Electronic and electrical properties, Hexagonal, Mn-O-Yb, Mn-x polyhedra

• Fe-Mn-O-Yb
• Mn-O-Tb-Yb
• permittivity (dielectric constant)
• electric polarization
• values of electric polarization
• ferroelectric transitions
• oxide
• chalcogen
• disordered
• lanthanoid
• rare earth