Applied Physics Letters
Biochemistry | Chemistry | Life Sciences | Physical Sciences and Mathematics | Physics
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 ZnOfilms. The results of the calculations show that the RKKY interaction in Co-doped ZnO is long ranged and its magnitude is proportional to (inverse of the distance from a central 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.
© 2002 American Institute of Physics
Jalbout, Abraham F.; Chen, Hanning; and Whittenburg, Scott L., "Monte Carlo Simulation on the Indirect Exchange Interactions of Co-doped ZnO Film" (2002). Chemistry and Biochemistry Faculty Publications. 60.