An MgB2 Superconducting Joint with its Own Heat-Treatment Schedule

Author(s):  
Hiromi Tanaka ◽  
Yi Li ◽  
Yoonhyuck Choi ◽  
Dongkeun Park ◽  
Wooseung Lee ◽  
...  
1979 ◽  
Vol 36 (1) ◽  
pp. 24-27
Author(s):  
V. Yu. Goikhman ◽  
N. I. Min'ko ◽  
Yu. A. Shitts

2016 ◽  
Vol 88 (4) ◽  
pp. 1600213 ◽  
Author(s):  
Hamid Ashrafi ◽  
Sorour Sadeghzade ◽  
Rahmatollah Emadi ◽  
Morteza Shamanian

2008 ◽  
Vol 39-40 ◽  
pp. 219-224 ◽  
Author(s):  
Olga Dymshits ◽  
Alexander Shashkin ◽  
Alexander A. Zhilin ◽  
Yury Volk ◽  
Alexander Malyarevich ◽  
...  

Compositions and heat treatment conditions were determined at which absorption and luminescence properties of aluminosilicate transparent glass-ceramics are defined mainly by tetrahedrally coordinated Co2+ ions located in spinel nanocrystals. Optical properties of cobaltdoped aluminosilicate transparent glass-ceramics have been studied in visible – near infrared (IR) spectral range. It was demonstrated that the concentration of tetrahedrally coordinated Co2+ ions in the spinel nanocrystals is determined by the CoO content in the initial glass and is independent of the heat-treatment schedule. Absorption saturation and bleaching relaxation under excitation of the 4A2→4T1(4F) transition of tetrahedrally coordinated Co2+ ions were studied. The value of groundstate and excited state absorption cross-sections of tetrahedrally coordinated Co2+ ions was estimated. Comparative study of output pulse parameters of Q-switched Er:glass laser using cobaltdoped glass-ceramics and Co2+:MgAl2O4 single crystal is presented.


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