Oxygen tracer diffusion through BaF2and MgO overcoats on YBa2Cu3O7−Δ

1991 ◽  
Vol 59 (6) ◽  
pp. 724-726 ◽  
Author(s):  
S. B. Wong ◽  
J. J. Vajo ◽  
A. T. Hunter ◽  
C. W. Nieh
Keyword(s):  
Tracer Diffusion ◽  
Oxygen Tracer

Limits to the rate of oxygen transport in mixed-conducting oxides

2017 ◽  
Vol 5 (38) ◽  
pp. 20334-20350 ◽  
Author(s):  
Roger A. De Souza
Keyword(s):  
Oxygen Transport ◽  
Tracer Diffusion ◽  
Surface Exchange ◽  
Conducting Oxides ◽  
Oxygen Surface Exchange ◽  
Oxygen Tracer ◽  
Oxygen Surface

Chemically reasonable limits to the rates of oxygen tracer diffusion and oxygen surface exchange in acceptor-doped oxides are examined.

Oxygen diffusion in amorphous and partially crystalline gallium oxide

2019 ◽  
Vol 21 (8) ◽  
pp. 4268-4275 ◽  
Author(s):  
Alexandra von der Heiden ◽  
Manuel Bornhöfft ◽  
Joachim Mayer ◽  
Manfred Martin
Keyword(s):  
Activation Energy ◽  
Diffusion Coefficients ◽  
Low Temperatures ◽  
Oxygen Diffusion ◽  
Gallium Oxide ◽  
Tracer Diffusion ◽  
Tof Sims ◽  
Tracer Diffusion Coefficients ◽  
Oxygen Tracer

We established a TTT diagram of crystallisation of gallium oxide. Determination of oxygen tracer diffusion coefficients by IEDP/ToF-SIMS allowed us to access the activation energy for amorphous GaO1.5 at low temperatures.

Oxygen tracer diffusion in the YBa2Cu3Oy superconductor

2001 ◽  
Vol 351 (4) ◽  
pp. 357-362 ◽  
Author(s):  
S. Tsukui ◽  
M. Adachi ◽  
R. Oshima ◽  
H. Nakajima ◽  
F. Toujou ◽  
...  
Keyword(s):  
Tracer Diffusion ◽  
Oxygen Tracer

Oxygen Tracer Diffusion in Sol-Gel Derived Pb(Zr,Ti)O3 thin Films

1993 ◽  
Vol 310 ◽  
Author(s):  
John J. Vajo ◽  
L.A. Momoda ◽  
S.B. Wong ◽  
G.S. Kamath
Keyword(s):  
Thin Films ◽  
Oxygen Diffusion ◽  
Sol Gel ◽  
Finite Thickness ◽  
Tracer Diffusion ◽  
Pzt Films ◽  
Gel Technique ◽  
Low Levels ◽  
Secondary Ion ◽  
Oxygen Tracer

AbstractWe have studied oxygen diffusion in thin films of Pb(Zr,Ti)O3 on Pt/Ti/SiO2/Si <100> multilayer substrates using 18O as a tracer. The PZT films were synthesized using the sol-gel technique and crystallized in air at 650° C for 30 minutes. Diffusion experiments were conducted in one atmosphere of 18O2 at tmipertures between 400-600°C, the extent of exchange was monitored using secondary ion mass spectromentry. Exchange profiles were modeled using solutions of the diffusion equation with boundary conditions for a layer with finite thickness. Significant exchange (>60%) of 16O by 18O was measured after treatment under conditions similar to those used for crystallization. At low levels of exchange, oxygen diffusion does not follow a simple Fickian profile and differences exist between nominally identical films. These results suggest that oxygen exchange is sensitive to the film's microstructure.

Oxygen Tracer Diffusion in Single-Crystal CaTiO3

1996 ◽  
Vol 124 (1) ◽  
pp. 195-197 ◽  
Author(s):  
Isao Sakaguchi ◽  
Hajime Haneda
Keyword(s):  
Single Crystal ◽  
Tracer Diffusion ◽  
Oxygen Tracer

Visualization of Grain Boundary as Blocking Layer for Oxygen Tracer Diffusion and a Proposed Defect Model in Non Doped BaTiO3Ceramics

2011 ◽  
Vol 4 (5) ◽  
pp. 055801 ◽  
Author(s):  
Ken Watanabe ◽  
Isao Sakaguchi ◽  
Shunichi Hishita ◽  
Naoki Ohashi ◽  
Hajime Haneda
Keyword(s):  
Grain Boundary ◽  
Tracer Diffusion ◽  
Blocking Layer ◽  
Defect Model ◽  
Oxygen Tracer

Oxygen nonstoichiometry, defect structure and oxygen diffusion in the double perovskite GdBaCo2O6−δ

2014 ◽  
Vol 43 (42) ◽  
pp. 15937-15943 ◽  
Author(s):  
D. S. Tsvetkov ◽  
M. V. Ananjev ◽  
V. A. Eremin ◽  
A. Yu. Zuev ◽  
E. Kh. Kurumchin
Keyword(s):  
Diffusion Coefficient ◽  
Double Perovskite ◽  
Tracer Diffusion ◽  
Oxygen Nonstoichiometry ◽  
Tracer Diffusion Coefficient ◽  
Self Diffusion ◽  
Polarization Technique ◽  
Dc Polarization ◽  
Oxygen Tracer ◽  
Self Diffusion Coefficient

The values of the oxygen self-diffusion coefficient measured by the dc-polarization technique completely coincide with those of the oxygen tracer diffusion coefficient.

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