2000/10/11 by A. Schwartz, Andrew Schwartz, Schwartz, Andrew +4
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #FOS: Physical sciences #High-pressure geophysics and materials #Magnetic Properties of Alloys #Magnetic and transport properties of perovskites and related materials #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0010172
7 pages, 6 figures
arxiv created 2000/10/11 · openalex publication_date 2000/10/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Employing a broadband microwave reflection configuration, we have measured the complex surface impedance, ZS(ω,T,H), of single crystal La0.8Sr0.2MnO3, as a function of frequency (0.045-45 GHz), temperature (250-325 K), and magnetic field (0-1.9 kOe). The microwave surface impedance depends not only on the resistivity of the material, but also on the magnetic permeability, μ(ω,T,H), which gives rise to ferromagnetic resonance (FMR) and ferromagnetic anti-resonance (FMAR). The broadband nature of this experiment allows us to follow the FMR to low frequency and to deduce the behavior of both the local internal fields and the local magnetization in the sample.