scholarly journals Ionic cluster effect in suppression of superconductivity in Ni- and Co-doped YBCO systems

2008 ◽  
Vol 34 (3) ◽  
pp. 168-172 ◽  
Author(s):  
A. Wang ◽  
X. Wang ◽  
Y. Cao ◽  
X. Li ◽  
Y. Wang ◽  
...  
Keyword(s):  
Cluster Effect ◽  
Ionic Cluster ◽  
Co Doped ◽  
Ybco Systems

Ionic Cluster Effect in Suppression on Superconductivity in Doped Y123

2007 ◽  
pp. 2119-2121
Author(s):  
Ping Lin Li ◽  
Ai Hua Wang ◽  
Yong Tao Tian ◽  
Xiao Xia Wang ◽  
Yong Ji ◽  
...  
Keyword(s):  
Cluster Effect ◽  
Ionic Cluster

Ionic Cluster Effect in Suppression on Superconductivity in Doped Y123

2007 ◽  
Vol 546-549 ◽  
pp. 2119-2121 ◽  
Author(s):  
Ping Lin Li ◽  
Ai Hua Wang ◽  
Yong Tao Tian ◽  
Xiao Xia Wang ◽  
Yong Ji ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Electron Density ◽  
Cluster Effect ◽  
Local Electron ◽  
Local Electron Density ◽  
Ionic Cluster

Positron annihilation technology and simulation analyses are used to investigate the doped YBCO. The results suggest that Co ionic cluster effect is stronger than Al in YBCO. The cluster effect not only causes the local electron density to reach the saturation, but also suppresses the superconductivity significantly.

970 nm Infrared to Visible Upconversion in Er3+ and Yb3+ Co-Doped PLZT Glass Ceramic Thin Films

2008 ◽  
Author(s):  
Xiaomei Guo ◽  
Kewen Kevin. Li ◽  
Xuesheng Chen ◽  
Yingyin Kevin. Zou ◽  
Hua Jiang
Keyword(s):  
Thin Films ◽  
Glass Ceramic ◽  
Ceramic Thin Films ◽  
Co Doped

Tunable Carbon Surface from Mono- to Multi-Metallic Single Atoms

2020 ◽  
Author(s):  
Weihong Lai ◽  
Heng Wang ◽  
Quan jiang ◽  
Zichao Yan ◽  
Hanwen Liu ◽  
...  
Keyword(s):  
Synergistic Effects ◽  
Structural Evolution ◽  
Charge Compensation ◽  
Catalytic Reactions ◽  
Single Atom ◽  
Carbon Surface ◽  
Hydrogen Electrode ◽  
Single Atoms ◽  
Mass Activity ◽  
Co Doped

<p>Herein, we develop a non-selective charge compensation strategy to prepare multi-single-atom doped carbon (MSAC) in which a sodium p-toluenesulfonate (PTS-Na) doped polypyrrole (S-PPy) polymer is designed to anchor discretionary mixtures of multiple metal cations, including iron (Fe<sup>3+</sup>), cobalt (Co<sup>3+</sup>), ruthenium (Ru<sup>3+</sup>), palladium (Pd<sup>2+</sup>), indium (In<sup>3+</sup>), iridium (Ir<sup>2+</sup>), and platinum (Pt<sup>2+</sup>) . As illustrated in Figure 1, the carbon surface can be tuned with different level of compositional complexities, including unary Pt<sub>1</sub>@NC, binary (MSAC-2, (PtFe)<sub>1</sub>@NC), ternary (MSAC-3, (PtFeIr)<sub>1</sub>@NC), quaternary (MSAC-4, (PtFeIrRu)<sub>1</sub>@NC), quinary (MSAC-5, (PtFeIrRuCo)<sub>1</sub>@NC), senary (MSAC-6, (PtFeIrRuCoPd)<sub>1</sub>@NC), and septenary (MSAC-7, (PtFeIrRuCoPdIn)<sub>1</sub>@NC) samples. The structural evolution of carbon surface dictates the activities of both ORR and HER. The senary MSAC-6 achieves the ORR mass activity of 18.1 A·mg<sub>metal</sub><sup>-1</sup> at 0.9 V (Vs reversible hydrogen electrode (RHE)) over 30K cycles, which is 164 times higher than that of commercial Pt/C. The quaternary MSAC-4 presented a comparable HER catalytic capability with that of Pt/C. These results indicate that the highly complexed carbon surface can enhance its ability over general electrochemical catalytic reactions. The mechanisms regarding of the ORR and HER activities of the alternated carbon surface are also theoretically and experimentally investigated in this work, showing that the synergistic effects amongst the co-doped atoms can activate or inactivate certain single-atom sites.</p>

Transport and magnetic properties of co-doped ferromagnetic semiconductor (In,Fe,Mn)As

2020 ◽  
Vol 13 (8) ◽  
pp. 083005
Author(s):  
Le Duc Anh ◽  
Taiki Hayakawa ◽  
Kohei Okamoto ◽  
Nguyen Thanh Tu ◽  
Masaaki Tanaka
Keyword(s):  
Magnetic Properties ◽  
Ferromagnetic Semiconductor ◽  
Co Doped

Upconversion Luminescence of MgSc2O4: Er3+/Yb3+ Nanocrystals Co-doped Alkali Ions

2020 ◽  
Vol 41 (11) ◽  
pp. 1351-1357
Author(s):  
Mei-juan YUANG ◽  
◽  
Jing LI ◽  
Hui-lian QIN ◽  
Ya-ru PENG ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Alkali Ions ◽  
Co Doped

Photoluminescence Properties of Eu2+, Dy3+, Li+ Co-doped CaSi2O2N2 Phosphors

2013 ◽  
Vol 27 (10) ◽  
pp. 1095-1098
Author(s):  
Ya-Jun LU ◽  
Hong-Zhi WANG ◽  
Yao-Gang LI ◽  
Qing-Hong ZHANG
Keyword(s):  
Photoluminescence Properties ◽  
Co Doped

Influence of N Dopant on the Electric and Magnetic Properties of Co Doped ZnO Thin Films

2010 ◽  
Vol 25 (7) ◽  
pp. 711-716 ◽  
Author(s):  
Xue-Tao WANG ◽  
Li-Ping ZHU ◽  
Zhi-Gao YE ◽  
Zhi-Zhen YE ◽  
Bing-Hui ZHAO
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Zno Thin Films ◽  
Doped Zno ◽  
Co Doped
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