Interaction effects and magnetic ordering in GMR alloys

S. J. Greaves; M. El-Hilo; K. O'Grady; M. Watson

doi:10.1063/1.358472

Interaction effects and magnetic ordering in GMR alloys

S. J. Greaves, M. El-Hilo, K. O'Grady, M. Watson

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

In this paper AgNiFe alloy films were examined both before and after annealing. Characterization of the samples and examination of interaction effects was carried out by measuring the temperature decay of remanence, initial susceptibility, and magnetoresistance. The temperature decay of remanence reveals that annealing widens the distribution of energy barriers, which is indicative of grain growth. The behavior of the initial susceptibility as a function of temperature is analogous to that found in spin glasses. From these measurements, it is believed that interaction effects in these systems are small.

Original language	English
Pages (from-to)	6802-6804
Number of pages	3
Journal	Journal of Applied Physics
Volume	76
Issue number	10
DOIs	https://doi.org/10.1063/1.358472
Publication status	Published - 1994

ASJC Scopus subject areas

Physics and Astronomy(all)

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AU - El-Hilo, M.

AU - O'Grady, K.

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AB - In this paper AgNiFe alloy films were examined both before and after annealing. Characterization of the samples and examination of interaction effects was carried out by measuring the temperature decay of remanence, initial susceptibility, and magnetoresistance. The temperature decay of remanence reveals that annealing widens the distribution of energy barriers, which is indicative of grain growth. The behavior of the initial susceptibility as a function of temperature is analogous to that found in spin glasses. From these measurements, it is believed that interaction effects in these systems are small.

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