Template-mediated assembly of FePt L1₀ clusters under external magnetic field

Authors

Yucheng Sui, University of Nebraska-LincolnFollow
W. Liu, University of Nebraska - Lincoln
Lanping Yue, University of Nebraska-LincolnFollow
Xingzhong Li, University of Nebraska-LincolnFollow
J. Zhou, University of Nebraska - Lincoln
Ralph Skomski, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

5-15-2005

Comments

Published by American Institute of Physics. J. Applied Physics 97, 10J304 (2005). ©2005 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

FePt L1₀-structured clusters were synthesized by hydrogen reduction of Fe(NO₃)₃•9H₂O and H₂PtCl₆•6H₂O mixtures within the pores of alumina. They were released by dissolving the alumina matrix and capped with organic surfactants. After a series of chemical treatments, clusters with an average diameter of about 11 nm were precipitated. The clusters were drop casted onto ordered nanoporous arrays. Clusters reaching the bottom of the pores formed an ordered magnetic array. The corresponding magnetic film exhibits distinct anisotropic behavior caused by the external magnetic field.