St. Petersburg Polytechnic University Journal: Physics and Mathematics Научно-технические ведомости СПбГПУ. Физико-математические науки 2304-9782, 2618-8686, 2405-7223 7 Tightening of the soft mode in epitaxial thin films of relaxor ferroelectric materials Ужесточение мягкой моды в эпитаксиальных тонких пленках сегнетоэлектриков релаксоров 0000-0002-2793-5717 Filimonov Alexey filimonov@rphf.spbstu.ru 0000-0003-0474-3242 Burkovski Roman roman.burkovsky@gmail.com 0000-0003-0225-0487 Bronwald Iurii yuramel@gmail.com Shaganov Anton shaganovanton@gmail.com 57197390995 AAD-9657-2019 Fotiadi Alexander fotiadi@rphf.spbstu.ru Peter the Great St. Petersburg Polytechnic University Ioffe Institute of RAS 10 06 2012 2 146 41 49

The paper presents the results of inelastic scattering of synchrotron radiation in epitaxial thin films of magnesium niobate. It is shown on the basis of obtained results that polar nano-regions in relaxor films is governed by mechanisms other than soft mode condensation.

 ferroelectric relaxors thin films magnesium niobate inelastic scattering synchrotronradiation polar nanoregions