Phenomenology of ferromagnetism. I. Effects of magnetostatics on susceptibility

Author

Arrott, Anthony S. ; Heinrich, Bretislav ; Templeton, Terry L.

Author_Institution

Dept. of Phys., Simon Fraser Univ., Burnaby, BC, Canada

Volume

25

Issue

6

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

4364

Lastpage

4373

Abstract

Magnetic measurements, with particular emphasis on finite cylinders of iron in the form of whiskers, are interpreted with regard to magnetostatic effects. Demagnetizing fields are calculated using various degrees of approximation. In the cases considered the magnetostatic effects are dominant over other contributions to the micromagnetic energies. A particular approximation in which the demagnetizing field is assumed to be proportional to the second derivative of the magnetization is used to describe the sharp changes in response with field that occur near the Curie temperature

Keywords

ferromagnetic properties of substances; ferromagnetism; iron; magnetic domains; magnetic susceptibility; magnetisation; whiskers (crystal); Curie temperature; Fe; demagnetizing field; ferromagnetism phenomenology; finite cylinders; magnetization; magnetostatic effects; micromagnetic energies; second derivative; susceptibility; whiskers; Demagnetization; Eddy currents; Equations; Iron; Magnetic fields; Magnetic susceptibility; Magnetization; Magnetostatics; Superconducting magnets; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.45316

Filename

45316