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Measurements of 3d occupancy from Cu L2,3 electron-energy-loss spectra of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu

Pearson, D. H. and Ahn, C. C. and Fultz, B. (1994) Measurements of 3d occupancy from Cu L2,3 electron-energy-loss spectra of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu. Physical Review B, 50 (17). pp. 12969-12972. ISSN 0163-1829. http://resolver.caltech.edu/CaltechAUTHORS:PEAprb94

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Abstract

We used electron-energy-loss spectrometry to measure the intensities of the Cu white lines found at the onsets of the L2 and L3 absorption edges of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu. Enhancements of the white lines in the alloys as compared to elemental Cu were correlated with changes in the 3d occupancy of Cu atoms upon alloying. We found that the Cu atoms lost 0.2±0.06 d electrons when alloyed with Ti or Zr, 0.0-0.0+0.06 d electrons when alloyed with Au or Pd, and 0.03-0.03+0.06d electrons when alloyed with Pt. We found no strong correlation between measured 3d-occupancy changes and heats of formation of the alloys, consistent with expectations that outer s electrons play an important role in the alloying of Cu with Pt, Pd, and Au.


Item Type:Article
Additional Information:©1994 The American Physical Society. Received 15 June 1994. This work was supported by the United State Department of Energy under Contract No. DE-FG03-86ER45270.
Record Number:CaltechAUTHORS:PEAprb94
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PEAprb94
Alternative URL:http://dx.doi.org/10.1103/PhysRevB.50.12969
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3691
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:28 Jun 2006
Last Modified:26 Dec 2012 08:55

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