FeTe0.6Se0.4bulk single crystals with high critical current densities under magnetic fields

ABSTRACTChanges in critical current properties depending on growth temperature (Ts) were clarified for Ba-Nb-O-doped YBa2Cu3Oy (Y123) films deposited by YAG- and excimer-PLD. Due to the introduction of Ba-Nb-O-nanorods, a vortex-Bose-glass-like behavior emerged as irreversibility lines and in-field critical current densities (Jcs) were improved. Crossover magnetic fields (Bcr) and in-field Jcs increased with the increase in Ts for the Y123 films with nanorods. These Ts-dependent critical current properties were attributable to the changes in morphology of the nanorods with Ts and were independent of laser source in PLD apparatuses. For the fabrication of RE123 coated conductors containing nanorods, optimization of Ts with taking both materials of RE123 matrix and nanorod into account is necessary to achieve higher in-field Jc.

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The Anisotropy of Transport Critical Current Densities in Tl2Ba2Ca2Cu3OxThin Films under Magnetic Fields up to 20 T

Japanese Journal of Applied Physics ◽

10.1143/jjap.31.l1041 ◽

1992 ◽

Vol 31 (Part 2, No. 8A) ◽

pp. L1041-L1043 ◽

Cited By ~ 11

Author(s):

Toshihide Nabatame ◽

Kazuo Watanabe ◽

Satoshi Awaji ◽

Yukio Saito ◽

Katsuzo Aihara ◽

...

Keyword(s):

Magnetic Fields ◽

Critical Current ◽

Current Densities

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Substantial reduction of the anisotropy in the critical current densities J c of Ni-doped CaKFe4As4 single crystals by chemical and irradiation-induced disorder

Superconductor Science and Technology ◽

10.1088/1361-6668/abda5d ◽

2021 ◽

Vol 34 (3) ◽

pp. 035013

Author(s):

N Haberkorn ◽

M Xu ◽

W R Meier ◽

J Schmidt ◽

S Suárez ◽

...

Keyword(s):

Single Crystals ◽

Critical Current ◽

Substantial Reduction ◽

Current Densities

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Effects of post-growth heat treatment on electronic phase diagrams and critical current densities of Ba(Fe1−xCox)2As2 and BaFe2(As1−xPx)2 single crystals

Physical Review B ◽

10.1103/physrevb.98.054511 ◽

2018 ◽

Vol 98 (5) ◽

Author(s):

S. Ishida ◽

D. Kagerbauer ◽

D. Song ◽

H. Ogino ◽

A. Iyo ◽

...

Keyword(s):

Heat Treatment ◽

Phase Diagrams ◽

Single Crystals ◽

Critical Current ◽

Electronic Phase ◽

Current Densities

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Anion height dependence of critical current densities for Fe Te1-x Sex bulk single crystals

Journal of Physics Conference Series ◽

10.1088/1742-6596/1590/1/012013 ◽

2020 ◽

Vol 1590 ◽

pp. 012013

Author(s):

K Miyaki ◽

O Miura ◽

Y Mizuguchi

Keyword(s):

Single Crystals ◽

Critical Current ◽

Bulk Single Crystals ◽

Height Dependence ◽

Current Densities

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Enhancement of the critical current density in FeO-coated MgB2 thin films at high magnetic fields

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.2.89 ◽

2011 ◽

Vol 2 ◽

pp. 809-813 ◽

Cited By ~ 2

Author(s):

Andrei E Surdu ◽

Hassan H Hamdeh ◽

I A Al-Omari ◽

David J Sellmyer ◽

Alexei V Socrovisciuc ◽

...

Keyword(s):

Thin Films ◽

Magnetic Fields ◽

Critical Current Density ◽

Critical Current ◽

Current Density ◽

High Magnetic Fields ◽

Magnetization Hysteresis ◽

Current Densities ◽

Mgb2 Thin Films ◽

Feo Nanoparticles

The effect of depositing FeO nanoparticles with a diameter of 10 nm onto the surface of MgB2 thin films on the critical current density was studied in comparison with the case of uncoated MgB2 thin films. We calculated the superconducting critical current densities (J c) from the magnetization hysteresis (M–H) curves for both sets of samples and found that the J c value of FeO-coated films is higher at all fields and temperatures than the J c value for uncoated films, and that it decreases to ~105 A/cm2 at B = 1 T and T = 20 K and remains approximately constant at higher fields up to 7 T.

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