Modeling High-Order Ferromagnetic Hysteretic Minor Loops and Spirals Using a Generalized Positive-Feedback Theory

• Published in: IEEE transactions on magnetics Vol. 48; no. 3; pp. 1115 - 1129
• Main Author: Harrison, Robert G.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anhysteresis; Asymmetry; Cross-disciplinary physics: materials science; rheology; Demagnetization; demagnetizing spiral; energy summation; Exact sciences and technology; Ferromagnetic materials; Ferromagnetism; high-order loop; high-order return curve; Hysteresis; Magnetic domains; Magnetic hysteresis; Magnetism; Magnetization; Materials; Materials science; minor loop; Other topics in materials science; Physics; recoil loop; return-point memory; Spirals; energy summation; Anhysteresis; high-order return curve; Magnetization; minor loop; demagnetizing spiral; recoil loop; return-point memory; Modelling; high-order loop; Magnetic properties; hysteresis
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2011.2170846

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.