Degradation of the holmium-barium-copper oxide superconductor, HoBa{sub 2}Cu{sub 3}O{sub 6.92}, under the action of H{sub 2}O and D{sub 2}O: A study by the radiothermoluminescence method

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Russian Chemical Bulletin

DOI:https://doi.org/10.1007/BF01558090· OSTI ID:160330

Lotnik, S V; Khamidullina, L A; Korobeinikova, V N ^[1]

---

1. Institute of Organic Chemistry, Oktyabrya (Russian Federation); and others

Information about the existence of impurities and defects on the surfaces of high-T{sub c} superconductors (HTSC) can be obtained by radiothermoluminescence (RTL). The degradation of HTSC materials results from their interaction with water and CO{sub 2}. It has been established that the intensity of RTL is very insignificant for freshly prepared HTSC or for samples stored in a dry atmosphere. However, a large increase in RTL intensity occurs if specimens are in contact with water. Barium hydroxide, carbonate, and oxides make the largest contribution to RTL of superconducting ceramics with degraded surfaces. The RTL curves for Ba(OH){sub 2} and BaCO{sub 3} differ slightly from each other, which makes it difficult to estimate the contribution of each of them to the luminescence observed.

• Sponsoring Organization: USDOE
• OSTI ID: 160330
• Journal Information: Russian Chemical Bulletin, Journal Name: Russian Chemical Bulletin Journal Issue: 6 Vol. 43; ISSN 1066-5285; ISSN RCBUEY
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
BARIUM COMPOUNDS
CUPRATES
DECOMPOSITION
HEAVY WATER
HIGH-TC SUPERCONDUCTORS
HOLMIUM COMPOUNDS
RADIOTHERMOLUMINESCENCE
WATER