Determining the Magnetic Configuration of Crystalline Solids with Terahertz Spectroscopy

Abstract

Magnetic materials are increasingly garnering attention for modern technological applications because of their magnetoelectric properties, which can be modified by external magnetic fields, temperature, and pressure. To utilize magnetic solids in advanced applications, accurate descriptions and details about temperature-dependent spin ordering (antiferromagnetic, ferromagnetic and paramagnetic phases) within the magnetic materials must be understood with atomic-level precision. Low-frequency vibrational dynamics can be used to investigate ground state structure-property relationship of magnetic structures, as demonstrated here for FePO4.