Strain-induced ferroelectricity in KTaO3 thin films C. Filipič, V. Bobnar, Z. Kutnjak, S. Glinšek, B. Kužnik, B. Malič, M. Kosec and A. Levstik EPL, 96 3 (2011) 37003 Published online: 04 October 2011 DOI: 10.1209/0295-5075/96/37003