Effect of high pressure on the electrical resistivity behaviour of (Pb0.5,Cd0.5)Sr2(Y1-x,Cax)-Cu2O7-δ/Ag2O superconducting composites

2000 ◽  
Vol 13 (8) ◽  
pp. 1258-1263
Author(s):  
B Latha ◽  
T S Subbaraman ◽  
S Natarajan ◽  
T S Sampath Kumar
2005 ◽  
Vol 66 (10) ◽  
pp. 1621-1627 ◽  
Author(s):  
P. Thangadurai ◽  
A. Chandra Bose ◽  
S. Ramasamy ◽  
R. Kesavamoorthy ◽  
T.R. Ravindran

2005 ◽  
Vol 86 (6) ◽  
pp. 064104 ◽  
Author(s):  
Yonghao Han ◽  
Chunxiao Gao ◽  
Yanzhang Ma ◽  
Hongwu Liu ◽  
Yuewu Pan ◽  
...  

2005 ◽  
Vol 59 (14-15) ◽  
pp. 1764-1766 ◽  
Author(s):  
R. Selva Vennila ◽  
N. Victor Jaya ◽  
S. Natarajan

1997 ◽  
Vol 296 (1) ◽  
pp. 255-268 ◽  
Author(s):  
Toshihiro Hiejima ◽  
Kyuya Yakushi ◽  
Takafumi Adachi ◽  
Osamu Shimomura ◽  
Keiki Takeda ◽  
...  

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Wenshu Shen ◽  
Tianji Ou ◽  
Jia Wang ◽  
Tianru Qin ◽  
Guozhao Zhang ◽  
...  

2019 ◽  
Vol 33 (04) ◽  
pp. 1950039
Author(s):  
G. Ya. Khadzhai ◽  
N. R. Vovk ◽  
R. V. Vovk ◽  
I. L. Goulatis ◽  
O. V. Dobrovolskiy

The effect of high hydrostatic pressure on the relaxation of the electrical resistivity at room temperature of oxygen-nonstoichiometric [Formula: see text] (Re = Y, Ho) single crystals is investigated. The application of hydrostatic pressure has been revealed to significantly intensify the process of diffusion coalescence in the oxygen subsystem. At the same time, the intensity of the redistribution of labile oxygen is significantly changed when yttrium is replaced by holmium.


2019 ◽  
Vol 34 (01) ◽  
pp. 2050006
Author(s):  
Lisha Xue ◽  
Chao Fang ◽  
Weixia Shen ◽  
Manjie Shen ◽  
Wenting Ji ◽  
...  

High-pressure technique is an effective route to synthesize thermoelectric materials and tune transport properties simultaneously. In this work, S-doped copper–selenium compounds [Formula: see text], [Formula: see text] were successfully synthesized by high-pressure and high-temperature (HPHT) technology in just 30 min. [Formula: see text] samples show layered morphology composed of abundant pores and lattice defects. The appropriate S introduction ([Formula: see text] and 0.03) can effectively enhance Seebeck coefficient and reduce the thermal conductivity of [Formula: see text]. Compared with the pure [Formula: see text] sample, [Formula: see text] exhibits a 30% lower thermal conductivity, but the decline of power factor by the distinctly increased electrical resistivity at high temperature results in a smaller zT at temperature [Formula: see text] K. The variations of thermoelectric properties are resulted from the competitive effects between S-doping and actual composition change (Cu:S). It indicates that S-doping is not so effective in improving the zT value of [Formula: see text] materials by high-pressure synthesis.


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