By Topic

Alternating current (ac) susceptibility studies in Ni‐SiO2 granular film

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Zhao, B. ; Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong ; Chow, Jeff Y. ; Yan, X.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.362140 

Alternating current (ac) magnetic susceptibility was measured as a function of frequencies (1 Hz–1 kHz) and temperatures (5–300 K) in nominal Ni‐SiO2 granular films for zero field cooled samples. When temperature is well below and well above the blocking temperature Tb, the real part of the susceptibility, χ′, remains independent of frequency, while the imaginary part of the susceptibility, χ″, is essentially zero within the experimental error. Near Tb, however, both χ′ and χ″ were found to be greatly enhanced, and χ′ decreases with increasing frequency following log(f ) dependence. A scaling method was applied for χ′(f,T) to determine the distribution of energy barriers and that of particle size. © 1996 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:79 ,  Issue: 8 )