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Thermodynamics of plagioclase II: Temperature evolution of the spontaneous strain at the(Iar 1 leftrightarrow Par 1)phase transition in anorthite

โœ Scribed by Simon A. T. Redfern; Ekhard Salje

Publisher
Springer-Verlag
Year
1987
Tongue
English
Weight
550 KB
Volume
14
Category
Article
ISSN
0342-1791

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The lattice parameters of anorthites AngsAb 2 and Anloo have been measured from 22 to 1100 K. The spontaneous strain arising from the I1-P 1 displacive transition in An98 follows second order Landau behaviour. The spontaneous strain (es) couples quadratically to the order parameter (QO) with esocQ~