论文信息 - Electron Transfer in Dilute Gold Alloys

Electron Transfer in Dilute Gold Alloys

Isomeric chemical shifts were observed in the Mossbauer spectra of Au197 atoms in dilute solutions in 19 metals and semiconductors at 4.2°K. The shifts were interpreted as arising from transfer of (conduction) electrons in the 6s shell of gold, probably toward the gold atom, in the alloys. A correlation was found between the shifts and the host electronegativities. The relationship between the 6s electron of gold and the nickel d bands in gold—nickel alloys is discussed. It is shown that the ground and first excited nuclear states of Au197 have radial charge moments sufficiently different (the excited state is probably ``larger'') to require collective nuclear excitation. The isomeric shift in Al2Au does not directly confirm the electroneutrality hypothesis for intermetallic compounds.

D. A. Shirley | M. Kaplan | P. H. Barrett | R. Grant | D. Keller

[1] S. S. Hanna,et al. Mössbauer Effect in Metallic Iron , 1962 .

[2] D. A. Shirley,et al. MOSSBAUER EFFECT IN Eu$sup 151$ POSSIBLE INFLUENCE OF OPTICAL BRANCHES , 1962 .

[3] A. Braunstein,et al. New evidence for core excitation in Au197 , 1962 .

[4] D. A. Shirley. INTERPRETATION OF THE ISOMERIC CHEMICAL SHIFTS IN Au$sup 19$$sup 7$ , 1961 .

[5] D. A. Shirley,et al. RECOIL-FREE RESONANT ABSORPTION IN Au$sup 19$$sup 7$ , 1961 .

[6] G. Lang,et al. Electric Quadrupole Splitting and the Nuclear Volume Effect in the Ions of Fe 57 , 1961 .

[7] J. Lardinois. Nuclear shape effect on isomeric shift , 1960 .

[8] J. Eisinger,et al. Effects of the Distribution of Nuclear Magnetization on Hyperfine Structure , 1958 .

[9] K. Ford,et al. ISOTOPE SHIFT ANOMALIES AND NUCLEAR STRUCTURE , 1953 .

[10] L. Pauling. Electron Transfer in Intermetallic Compounds. , 1950, Proceedings of the National Academy of Sciences of the United States of America.

[11] R. M. Elliott,et al. Hyperfine Structure of Gold , 1939 .