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Characterization of binary Ce-Ir alloy photocathodes
- Source :
- Japanese Journal of Applied Physics; January 2019, Vol. 58 Issue: 1 pSIIB10-SIIB10, 1p
- Publication Year :
- 2019
-
Abstract
- Binary Ce-Ir alloys nominally containing 83, 78, 75, and 67 at% Ir were grown via arc melting in order to clarify the optimum composition for a Ce-Ir system to be used as photocathode material. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) analysis were employed to characterize the microstructure and phase composition of these alloys. The results of the XRD analyses and SEM/EDX measurements indicated that single-phase homogeneous crystals composed of CeIr2 grains were successfully grown in the sample with an iridium content amounting to 67 at%. Through quantum efficiency (QE) measurements, it was revealed that the QE of the Ce-67 at% Ir alloy (CeIr2 phase) is a few times higher than that of the other Ce-Ir alloys.
Details
- Language :
- English
- ISSN :
- 00214922 and 13474065
- Volume :
- 58
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Japanese Journal of Applied Physics
- Publication Type :
- Periodical
- Accession number :
- ejs50384918