Abstract
Single-phase nanoparticles of La 0.8Sr 0.2MnO 3 have been synthesized via the freeze-drying synthesis technique and subsequent high-energy ball-milling. Transmission electron microscopy images showed aggregates of 300–500 nm in size which consisted of spherical particles characterized by average diameter 30–50 nm. Magnetic and magnetic resonance experiments on the nanoparticles allow us to determine their Curie temperature T C = 323 ± 3 K, which was markedly higher than value 302 ± 2 K of corresponding bulk single-crystalline sample. Short-range ferromagnetic correlations can be responsible for increasing of T C in the manganite nanoparticles. We also found a significant enhancement of magnetic spin relaxation in the nanoparticles in comparison with the bulk samples. The observed effect can be explained by a strengthening of the spin–lattice relaxation for Mn 3+ ions in the La 0.8Sr 0.2MnO 3 nanoparticles due to the increase of non-cubic components of the crystal field.
Sign-in/Register to access full text options 
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.
