Studies of superspin glass state and AC-losses in La0.7Sr0.3MnO3 nanoparticles obtained by high-energy ball-milling

• Published in: Journal of magnetism and magnetic materials Vol. 368; pp. 240 - 245
• Main Authors: Phong, P.T., Manh, D.H., Nguyen, L.H., Tung, D.K., Phuc, N.X., Lee, I.-J.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-11-2014; Elsevier
• Subjects: AC-losses; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; La0.7Sr0.3MnO3; Magnetic properties and materials; Magnetic properties of nanostructures; Magnetotransport phenomena, materials for magnetotransport; Manganites; Nanoparticle; Physics; Superspin glass; La0.7Sr0.3MnO3; Superspin glass; AC-losses; Nanoparticle; Dipole dipole interaction; Ball mill; Magnetic field effects; Perovskites; Magnetic nanomaterial; Magnetic measurement; Magnetic susceptibility; MnO; Nanoparticles; Magnetic particles; Particle interactions; La; Non linear effect; Microstructure; AC losses; Manganites; Sr
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2014.05.025

Single-phase perovskite compound La0.7Sr0.3MnO3 was synthesized by a high-energy ball milling method. Nanoparticle nature of this manganite with the average particle diameter of 11nm was revealed from structure and morphology characterizations. The results of ac magnetic susceptibility measurements show that the system can be described as an ensemble of interacting magnetic nanoparticles, which indicates that the dipole–dipole interactions are strong enough to create superspin glass state in the sample. Furthermore, the specific loss power which is exhausted on the irradiation of an ensemble of particles with a magnetic field has been calculated and measured experimentally.
•LSMO nanopowder was prepared by the high-energy ball-milling method.•The superspin glass state of LSMO nanopowder was studied.•The SLP has been calculated and measured experimentally.