Gurney, William and Gugan, D. (1971) The annealing of deformed potassium : I. an experimental study. Philosophical Magazine, 24 (190). pp. 857-878. ISSN 1478-6435Full text not available in this repository. (Request a copy from the Strathclyde author)
Measurements of residual resistance have been used to study the recovery of high-purity potassium wires deformed at 4·2 K and below. Details of the full recovery spectrum are given in this paper. The recovery is completed by a wide stage (at about 150 K) which arises from the final annealing of dislocations, but the main feature of recovery is a large stage (accounting for about 40% of the recovery) centred at 15 K. Point defects anneal in this stage by a process which involves several mechanisms, discussed in the following paper. The parameter of chief interest in the recovery process is the migration energy of the monovacancy, E 1v M. The value for this, which proves to be almost independent of the model, is 0·034±0·006 eV, as compared with 0·071 eV, a value recently calculated by Torrens and Gerl. Evidence is given of an anomalous difference between the properties of vacancies in potassium and in sodium.
|Keywords:||residual resistance measurement, deformed potassium, Probabilities. Mathematical statistics|
|Subjects:||Science > Mathematics > Probabilities. Mathematical statistics|
|Department:||Faculty of Science > Mathematics and Statistics|
|Depositing user:||Pure Administrator|
|Date Deposited:||15 Oct 2012 10:00|
|Last modified:||22 Mar 2017 12:21|