Title :
Modeling High-Order Ferromagnetic Hysteretic Minor Loops and Spirals Using a Generalized Positive-Feedback Theory
Author :
Harrison, Robert G.
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, ON, Canada
fDate :
3/1/2012 12:00:00 AM
Abstract :
A generalization of the previously-described positive-feedback theory of first- and second-order reversal curves permits modeling of minor loops of arbitrarily high order n. The validity of the theory is tested by using it to model various types of high-order phenomena (n ≥3), including symmetrical and asymmetrical spirals as well as closed minor loops, in a variety of different hard and soft ferromagnetic materials that exhibit the return-point memory property.
Keywords :
demagnetisation; feedback; ferromagnetism; magnetic hysteresis; magnetisation reversal; soft magnetic materials; asymmetrical spirals; first-order reversal curves; generalized positive-feedback theory; hard ferromagnetic materials; high-order ferromagnetic hysteretic minor loops; high-order ferromagnetic hysteretic minor spirals; high-order phenomena; return-point memory property; second-order reversal curves; soft ferromagnetic materials; symmetrical spirals; Demagnetization; Hysteresis; Magnetic domains; Magnetic hysteresis; Magnetization; Materials; Spirals; Anhysteresis; demagnetizing spiral; energy summation; high-order loop; high-order return curve; hysteresis; magnetization; minor loop; recoil loop; return-point memory;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2170846
