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FREQUENCY, DC-FIELD AND TEMPERATURE DEPENDENCE OF THE AC-SUSCEPTIBILITY OF Nd60Fe30Al10 ALLOY

R. Sato Turtelli1,* , J. P. Sinnecker2, D. Triyono3, R. Grössinger1

Affiliation

  1. Inst. f. Festkörperphysik, TU Wien, Wiedner Hauptstr. 8-10, Vienna, Austria
  2. Instituto de Física, UFRJ, CP 68528, 21945-970 Rio de Janeiro, Brasil
  3. Department Fisika – FMIPA, Universitas Indonesia, Depok – 16424, Indonesia

Abstract

The temperature dependence of the initial AC-susceptibility of melt-spun Nd60Fe30Al10 ribbons shows an anomaly, which depends strongly on the heat treatment and the superposing DC-field. The anomaly is suppressed by DC-field. Additionally, the position and the amplitude of the anomaly are frequency dependent. However, the time dependence of the AC-susceptibility is observable for temperatures above 100 K. The Analysis of the susceptibility (measured with and without superposing DC-field) as function of the time at different temperatures using the Arrhenius law was performed..

Keywords

AC- susceptibility, Magnetic after-effect, Coercivity, Amorphous Nd-Fe-Al alloys.

Submitted at: April 26, 2004
Accepted at: June 10, 2004

Citation

R. Sato Turtelli, J. P. Sinnecker, D. Triyono, R. Grössinger, FREQUENCY, DC-FIELD AND TEMPERATURE DEPENDENCE OF THE AC-SUSCEPTIBILITY OF Nd60Fe30Al10 ALLOY, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 2, pp. 609-614 (2004)