Percolation transition in a two-dimensional system of Ni granular ferromagnets

Yakov M. Strelniker; Richard Berkovits; Aviad Frydman; Shlomo Havlin

doi:10.1103/physreve.69.065105

Percolation transition in a two-dimensional system of Ni granular ferromagnets

Yakov M. Strelniker, Richard Berkovits, Aviad Frydman, Shlomo Havlin

Department of Physics - at Bar-Ilan University

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

38 Scopus citations

Abstract

The magnetotransport features of the quenched condensed granular Ni thin films were modeled using a random two-dimensional resistor network. The modeling was done to test the condition where a single bond dominates the system. It was assumed that the hopping conductivity depend on the distance between the neighbouring ferromagnetic grains and the mutual orientation of the magnetic moments of Ni grains. The results show the characterizing the transition from weak disorder to strong disorder scales as k÷L ^1÷1.3, where L is the size of the system and k is a measure of disorder.

Original language	English
Article number	065105
Pages (from-to)	065105-1-065105-4
Journal	Physical Review E
Volume	69
Issue number	6 2
DOIs	https://doi.org/10.1103/physreve.69.065105
State	Published - Jun 2004

Bibliographical note

Funding Information:
This research was supported in part by grants from the U.S.–Israel Binational Science Foundation (Grant Nos. 2002–402 and 98–370), the Israel Science Foundation (Grant Nos. 326/02, 276/01, and 274/01), and the KAMEA Fellowship program of the Ministry of Absorption of the State of Israel. We gratefully acknowledge useful conversations with S. V. Buldyrev.

Funding

This research was supported in part by grants from the U.S.–Israel Binational Science Foundation (Grant Nos. 2002–402 and 98–370), the Israel Science Foundation (Grant Nos. 326/02, 276/01, and 274/01), and the KAMEA Fellowship program of the Ministry of Absorption of the State of Israel. We gratefully acknowledge useful conversations with S. V. Buldyrev.

Funders	Funder number
Ministry of Absorption of the State of Israel
U.S.-Israel Binational Science Foundation	98–370, 2002–402
Israel Science Foundation	274/01, 326/02, 276/01

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10.1103/physreve.69.065105

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title = "Percolation transition in a two-dimensional system of Ni granular ferromagnets",

abstract = "The magnetotransport features of the quenched condensed granular Ni thin films were modeled using a random two-dimensional resistor network. The modeling was done to test the condition where a single bond dominates the system. It was assumed that the hopping conductivity depend on the distance between the neighbouring ferromagnetic grains and the mutual orientation of the magnetic moments of Ni grains. The results show the characterizing the transition from weak disorder to strong disorder scales as k÷L 1÷1.3, where L is the size of the system and k is a measure of disorder.",

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Percolation transition in a two-dimensional system of Ni granular ferromagnets

Abstract

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