Direct transition from the rhombohedral ferroelectric to the paraelectric phase in a (Ba,Sr)TiO3 thin film on a (111)MgO substrate
A. S. Anokhin, Yu. I. Yuzyuk, N. V. Lyanguzov, A. G. Razumnaya, D. V. Stryukov, O. A. Bunina, Yu. I. Golovko, V. B. Shirokov, V. M. Mukhortov and M. El Marssi