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Infinitesimal loops and tweed structure

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Abstract

Some results are collected for phase transitions in which the elastic strain plays a decisive role. Both ferroelastic and antiferroelastic behaviour results in patterning which has a tweed-like appearance. The ‘infinitesimal loop approximation’ first used by Kroupa in 1962 is used to try to sort out the possible effects. Transformations resulting in pure shear produce ferroelastic tweed, whereas transformations based on the nucleation and growth of platelike precipitates seem likely to produce antiferroelastic tweed.

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Dedicated to Dr. František Kroupa in honour of his 70th birthday.

It is of course a pleasure to recall the interaction with Franta Kroupa, who taught me about infinitesimal loops 35 years ago, and to express gratitude for the hospitality of Prof. David R. Clarke at the Department of Materials, University of California at Santa Barbara, where this paper was written.

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Brown, L.M. Infinitesimal loops and tweed structure. Czech J Phys 45, 893–906 (1995). https://doi.org/10.1007/BF01692007

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  • DOI: https://doi.org/10.1007/BF01692007

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