Self‐diffusion in silver at low temperatures | Zendy

Lam Nghi Q. | Zendy; Rothman S. J. | Zendy; Mehrer H. | Zendy; Nowicki L. J. | Zendy

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Self‐diffusion in silver at low temperatures

Author(s) -

Lam Nghi Q.,

Rothman S. J.,

Mehrer H.,

Nowicki L. J.

Publication year - 1973

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2220570122

Subject(s) - activation energy , arrhenius plot , arrhenius equation , diffusion , dissociation (chemistry) , self diffusion , atmospheric temperature range , materials science , thermodynamics , chemistry , analytical chemistry (journal) , physics , self service , chromatography , marketing , business

Self‐diffusion in silver single crystals was measured at temperatures between 270 and 500 °C. The diffusion coefficients were in the range of 3×10 −18 to 2×10 −13 cm 2 /s. The results indicate that the Arrhenius plot is curved owing to a large divacancy contribution and that the activation energy for diffusion by divacancies is temperature dependent due to a partial dissociation of the divacancies. The best values of the parameters for diffusion by monovacancies are D o = 0.041 cm 2 /s, Q = 1.76 eV.

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