Phenomenological theory of thermally stimulated relaxation

V. Halpern

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


A number of methods exist for deriving the activation energy EA of properties of a system from the results of thermally stimulated relaxation processes, such as thermally stimulated currents and thermoluminescence. The standard analysis of such processes assumes that the isothermal relaxation of the system decays exponentially with time. An extension of this analysis, based on the use of the system's natural time, is presented for systems possessing an arbitrary time dependence of the isothermal relaxation, provided that this relaxation at different temperatures can be described by a suitably scaled master function. In particular, it is shown that for systems in which the isothermal relaxation decays with the time t as exp[-(t/τ)α], the parameter determined by most of the methods is not the activation energy EA of the scaling time but rather the product αEA.

Original languageEnglish
Pages (from-to)307-311
Number of pages5
JournalJournal Physics D: Applied Physics
Issue number2
StatePublished - 1993


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