Self-Assembly and Magnetic Properties of MnO Coated FePt Nanoparticles

Author

Kang, S. ; Miao, G. ; Shi, S. ; Jia, Z. ; Nikles, D.E. ; Harrell, J.W.

Author_Institution

Univ. of Alabama, Tuscaloosa

fYear

2006

fDate

8-12 May 2006

Firstpage

21

Lastpage

21

Abstract

This paper reports on the synthesis and self-assembly of FePt/MnO core/shell nanoparticles. The enhanced magnetic properties of FePt nanoparticles with MnO coating is shown. Results also demonstrated the suppression of aggregation of MnO coated FePt nanoparticles during the annealing process. The magnetic moment of the FePt nanoparticles is significantly enhanced with the MnO shell. Also, the room temperature hysteresis loops curves reveal that the annealed FePt nanoparticles without the MnO shell have a large coercivity around 14 kOe, while FePt nanoparticles with the MnO shell show a sheared loop with a small coercivity about 3 kOe.

Keywords

aggregation; annealing; coercive force; iron alloys; magnetic hysteresis; magnetic moments; magnetic particles; manganese compounds; nanoparticles; platinum alloys; self-assembly; MnO-FePt; aggregation; annealing; coercivity; hysteresis loops curves; magnetic moment; magnetic properties; nanoparticles; room temperature; self-assembly; temperature 293 K to 298 K; Annealing; Coatings; Coercive force; Magnetic cores; Magnetic hysteresis; Magnetic moments; Magnetic properties; Nanoparticles; Self-assembly; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.375430

Filename

4261455