J. Am. Chem. Soc., 128 (4), 1042 -1043, 2006. 10.1021/ja057343n S0002-7863(05)07343-9
Web Release Date: January 5, 2006

Copyright © 2006 American Chemical Society

Enhanced Magnetic Properties of Self-Assembled FePt Nanoparticles with MnO Shell

Shishou Kang,* G. X. Miao, S. Shi, Z. Jia, David E. Nikles, and J. W. Harrell

Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, Alabama 35487-0209

skang@mint.ua.edu

Received October 27, 2005

Abstract:

Self-assembled FePt/MnO nanoparticles with different morphology and size were synthesized with a polyol process. With the MnO coating, FePt nanoparticles exhibit a high blocking temperature and magnetic moment. The low-temperature hysteresis loop of FePt nanoparticles can be shifted through the AFM pinning of the MnO shell. The aggregation of FePt nanoparticles during the L10 phase transformation can be significantly decreased by coating with the MnO shell.

Download the full text: PDF | HTML