2010 Volume 45 Issue 3 Pages 156-160
Magnetization dynamics driven by spin current in nano-scaled ferromagnetic materials has attracted much attention in academic and industrial viewpoints because of a wide variety of promising applications in magnetic recording and spintronic devices with higher integration density and lower energy consumption. In the manuscript, basic concepts of spin current and its interaction with magnetization are introduced. TEM in-situ analysis method using Lorentz microscopy and electron holography together with transport measurement has great advantages in microscopically clarifying spintronic properties. Making full use of these advantages, manipulation of magnetic domain states using spin current under small magnetic fields is demonstrated. Its application in spintronic devices and future prospect of spintronic investigation using TEM in-situ analysis method are discussed.