has not been made clear.…”

mentioning

confidence: 99%

“…One proposed origin of at least some of the features of J c (θ) gaining momentum has been the electronic mass anisotropy of the materials [4][5][6][7]. However, the physical link between this intrinsic material anisotropy and (extrinsic) properties such as J c has not been made clear.…”

mentioning

confidence: 99%

The interpretation of the field angle dependence of the critical current in defect-engineered superconductors

Wimbush¹,

Long²

2012

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…That pϭ0.22 implies the coexistence of various categories of pinning centers for such a configuration. Moreover, the relation exhibits two sections with distinct slopes at 75 K, showing that a crossover of collective pinning from a nonlocal to a local regime occurs near Hϭ1.3 T at 75 K. 23 In order to clarify the behavior of the relation h p (1 Ϫh) q /J c vs H at 63 K, the data at 63 K are replotted in the inset of Fig. 4͑a͒.…”

Section: Comparison Of the Critical State Model With Experimental mentioning

confidence: 99%

Anisotropy and field dependence of critical current density in YBa2Cu3O7−δ epitaxial thin film

Cao

¹

,

Wang

²

,

Fang

³

et al. 1997

Journal of Applied Physics

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

Angular dependence of the critical current density for epitaxial YBa2Cu3O7-σ thin film

Cited by 15 publications

References 9 publications

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

The interpretation of the field angle dependence of the critical current in defect-engineered superconductors

Anisotropy and field dependence of critical current density in YBa2Cu3O7−δ epitaxial thin film

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Angular dependence of the critical current density for epitaxial YBa2Cu3O7-σ thin film

Cited by 15 publications

References 9 publications

Epitaxial superconducting GdBa2Cu3O7−δ /Gd2O3 nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa2Cu3O7−δ /Gd2O3 nanocomposite thin films from advanced low-fluorine solutions

The interpretation of the field angle dependence of the critical current in defect-engineered superconductors

Anisotropy and field dependence of critical current density in YBa2Cu3O7−δ epitaxial thin film

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Product

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Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions