Study of oxygen transport in Ba2YCu3O7-δ using a solid-state electrochemical cell

O’Sullivan, Eugene J. M.; Chang, Bertha P.
April 1988
Applied Physics Letters;4/25/1988, Vol. 52 Issue 17, p1441
Academic Journal
A solid-state electrochemical oxygen concentration cell with yttria-stabilized zirconia (YSZ) as electrolyte was employed to study oxygen transport in Ba2YCu3O7-δ . On one side of the YSZ [a single-crystal wafer oriented in the (100) plane], reference and counter electrodes were fabricated from sputtered Au. A ceramic pellet of Ba2YCu3O7-δ was pressed against the other side of the electrolyte. Using this cell, it was possible to electrochemically drive oxygen into and out of the Ba2YCu3O7-δ oxide electrode under controlled conditions. Current versus time and open circuit potential recovery data were analyzed according to various models. The diffusivity of oxygen in 94% dense Ba2YCu3O7-δ was estimated to [bar_over_tilde:_approx._equal_to]5×10-8 cm2 s-1 at 550 °C.


Related Articles

  • Effect of oxygen partial pressure on the transformation between high Tc and low Tc phases in a Bi-Pb-Sr-Ca-Cu-O system. Lee, H. K.; Lee, K. W.; Ha, D. H.; Park, K.; Park, J. C. // Applied Physics Letters;9/18/1989, Vol. 55 Issue 12, p1249 

    The effect of oxygen partial pressure on the stability of the high Tc phase (>100 K) in a Bi-Pb-Sr-Ca-Cu-O system has been studied using resistivity, x-ray diffraction, and ac susceptibility measurements. It was observed that part of the high Tc phase formed by sintering at 840 °C in a low...

  • Equilibrium oxygen potential for the decomposition of YBa2Cu4O8. Mathews, Tom; Jacob, K. T. // Applied Physics Letters;7/30/1990, Vol. 57 Issue 5, p511 

    On lowering the chemical potential of diatomic oxygen, the compound YBa2Cu4O8 was found to decompose into a mixture of YBa2Cu3O6+x and CuO. The equilibrium oxygen potential corresponding to this decomposition has been measured from 870 to 1150 K using a solid-state cell incorporating...

  • Interpretation of Isotope Exchange Data “without Time”: Nonisothermal Exchange of Dioxygen with Oxides1. Muzykantov, V. S.; Kemnitz, E.; Sadykov, V. A.; Lunin, V. V. // Kinetics & Catalysis;May2003, Vol. 44 Issue 3, p319 

    As a result of transformation of isotope-exchange rate equations (isotope-kinetic equations), a relationship was derived that does not contain time and universally relates the variables of isotope composition (an isotope-mechanistic equation). With the use of this relationship, mechanistic...

  • Angle-dependent laser-induced voltages in room-temperature polycrystalline wafers of YBa2Cu3O7-x. Tate, K. L.; Hilinski, E. F.; Foster, S. C. // Applied Physics Letters;12/3/1990, Vol. 57 Issue 23, p2407 

    Room-temperature laser-induced voltages were observed in unsupported, polycrystalline wafers of YBa2Cu3O7-x in the absence of a transport current. Peak voltages of ∼1 V were detected in response to 40 mJ pulses of 532 nm light. The rise and fall times for the signals were detector limited....

  • Single-crystal preparation and some characterizations of the superconducting Y-Ba-Cu oxide. Haneda, Hajime; Isobe, Mitsumasa; Hishita, Shunichi; Ishizawa, Yoshio; Shirasaki, Shin-ichi; Yamamoto, Taisei; Yanagitani, Takagimi // Applied Physics Letters;11/30/1987, Vol. 51 Issue 22, p1848 

    Single crystals of Ba2YCu3O7-δ were prepared from melts of a BaO-Y2O3-CuO mixture and characterized by the x-ray microprobe analyzer and x-ray diffraction. Electrical resistivity was measured by the standard four-terminal method. Some crystals have the critical temperature above 77 K. After...

  • Structural characterization of a TlCaBaCu oxide in Tc onset=155 K and Tc zero=123 K superconducting specimens. Liang, J. M.; Liu, R. S.; Chang, L.; Wu, P. T.; Chen, L. J. // Applied Physics Letters;10/10/1988, Vol. 53 Issue 15, p1434 

    The crystal structure of a Tl-Ca-Ba-Cu-O compound in Tc onset=155 K and Tc zero=123 K superconducting specimens was characterized by transmission electron microscopy. Convergent beam electron diffraction analysis established that the phase is of P4/mcc space group. The lattice parameters of the...

  • Properties of Bi(Pb)-Sr-Ca-Cu-O superconducting tapes prepared by the doctor-blade process. Yanagisawa, E.; Morimoto, T.; Dietderich, D. R.; Kumakura, H.; Togano, K.; Maeda, H. // Applied Physics Letters;6/19/1989, Vol. 54 Issue 25, p2602 

    Improved superconducting and mechanical properties were obtained for Bi(Pb)-Sr-Ca-Cu-O tapes, prepared by the combined process of doctor-blade casting, cold rolling, and sintering. The tape has an oriented microstructure with the high Tc plate-like grains having their c axes perpendicular to the...

  • Effect of Li doping on the critical temperature and glass formation in the Bi�Sr�Ca�Cu�O system. Volkov, M. P.; Melekh, B. T.; Bakharev, V. I.; Kartenko, N. F.; Matykin, N. V.; Filin, Yu. N. // Physics of the Solid State;Jan99, Vol. 41 Issue 1, p15 

    A study has been made of the glass-forming ability, structure, and superconducting properties of Bi[sub 2.2]Sr[sub 1.8]Ca[sub 1.05]Cu[sub 2.15]Li[sub x]O[sub y] and Bi[sub 2.2]Sr[sub 1.8]Ca[sub 1.05]Cu[sub 2.15 - x]Li[sub x]O[sub y] (x = 0; 0.3; 0.5; 0.7). The compounds were melted by rf at T =...

  • Synthesis of a Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub y] high-temperature superconducting phase with T[sub c][sup °] above 100 K. Tomilo, Zh. M.; Prytkova, N. A.; Gololobov, E. M.; Turtsevich, D. M. // Technical Physics Letters;Jun97, Vol. 23 Issue 6, p422 

    A high-temperature superconductor with the Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub y] structure and a superconducting transition temperature T[sup º, sub c] = 102-107 K has been synthesized. The synthesis conditions are described and results of a phase analysis, and of resistive and inductive...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics