Measurements of 3[ital d] occupancy from Cu [ital L][sub 2,3] electron-energy-loss spectra of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu

Journal Article · Tue Nov 01 00:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.12969· OSTI ID:6841975

Pearson, D H; Ahn, C C; Fultz, B ^[1]

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1. California Institute of Technology, Division of Engineering of Applied Science, Mail Code 138-78, Pasadena, California 91125 (United States)

We used electron-energy-loss spectrometry to measure the intensities of the Cu white lines found at the onsets of the [ital L][sub 2] and [ital L][sub 3] 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 3[ital d] occupancy of Cu atoms upon alloying. We found that the Cu atoms lost 0.2[plus minus]0.06 [ital d] electrons when alloyed with Ti or Zr, 0.0[sub [minus]0.0][sup +0.06] [ital d] electrons when alloyed with Au or Pd, and 0.03[sub [minus]0.03][sup +0.06][ital d] electrons when alloyed with Pt. We found no strong correlation between measured 3[ital d]- occupancy changes and heats of formation of the alloys, consistent with expectations that outer [ital s] electrons play an important role in the alloying of Cu with Pt, Pd, and Au.

• DOE Contract Number: FG03-86ER45270
• OSTI ID: 6841975
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 50:17; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
ENERGY-LOSS SPECTROSCOPY
GOLD ALLOYS
PALLADIUM ALLOYS
PLATINUM ALLOYS
TITANIUM ALLOYS
ZIRCONIUM ALLOYS
BINARY ALLOY SYSTEMS
ELECTRON SPECTROSCOPY
ENERGY-LEVEL DENSITY
QUENCHING
ALLOY SYSTEMS
ALLOYS
PLATINUM METAL ALLOYS
SPECTROSCOPY
360104* - Metals & Alloys- Physical Properties