2008/11/06 by Diyar Talbayev, D. Talbayev, A. D. LaForge +7 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Exchange interaction #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Ferromagnetism #Hexagonal crystal system #Ion #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics #Multiferroics and related materials #Physics #Rare earth #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.101.247601
accepted for publication in Physical Review Letters
arxiv created 2008/11/06 · openalex publication_date 2008/12/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. The low-temperature magnetic excitation spectrum of HoMnO3 consists of magnetic-dipole transitions of Ho ions within the crystal-field split J = 8 manifold and of the triangular antiferromagnetic resonance of Mn ions. We determine the effective spin Hamiltonian for the Ho ion ground state. The magnetic-field splitting of the Mn antiferromagnetic resonance allows us to measure the magnetic exchange coupling between the rare-earth and Mn ions.