By Topic

Particle interactions and Hc: An experimental approach

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
$33 $13
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

1 Author(s)
H. Huisman ; PD Magnetics B.V., Molenstraat, Oosterhout, The Netherlands

In the phenomenologic relation for the coercivity (Hc) of a powder Hc = A + B(1-P) one generally takes for the volume packing factor P, the "macroscopic" value, which is calculated from the macroscopic dimensions of the sample and the weight. A series of powder with varying pigment volume packing factors were made by densifying the original powder. Applying for these series the Hc vs P relation we have found that for P, the "microscopic" value must be taken. This means that the Hc is primarily controlled by the volume packing factor of the "microscopic" clusters or aggregates. We also found that this "microscopic" P, can easily be measured by means of mercury intrusion porosimetry.

Published in:

IEEE Transactions on Magnetics  (Volume:18 ,  Issue: 6 )