August 24, 2012

The Poisson Ratio in CoFe2O4 Spinel Thin Films

Michael Foerster, Milko Iliev, Nico Dix, Xavier Martí, Mykhailo Barchuk, Florencio Sánchez and Josep Fontcuberta
Adv. Funct. Mater.
Article first published online: 13 JUN 2012 | DOI: 10.1002/adfm.201200257

Epitaxial stress on thin films makes things a bit complicate. Unit cells are deformed in a non-volume conserving manner, changing interatomic bonds and ion dynamics.
Watch for the total volume variations to understand properties !

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