Synthesis and magnetic characterizations of manganite-based composite nanoparticles for biomedical applications

Authors

Aswini K. Pradhan, Center for Materials Research, Norfolk State UniversityFollow
R. Bah, Norfolk State University, Norfolk, Virginia
R. B. Konda, Norfolk State University, Norfolk, Virginia
R. Mundle, Norfolk State University, Norfolk, Virginia
H. Mustafa, Norfolk State University, Norfolk, Virginia
O. Bamiduro, Norfolk State University, Norfolk, Virginia
Rakhim R. Rakhimov, Center for Materials Research, Norfolk State UniversityFollow
Xiaohui Wei, University of Nebraska - Lincoln
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

1-24-2008

Comments

Published by Am Inst of Physics. J. Appl. Phys. 103, 07F704 2008. Copyright 2008. Permission to use. http://www.aip.org/.

Abstract

We report chemically synthesized highly crystalline lanthanum strontium manganite (LaSrMnO₃) and Eu-doped Y₂O₃ and their composites. The synthesis yields nanoparticles of size 30–40 nm. Magnetic measurements performed on nanoparticles and composites show magnetic transition at about 370 K with a superparamagnetic behavior at room temperature. The ferromagnetic resonance studies of the nanoparticles show large linewidth due to surface strains. The composite nanoparticles also display luminescent behavior when irradiated with ultraviolet light. The manganites as well their composite with the luminescent nanoparticles may be very useful for biomedical applications.