Abstract
The effects of partially replacing Mn with Fe ions in the La 0.85Ca 0.15MnO 3 system are reported. On replacing 5% of the Mn with Fe ions the system exhibits a transition to a re-entrant spin glass like phase with a ferromagnetic transition at 170 K and spin freezing transition at T∼100 K. The system remains insulating throughout both the ferromagnetic and glassy phases with however a sharp resistivity increase at low temperature ( T∼150 K). The spin freezing temperature shifts upwards with increasing frequency and magnetic relaxation effects are observed. However conventional spin glass features such as a memory effect are not observed and the spin freezing temperature is relatively insensitive to applied magnetic fields.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.