Monte Carlo simulation on the indirect exchange interactions of Co-doped ZnO film

Abraham F. Jalbout, Hanning Chen, Scott L. Whittenburg

Research output: Contribution to journalArticlepeer-review

Abstract

Monte Carlo simulations using a three-dimensional lattice model studied the Ruderman-Kittel-Kasuya-Yosida (RKKY) indirect exchange interaction of doped magnetic Co ions in ZnO films. The results of the calculations show that the RKKY interaction in Co-doped ZnO is long ranged and its magnitude is proportional to R-1 (inverse of the distance R from a central Co 2+ ion). The sign oscillates with a frequency that depends on the concentration of the carrier. The long-distance sum of the RKKY indirect exchange energies is positive indicating that these materials are ferromagnetic, in direct correlation with previously reported results.

Original languageEnglish
Pages (from-to)2217-2219
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number12
DOIs
StatePublished - Sep 16 2002

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