Abstract
The FMR spectra of electron-doped Sm 0.2Ca 0.8Mn 1− x Ru x O 3 (0≤ x≤0.08) system are measured and analyzed in the temperature interval 100≤T≤320 K, including all critical points of magnetic transitions. It is shown that the origin of macroscopic magnetization in the parent Sm 0.2Ca 0.8MnO 3 and Ru-doped compounds is essentially different. The bound magnetic polarons formation at temperatures below the Neel point is suggested to be responsible for the appearance of a minute ‘spontaneous’ magnetic moment in Sm 0.2Ca 0.8MnO 3. Doping with Ru induces formation of ‘conventional’ ferromagnetic phase in antiferromagnetic matrix. Such a phase is characterized by a Curie temperature, which is higher than the Neel temperature of the matrix. Magnetic phase diagrams of Sm 0.2Ca 0.8Mn 1− x Ru x O 3 determined by ferromagnetic resonance and dc magnetic measurements are discussed.
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.
