Fig. 3: Simulation models and magnetostriction distribution in the saturated states.
From: Role of magnetostriction on power losses in nanocrystalline soft magnets
a Two-dimensional simulation model of a uniformly magnetized NSMM. The Cartesian coordinates of the absolute frame are also shown. The size is 2048 × 2048 × 2 nm3, and the magnetization unit vector is m = (1, 0, 0). The simulation model consists of 32,947 nanocrystallites whose mean diameter, D, is 12.7 nm in the x1x2 plane, as shown in the inset. b Three-dimensional simulation model with a size of 256 × 256 × 256 nm.3 The Cartesian coordinates of the absolute frame are also shown. The simulation model contains 17,671 nanocrystallites whose mean diameter, D, is 12.1 nm, as shown in the inset. The magnetization unit vector is uniformly (1,0,0) throughout the model, the same as the two-dimensional model. c Schematic explanation of the displacement vector u. We discretize the simulation model consisting of nanocrystallites into cubic cells with a side length of 2 nm, where each cell has its own displacement vector. After deformation due to magnetostriction, the cell center moves by u. d Color map displaying the distribution of the strain ξ11 in the two-dimensional model. e Three-dimensional plot corresponding to the partial region of (d), which is enclosed by the white dotted square.
