Spectroscopic examinations of surface stability of high-temperature superconductors
Creators
- 1. Department of Chemical Engineering and Materials Sciences, University of Minnesota, Minneapolis, MN 55455
Description
The surface stabilities of La/sub 1.85/Sr/sub 0.15/CuO4 and YBa2Cu3O/sub 6.9/ have been studied for samples exposed to ultrahigh vacuum, oxygen, ∼1500 eV electron bombardment, and zero order synchrotron radiation. Oxygen chemisorption saturates by 10 L and induces energy states ∼1.6 eV above E/sub F/. High energy electron bombardment eliminates this structure for La/sub 1.85/Sr/sub 0.15/CuO4 but not for YBa2Cu3O6/sub ./9. The effects of monochromatic photon irradiation for uv or x-ray beams are negligible, but surface modifications are observed when the sample is exposed to the zero-order white beam generated by the Aladdin synchrotron radiation source. The surface modifications are related to BaCO3 residuals, probably in grain boundaries of the polycrystalline samples
Additional details
Publishing Information
- Journal Title
- AIP Conf. Proc.
- Journal Volume
- 165
- Journal Issue
- 1
- Series
- AIP Conf. Proc.
- Journal Page Range
- 368-373
- ISSN
- 0094-243X
- CODEN
- APCPC
Conference
- Title
- Thin film processing and characterization of high temperature superconductors.
- Dates
- 6 Nov 1987.
- Place
- Anaheim, CA (USA).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19099212
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BARIUM COMPOUNDS; CHEMISORPTION; COPPER OXIDES; ELECTRON BEAMS; KEV RANGE 01-10; LANTHANUM COMPOUNDS; OXYGEN; PHOTOEMISSION; PHYSICAL RADIATION EFFECTS; STABILITY; STRONTIUM COMPOUNDS; SURFACE PROPERTIES; SYNCHROTRON RADIATION; ULTRAHIGH VACUUM; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BEAMS; BREMSSTRAHLUNG; CHALCOGENIDES; CHEMICAL REACTIONS; COPPER COMPOUNDS; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; ENERGY RANGE; KEV RANGE; LEPTON BEAMS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; RADIATION EFFECTS; RADIATIONS; RARE EARTH COMPOUNDS; SECONDARY EMISSION; SEPARATION PROCESSES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-871178--.