Open Access Nano Express

Fabrication and magnetic properties of granular Co/porous InP nanocomposite materials

Tao Zhou1, Dandan Cheng1, Maojun Zheng1*, Li Ma2 and Wenzhong Shen1

Author Affiliations

1 Laboratory of Condensed Matter Spectroscopy and Opto-Electronic Physics, and Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China

2 School of Chemistry & Chemical Technology, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China

For all author emails, please log on.

Nanoscale Research Letters 2011, 6:276  doi:10.1186/1556-276X-6-276

Published: 31 March 2011

Abstract

A novel Co/InP magnetic semiconductor nanocomposite was fabricated by electrodeposition magnetic Co nanoparticles into n-type porous InP templates in ethanol solution of cobalt chloride. The content or particle size of Co particles embedded in porous InP increased with increasing deposition time. Co particles had uniform distribution over pore sidewall surface of InP template, which was different from that of ceramic template and may open up new branch of fabrication of nanocomposites. The magnetism of such Co/InP nanocomposites can be gradually tuned from diamagnetism to ferromagnetism by increasing the deposition time of Co. Magnetic anisotropy of this Co/InP nanocomposite with magnetization easy axis along the axis of InP square channel was well realized by the competition between shape anisotropy and magnetocrystalline anisotropy. Such Co/InP nanocomposites with adjustable magnetism may have potential applications in future in the field of spin electronics.

PACS: 61.46. +w · 72.80.Tm · 81.05.Rm · 75.75. +a · 82.45.Aa