Interpretation of the magnetic susceptibility behaviour of soft carbon steels based on the scaling theory of second order phase transitions for systems with supercritical disorder

被引：0

作者：

Skarlatos, A. ^{[1
]}

Martinez-de-Guerenu, A. ^{[2
,3
]}

Badiola, D. J. ^{[2
,3
]}

Lelidis, I ^{[4
]}

机构：

[1] Univ Paris Saclay, List, CEA, F-91120 Palaiseau, France

[2] CEIT Basque Res & Technol Alliance BRTA, Manuel de Lardizabal 15, Donostia San Sebastian 20018, Spain

[3] Univ Navarra, Tecnun, Manuel de Lardizabal 13, Donostia San Sebastian 20018, Spain

[4] Natl & Kapodestrian Univ Athens, Fac Phys, Athens 15784, Greece

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2022年 / 555卷

关键词：

Random field Ising model; Lorentz function; Magnetic susceptibility; Isothermal annealing; Recovery process; MONTE-CARLO; FIELD; HYSTERESIS; AVALANCHES; RECOVERY;

D O I：

10.1016/j.jmmm.2022.169265

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The experimental magnetic susceptibility curves of several soft steel grades, like interstitial free (IF) or low carbon (LC) steels, can be interpreted within the framework of universal scaling functions obtained for systems with quenched disorder, such as the one described by the random field Ising model with supercritical disorder. Mean-field theory (both scalar and site-dependent) is used to explore the behaviour at the proximity of the coercive field, and explicit expressions are derived. As a result, the susceptibility values close to the coercive field can be approximated to a good extend by a Lorentzian function. Theoretical results are compared against a number of experimental curves obtained from interstitial free (IF) and extra low carbon (ELC) steels subjected to isothermal annealing.

引用

页数：8