2008/06/22 by R. J. McQueeney, Jiaqiang Yan, J. -Q. Yan +4 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Chemistry #Condensed matter physics #Crystallography #Dispersion (optics) #Exchange bias #Ferromagnetism #Inelastic neutron scattering #Inelastic scattering #Magnetic and transport properties of perovskites and related materials #Magnetic anisotropy #Magnetic field #Magnetic structure #Magnetism #Magnetization #Materials science #Multiferroics and related materials #Neutron #Neutron scattering #Nuclear physics #Optics #Perovskite (structure) #Physics #Quantum mechanics #Scattering #Small-angle neutron scattering #Spin (aerodynamics) #Spin wave #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.78.184417
published as Physical Review B 78, 184417 (2008) · 8 pages, 7 figures
arxiv created 2008/06/22 · openalex publication_date 2008/11/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for LaMnO3 (A-type antiferromagnet), LaVO3 (C type), and LaFeO3 (G type) and compared to Heisenberg model calculations. The anisotropy of in-plane (Jab) and out-of-plane (Jc) exchange constants can be obtained from the data. The procedure quickly determines the magnetic exchange interactions without the need for single-crystal dispersion measurements and allows for rapid systematic studies of the evolution of magnetism in perovskite systems.