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Updated: Jul 13, 2026

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
Published on: June 24, 2016
Real-space observation of helical spin order
Masaya Uchida1, Yoshinori Onose, Yoshio Matsui
1Spin SuperStructure Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), Tsukuba 305-8562, Japan. uchida.masaya@aist.go.jp
Abstract:
Helical spin order in magnetic materials has been investigated only in reciprocal space. We visualized the helical spin order and dynamics in a metal silicide in real space by means of Lorentz electron microscopy. The real space of the helical spin order proves to be much richer than that expected from the averaged structure; it exhibits a variety of magnetic defects similar to atomic dislocations in the crystal lattice. The application of magnetic fields allows us to directly observe the deformation processes of the helical spin order accompanied by nucleation, movement, and annihilation of the magnetic defects.
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