Abstract
We have investigated the room-temperature oxygen depletion in the near-surface region of YBa2Cu3Ox samples kept under high vacuum. Results obtained from secondary-ion-mass-spectroscopy and four-probe-conductivity measurements are presented. The depletion process is limited by oxygen out diffusion in the samples with diffusion coefficients of 10-18-10-19 cm2/s. The reverse oxygen in-diffusion process occurs in oxygen atmosphere. The oxygen out-diffusion process can be accelerated by direct ultraviolet light (UV) irradiation of the samples in vacuum. The in-diffusion process is accelerated if UV light is used in oxygen atmosphere to produce ozone and atomic oxygen.
| Original language | English |
|---|---|
| Pages (from-to) | 6420-6423 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1994 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Direct measurements of room-temperature oxygen diffusion in YBa2Cu3Ox. / Mogilevsky, R.; Levi-Setti, R.; Pashmakov, B.; Liu, Li; Zhang, K.; Jaeger, H. M.; Buchholz, D. B.; Chang, Robert P. H.; Veal, B. W.
In: Physical Review B, Vol. 49, No. 9, 1994, p. 6420-6423.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Direct measurements of room-temperature oxygen diffusion in YBa2Cu3Ox
AU - Mogilevsky, R.
AU - Levi-Setti, R.
AU - Pashmakov, B.
AU - Liu, Li
AU - Zhang, K.
AU - Jaeger, H. M.
AU - Buchholz, D. B.
AU - Chang, Robert P. H.
AU - Veal, B. W.
PY - 1994
Y1 - 1994
N2 - We have investigated the room-temperature oxygen depletion in the near-surface region of YBa2Cu3Ox samples kept under high vacuum. Results obtained from secondary-ion-mass-spectroscopy and four-probe-conductivity measurements are presented. The depletion process is limited by oxygen out diffusion in the samples with diffusion coefficients of 10-18-10-19 cm2/s. The reverse oxygen in-diffusion process occurs in oxygen atmosphere. The oxygen out-diffusion process can be accelerated by direct ultraviolet light (UV) irradiation of the samples in vacuum. The in-diffusion process is accelerated if UV light is used in oxygen atmosphere to produce ozone and atomic oxygen.
AB - We have investigated the room-temperature oxygen depletion in the near-surface region of YBa2Cu3Ox samples kept under high vacuum. Results obtained from secondary-ion-mass-spectroscopy and four-probe-conductivity measurements are presented. The depletion process is limited by oxygen out diffusion in the samples with diffusion coefficients of 10-18-10-19 cm2/s. The reverse oxygen in-diffusion process occurs in oxygen atmosphere. The oxygen out-diffusion process can be accelerated by direct ultraviolet light (UV) irradiation of the samples in vacuum. The in-diffusion process is accelerated if UV light is used in oxygen atmosphere to produce ozone and atomic oxygen.
UR - http://www.scopus.com/inward/record.url?scp=0039951362&partnerID=8YFLogxK
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U2 - 10.1103/PhysRevB.49.6420
DO - 10.1103/PhysRevB.49.6420
M3 - Article
VL - 49
SP - 6420
EP - 6423
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 9
ER -