%0 Journal Article %T Effects of Surface Anisotropy on Magnetic Vortex Core %A Oleksandr V. Pylypovskyi %A Denis D. Sheka %A Volodymyr P. Kravchuk %A Yuri Gaididei %J Physics %D 2013 %I arXiv %R 10.1016/j.jmmm.2014.02.094 %X The vortex core shape in the three dimensional Heisenberg magnet is essentially influenced by a surface anisotropy. We predict that depending of the surface anisotropy type there appears barrel- or pillow-shaped deformation of the vortex core along the magnet thickness. Our theoretical study is well confirmed by spin-lattice simulations. %U http://arxiv.org/abs/1311.6882v1