We present a generic mechanism that explains why many Kondo materials show magnetic ordering along directions are not favored by the crystal-field anisotropy. Using renormalization-group (RG) analysis of single-impurity models with single-ion anisotropy, we demonstrate strong fluctuations above temperature drive moment reorientation over wide range parameters, e.g., for different spin values $S...

Hard magnetic materials belong to a novel class of soft active with the capability quick, large, and complex deformation via applying an external actuation. They have extensive range potential applications in robots, biomedical devices, stretchable electronics, etc. Recently, investigation on experimental theoretical nonlinear mechanics hard cantilevers has received notable considerations. In a...

This work aims at developing a viscoelastic formulation for the time-dependent finite deformation analysis of beams made hard-magnetic soft materials (HMSMs) under magnetic loading. After introducing basic kinematic quantities, viscoelasticity HMSMs is developed, which general in sense that it can be used 2D and 3D geometries beside beam, plate, shell-type structures. Next, expression consisten...