Title :
Optical and thermal response of thick YBCO-Bismuth junctions
Author :
Kaila, M.M. ; Cochrane, J.W. ; Russell, G.J.
Author_Institution :
Sch. of Phys., New South Wales Univ., Sydney, NSW, Australia
Abstract :
Thick (50 micron) films of YBCO (Yttrium Barium Copper Oxide) and Bismuth were prepared as a two-stage thermopile and single stage junctions on Zirconia substrates. The critical temperature of the YBCO films was found to be 85 K. The thermal and optical response of the junctions were studied using a He-Ne Laser of 10 mW power. In the two-stage thermopile (T-sT) configuration, in thermal response, a signal of 20 μV was observed for the junction near the critical temperature, corresponding to a temperature difference of a fraction of a degree. In the single stage geometry (S-sG) no significant thermal voltages were found near Tc but photothermionic transitions were observed
Keywords :
barium compounds; bismuth; high-temperature superconductors; superconducting junction devices; superconducting thin films; thermoelectric devices; thermopiles; thick films; yttrium compounds; He-Ne laser; YBaCuO-Bi; critical temperature; optical response; photothermionic transition; single-stage junction; thermal response; thick film; two-stage thermopile; zirconia substrate; Bismuth; Heat transfer; High temperature superconductors; Josephson junctions; Leg; Optical films; Substrates; Superconducting films; Voltage; Yttrium barium copper oxide;
Conference_Titel :
Optoelectronic and Microelectronic Materials And Devices Proceedings, 1996 Conference on
Conference_Location :
Canberra, ACT
Print_ISBN :
0-7803-3374-8
DOI :
10.1109/COMMAD.1996.610165
