Eur. Phys. J. B 70, 343-346 (2009)
https://doi.org/10.1140/epjb/e2009-00233-1

Magnetic couplings vs. stress and strain in epitaxial (La, Sr)MnO₃

CNR-INFM SLACS, and Dipartimento di Fisica, Università di Cagliari, 09042 Monserrato (CA), Italy

Corresponding author: ^a vincenzo.fiorentini@dsf.unica.it

Received: 19 April 2009
Revised: 28 May 2009
Published online: 8 July 2009

Abstract

Based on ab initio calculations, we quantify the magnetic couplings and the stress tensor in ferromagnetic Sr-doped LaMnO₃ upon combined application of built-in epitaxial and external uniaxial strains. We suggest YAlO₃ as a substrate suited to change magnetic order in manganite film with practicable external strains. The effect could lead to strain-activated switches based on piezoelectric-piezomagnetic heterojunctions.