Hysteresis measurements of soft magnetic materials and estimation of residual stresses

Article type: Research Article

Authors: Mehboob, Nasir^{a; b;} | Nasir, Muhammad Farooq^b | Grössinger, Roland^a | Oser, Peter^a | Kriegisch, Martin^a | Fulmek, Paul^c

Affiliations: [a] Institute of Solid State Physics, TU Vienna, Austria | [b] Department of Physics, Riphah International University, Islamabad, Pakistan | [c] Institute of Sensor and Actuator Systems, TU Vienna, Austria

Correspondence: [*] Corresponding author: Nasir Mehboob, Riphah International University, I-14 Islamabad, Pakistan. Tel.: +92 51 8446000 7; Fax: 92 51 5125170; E-mail: nasir.mehboob@riphah.edu.pk

Abstract: Frequency and temperature dependence of the hysteresis loops (both major and minor hysteresis loops) of well-known materials such as pure Fe and pure Ni in the as-cast state and after a heat treatment, were measured and analyzed. Furthermore temperature dependent magnetostriction of the as-cast and annealed Ni sample were measured and residual stresses were estimated by assuming the magnetoelastic energy as the origin of coercivity Hc. The hysteresis measurements were made on fully automized hysteresigraph which is handled by a labview program. The system works with ring- or frame-shaped samples in the frequency range from 0.1 Hz to 2 kHz and in the temperature range from −77 K to 493 K.

Keywords: Magnetic hysteresis, coercivity, residual stresses, magnetostriction

DOI: 10.3233/JAE-170075

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 60, no. 1, pp. 55-62, 2019