1999/11/25 by A. B. Pakhomov, Pakhomov, A. B., Juliano C. Denardin +7
Earth and Planetary Sciences · Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.mtrl-sci #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.cond-mat/9911414
This paper has been withdrawn by the authors, as some results were not confirmed in later experiments
openalex publication_date 1999/11/25 · arxiv created 2000/02/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
(withdrawn) A combined study of magnetic susceptibility and AC resistance was performed on melt-spun Cu-Co granular magnetic ribbons. The AC resistance as a function of temperature has a sharp maximum. We associate it with a diverging correlation length at the temperature of collective freezing of magnetic moments via increasing magnetic losses in the induced non-uniform field. Application of this model to the experimental data allows a direct determination of the critical exponent of correlation length on both sides of the transition. Giant AC magnetoresistance is observed at the freezing temperature.