By Topic

The relationship between the dynamic remanent coercivity and the viscosity and irreversible susceptibility in magnetic media

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 $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

4 Author(s)
Stinnett, S.M. ; Dept. of Phys. & Astron., Alabama Univ., Tuscaloosa, AL, USA ; Harrell, J.W. ; Khapikov, A.F. ; Doyle, W.D.

It has been established previously that thermal switching in high density magnetic media causes a significant time dependence of the coercivity at least for times >10-8 s. Here, the classical Arrhenius-Neel model assuming coherent rotation is applied to systems with distributions in volume, anisotropy and orientation and the numerical results for the time dependent remanent coercivity HCR(t), the viscosity SR, and the irreversible susceptibility, χIRR compared to new experimental data on CrO2 particulate tapes with varying orientation. The results for an anisotropy distribution are significantly different from a volume distribution and are in better agreement with the data. All distributions produce Sharrock type behavior for HCR(t), regardless of the distribution width. The model predicts that increasing the orientation distribution width will have very little effect on the fractional time dependence of HCR, in agreement with experiment which showed that SRχIRR/ and HCR(t) were essentially independent of orientation. Finally, the direct connection between SRχIRR/ and HCR(t) is confirmed theoretically and experimentally.

Published in:

Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 1 )