Padalia, B. D. ; Prabhawalkar, Varsha ; Prabhawalkar, P. D. ; Sampathkumaran, E. V. ; Gupta, L. C. ; Vijayaraghavan, R. (1981) ESCA studies of some mixed-valence rare-earth intermetallics Bulletin of Materials Science, 3 (2). pp. 163-167. ISSN 0250-4707
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Official URL: http://www.ias.ac.in/j_archive/bms/3/1/169-184/vie...
Related URL: http://dx.doi.org/10.1007/BF02908491
Abstract
ESCA (or XPS) studies of some rare-earth intermetallics were carried out using ESCA (3) Mark II and 'ESCALAB' machines from V G Scientific. The mixed valence nature of EuCu2Si2 and EuNi2P2 intermetallic compounds has been established. The 3d core-level photoemission spectra of Eu in EuCu2Si2 and EuNi2P2 exhibit two sets of structures corresponding to two different valence states of the rare-earth ions. Each of these sets shows simple spin-orbit splitting. The replicate splitting measured by us agrees well with those calculated by Herbst and Wilkins. The 3d core-level photoemission spectra of Eu is free from the multiplet splitting and satellite structure. The importance of 3d core-level photoemission studies in the understanding of valence fluctuation phenomenon has been emphasized.
Item Type: | Article |
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Source: | Copyright of this article belongs to Indian Academy of Sciences. |
Keywords: | Photoemission Spectra; ESCA; XPS; Rare Earth Intermetallics; Valence Fluctuation |
ID Code: | 92925 |
Deposited On: | 06 Jun 2012 13:42 |
Last Modified: | 19 May 2016 06:09 |
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