Abstract
Transverse-field muon-spin-relaxation (μSR) experiments on the anisotropic spin glass Fe2−xTe1+xO5 were performed near and below the spin-glass temperature (x=0.25; Tg=43.5 K). Earlier1 single-crystal work has indicated that spin-cluster effects are present in zero field slightly above the glass temperature. The effect of a transverse-field (B⊥) upon the spin-glass transition and state has been studied by measuring the temperature dependencies of the muon hyperfine parameters at B⊥=5 kOe, and the field dependencies at 7, 17, and 49 K. The B⊥ direction has been chosen to be perpendicular to the c axis. Spin-cluster effects, as signaled by anomalous muon-spin relaxation, have been observed above 44 K in 5 kOe transverse field; further, exponential muon-spin relaxation above 60 K is observed as expected for a paramagnet. A substantial difference in the field dependence of the relaxation rate is seen between 49 K data and data taken at temperatures (7 and 17 K) well below Tg. A shift in Tg due to an applied magnetic field (⊥ c axis) has not been observed. These single-crystal μSR results will be compared with earlier μSR work on metallic spin glasses, where in polycrystalline samples no spin-cluster effects have been observed.2
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
