Abstract
Magnetoresistance ratio (MR), Δρ/ρ0, in SrRu0.5Mn0.5O3 is enhanced by 20% near the Curie temperature (Tc=125 K) compared to the parent compound SrRuO3 (Tc=165 K) which is a super exchange mediated ferromagnetic metal. The enhancement in MR ratio in the equiatomic B site composition is due to the onset of double-exchange mediated ferromagnetic interaction. The Mn, Ru L2,3 edge of the x-ray absorption spectra of the SrRu0.5Mn0.5O3 phase shows the coexistence of ionic pairs involving Mn+3/Ru+5↔Mn+4/Ru+4. Mn+3 (t2g3eg1) recognizes both Mn+4/Ru+5 (t2g3eg0) as magnetically equivalent sites for eg electron hopping and for maintaining the eg hole carrier concentration.
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.
