Strain-induced ferroelectricity in KTaO₃ thin films

Jožef Stefan Institute - Jamova 39, 1000 Ljubljana, Slovenia, EU

^a cene.filipic@ijs.si

Received: 15 September 2011
Accepted: 18 September 2011

Abstract

This paper has been formally withdrawn on ethical grounds because six of the co-authors listed (V. Bobnar, Z. Kutnjak, S. Glinšek, B. Kužnik, B. Malič, M. Kosec) had no knowledge or discussion of the content of the article, nor had given permission for it to be submitted, nor had given approval for inclusion of their names as co-authors.

EPL submission policy states quite clearly that: “If several persons are listed as authors, the corresponding author takes full responsibility that the co-authors agree with the submission and further processing of the manuscript.” It is unfortunate that this misconduct was not detected before going to press. My thanks to the scientists named above for bringing this fact to my attention.

Strain-induced ferroelectricity was observed directly at low temperatures in KTaO₃ thin films and the temperature-strain phase diagram was determined. The values of ε_max and T_max of the ε′(T) curves change with the measuring electrical signal. The temperature dependence of the dielectric constant is fitted by the Curie-Weiss law.