  The micromagnetic singularity, the so-called Bloch point, can form a
metastable state in the nanosphere. We classify possible types of Bloch points
and derive analytically the shape of magnetization distribution inside
different Bloch point. We show that external gradient field can stabilize the
Bloch point: the shape of the Bloch point becomes radial-dependent one and
compute the magnetization structure of the nanosphere, which is in a good
agrement with performed spin-lattice simulations.
