Enhanced Critical Current Density in the Carbon-Ion Irradiated MgB2 Thin Films

2019 ◽  
Vol 88 (3) ◽  
pp. 034716 ◽  
Author(s):  
Soon-Gil Jung ◽  
Seung-Ku Son ◽  
Duong Pham ◽  
Won Nam Kang ◽  
Weon Cheol Lim ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Carbon Ion ◽  
Mgb2 Thin Films

Effects of surface damage on critical current density in MgB2 thin films

2021 ◽  
Vol 22 ◽  
pp. 14-19
Author(s):  
Soon-Gil Jung ◽  
Duong Pham ◽  
Jung Min Lee ◽  
Yoonseok Han ◽  
Won Nam Kang ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Surface Damage ◽  
Mgb2 Thin Films

scholarly journals High critical current density and enhanced irreversibility field in superconducting MgB2 thin films

Nature ◽  
2001 ◽  
Vol 411 (6837) ◽  
pp. 558-560 ◽  
Author(s):  
C. B. Eom ◽  
M. K. Lee ◽  
J. H. Choi ◽  
L. J. Belenky ◽  
X. Song ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Irreversibility Field ◽  
High Critical Current Density ◽  
Mgb2 Thin Films

scholarly journals Increase in the infield critical current density of MgB2 thin films by high-temperature post-annealing

2021 ◽  
Vol 14 (2) ◽  
pp. 025504
Author(s):  
Hiroto Kambe ◽  
Iwao Kawayama ◽  
Naoya Kitamura ◽  
Ataru Ichinose ◽  
Takumu Iwanaka ◽  
...  
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Post Annealing ◽  
Mgb2 Thin Films

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

2011 ◽  
Vol 2 ◽  
pp. 809-813 ◽  
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.

Enhancement at low temperatures of the critical current density for Au-coated MgB2 thin films

2004 ◽  
Vol 84 (1) ◽  
pp. 82-84 ◽  
Author(s):  
Eun-Mi Choi ◽  
Hyun-Sook Lee ◽  
Heon-Jung Kim ◽  
Sung-Ik Lee ◽  
Hyeong-Jin Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Low Temperatures ◽  
Mgb2 Thin Films

Enhanced critical current density of MgB2 thin films deposited at low temperatures by ZnO seed impurity

2018 ◽  
Vol 18 (6) ◽  
pp. 762-766 ◽  
Author(s):  
Duong Pham ◽  
Huynh Van Ngoc ◽  
Soon-Gil Jung ◽  
Dae Joon Kang ◽  
Won Nam Kang
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Low Temperatures ◽  
Mgb2 Thin Films

Microstructural characterization of YBa2Cu3O7-x thin films formed by metalorganic CVD

1991 ◽  
Vol 49 ◽  
pp. 1080-1081
Author(s):  
P. Lu ◽  
W. Huang ◽  
C.S. Chern ◽  
Y.Q. Li ◽  
J. Zhao ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Film Growth ◽  
Chemical Vapor ◽  
Microstructural Characterization ◽  
Ion Milling ◽  
Conventional Grinding

The YBa2Cu3O7-x thin films formed by metalorganic chemical vapor deposition(MOCVD) have been reported to have excellent superconducting properties including a sharp zero resistance transition temperature (Tc) of 89 K and a high critical current density of 2.3x106 A/cm2 or higher. The origin of the high critical current in the thin film compared to bulk materials is attributed to its structural properties such as orientation, grain boundaries and defects on the scale of the coherent length. In this report, we present microstructural aspects of the thin films deposited on the (100) LaAlO3 substrate, which process the highest critical current density.Details of the thin film growth process have been reported elsewhere. The thin films were examined in both planar and cross-section view by electron microscopy. TEM sample preparation was carried out using conventional grinding, dimpling and ion milling techniques. Special care was taken to avoid exposure of the thin films to water during the preparation processes.

Characterization of Epitaxial Superconducting YBacuO Thin Films with Three Different Orientations

1989 ◽  
Vol 169 ◽  
Author(s):  
X.K. Wang ◽  
D.X. Li ◽  
S.N. Song ◽  
J.Q. Zheng ◽  
R.P.H. Chang ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Orientation Dependence ◽  
Zero Field ◽  
Epitaxial Thin Films ◽  
Oriented Film ◽  
Zero Resistance ◽  
Xrd Patterns

AbstractEpitaxial thin films of YBaCuO were prepared by multilayer deposition from Y, Cu, and BaF2 sources with: (1) the a‐axis perpendicular to (100)SrTiO3; (2) the c‐axis perpendicular to (100)SrTiO3; and (3) the [110] axis perpendicular to (110)SrTiO3. XRD patterns as well as SEM and HREM images confirm that the films are highly oriented, essentially epitaxial. Both the a‐axis oriented and the c‐axis oriented films exhibit zero resistance at 91K. The [110] oriented film shows the sharpest transiton with a transition width of IK and zero resistance at 85K. The zero field critical current density, Jc, determined magnetically, is in excess of 107A/cm2 at 4.4K and 1.04 x 106A/cm2 at 77K for the c‐axis oriented film; for the a‐axis oriented film we obtained 6.7 x 106A/cm2 at 4.4K and 1.2 x 105A/cm2 at 77K. The orientation dependence of the critical current density in the basal plane of the a‐axis oriented film was studied. The largest Jc's occur along the in‐plane <100> axes of the substrate.

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