Virginia TechBai, FeimingWang, JunlingWuttig, ManfredLi, JiefangWang, NaigangPyatakov, Alexander P.Zvezdin, Anatoly KonstantinovichCross, L. E.Viehland, Dwight D.2014-02-032014-02-032005-01-01Bai, FM; Wang, JL; Wuttig, M; et al., "Destruction of spin cycloid in (111)(c)-oriented BiFeO3 thin films by epitiaxial constraint: Enhanced polarization and release of latent magnetization," Appl. Phys. Lett. 86, 032511 (2005); http://dx.doi.org/10.1063/1.18516120003-6951http://hdl.handle.net/10919/25247In BiFeO3 films, it has been found that epitaxial constraint results in the destruction of a space modulated spin structure. For (111)c films, relative to corresponding bulk crystals, it is shown (i) that the induced magnetization is enhanced at low applied fields; (ii) that the polarization is dramatically enhanced; whereas, (iii) the lattice structure for (111)(c) films and crystals is nearly identical. Our results evidence that eptiaxial constraint induces a transition between cycloidal and homogeneous anti ferromagnetic spin states, releasing a latent antiferromagnetic component locked within the cycloid. (C) 2005 American Institute of Physics.application/pdfen-USIn CopyrightPhase transitionsBismuth ferriteCrystalsAntiferromagnetsDensityPhysicsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/86/3/10.1063/1.1851612https://doi.org/10.1063/1.1851612