Avalanches during recrystallization in radiation-damaged pyrochlore and allanite: Statistical similarity to phase transitions in functional materials

Tobias Beirau, Anna Shelyug, Alexandra Navrotsky, Herbert Pöllmann, Ekhard K.H. Salje

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Differential scanning calorimetry has been employed to analyze the jerky behavior of exothermic, structural reorganization processes of the highly disordered radiation-damaged uranium or thorium containing minerals pyrochlore and allanite. The thermal signals occur as thermal spikes forming crackling noise spectra. The energy of the thermal spikes follows power-law behavior with an exponent ϵ ∼1.61-1.65, which is in good agreement with force integrated energy distributions predicted by mean field theory. The recrystallization is hence statistically identical to the collapse of martensites under external pressure and the switching of ferroelectric materials.

Original languageEnglish (US)
Article number231904
JournalApplied Physics Letters
Volume115
Issue number23
DOIs
StatePublished - Dec 2 2019

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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