Evidence for composition variations and impurity segregation at grain boundaries in high current-density polycrystalline K- and Co-doped BaFe2As2 superconductors

2014 ◽  
Vol 105 (16) ◽  
pp. 162604 ◽  
Author(s):  
Yoon-Jun Kim ◽  
Jeremy D. Weiss ◽  
Eric E. Hellstrom ◽  
David C. Larbalestier ◽  
David N. Seidman
Keyword(s):  
Grain Boundaries ◽  
Current Density ◽  
High Current Density ◽  
High Current ◽  
Impurity Segregation ◽  
Co Doped

Void Elongation Phenomena Observed in Polycrystalline Cu Interconnects at a High Current Density Stressing Conditions

1997 ◽  
Vol 473 ◽  
Author(s):  
S. Shingubara ◽  
S. Kajiwara ◽  
T. Osaka ◽  
H. Sakaue ◽  
T. Takahagi
Keyword(s):  
Image Analysis ◽  
Electric Field ◽  
Grain Boundaries ◽  
Morphological Change ◽  
Current Density ◽  
Elevated Temperatures ◽  
High Current Density ◽  
High Current ◽  
Cu Interconnects ◽  
Electric Field Direction

ABSTRACTFormation and morphological change of voids induced by electromigration in polycrystalline Cu interconnects on TiN have been investigated at various current density conditions at elevated temperatures. At first voids were formed at grain boundaries, then they grew further to elongate in the electric field direction. Void elongation parameter (a ratio of void diameters in longitudinal to lateral directions to the electric field) was 2.53 when the current density was 9×106A/cm2, while it was 1.31 when the current density was 3×106A/cm2at 400°C, 50h. Occurrence of void elongation is enhanced with increase in current density, and its relationship to grain boundaries are discussed by FIB-SIM image analysis.

Constructing B and N separately co-doped carbon nanocapsules-wrapped Fe/Fe3C for oxygen reduction reaction with high current density

2016 ◽  
Vol 18 (38) ◽  
pp. 26572-26578 ◽  
Author(s):  
He Feng ◽  
Lei Wang ◽  
Lu Zhao ◽  
Chungui Tian ◽  
Peng Yu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Current Density ◽  
High Current Density ◽  
Low Cost ◽  
Reduction Reaction ◽  
High Current ◽  
Highly Efficient ◽  
Carbon Nanocapsules ◽  
Co Doped

The exploration of low-cost and highly efficient non-platinum electrocatalysts for the oxygen reduction reaction (ORR) is vital for renewable systems.

Three-dimensional porous copper-decorated bismuth-based nanofoam for boosting electrochemical reduction of CO2 to formate

2021 ◽  
Author(s):  
Yingchun Zhang ◽  
Changsheng Cao ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
High Current ◽  
Porous Copper ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction ◽  
Wide Potential

Bismuth (Bi)-based nanomaterials are considered as the promising electrocatalysts for electrocatalytic CO2 reduction reaction (CO2RR), but it is challenging to achieve high current density and selectivity in a wide potential...

Cu-Doped Alloy Layer Guiding Uniform Li Deposition on a Li–LLZO Interface under High Current Density

2021 ◽  
Author(s):  
Xia He ◽  
Fei Yan ◽  
Mingyuan Gao ◽  
Yunjing Shi ◽  
Guanglong Ge ◽  
...  
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Alloy Layer ◽  
High Current

Implementation of Trigger Unit for Generation of High-Current-Density Electron Beam

2021 ◽  
pp. 1-6
Author(s):  
Anand Abhishek ◽  
Niraj Kumar ◽  
Udit Narayan Pal ◽  
Bhim Singh ◽  
S. A. Akbar
Keyword(s):  
Electron Beam ◽  
Current Density ◽  
High Current Density ◽  
High Current
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