Magnetic properties of nickel hydroxide nanoparticles

Authors

X. H. Liu, Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
W. Liu, Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
X. K. Lv, Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
F. Yang, Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
X. Wei, University of Nebraska-Lincoln
Z. D. Zhang, Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

2010

Comments

Published in J. Appl. Phys. 107, 083919 (2010). Copyright © 2010 American Institute of Physics. Used by permission.

Abstract

The magnetic properties of 10 nm size Ni(OH)₂ nanoparticles prepared by sol-gel method have been studied. The magnetic moments increase with decreasing temperature in a low applied field, which is due to the spin-frozen-like state at low temperatures, and the metamagnetic transition is not clearly observed even in an applied field of 70 kOe due to the size effect. Furthermore, the transition from paramagnetic to antiferromagnetic in the Ni(OH)₂ nanoparticles occurs at lower temperature (22 K).