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조이현(L. H. Cho),김인기(I. G. Kim),이재일(J. I. Lee),장영록(Y. R. Jang),박인호(I. H. Park),최성을(S. E. Choi),권명희(M. H. Kwon) 한국자기학회 1999 韓國磁氣學會誌 Vol.9 No.3
The magnetism and electronic structure of Ru monolayer with square lattice is investigated using the FLAPW band method. The dependence of total energies on the lattice constant was calculated for three magnetic states, i.e., para-, ferro-, and antiferromagnetic ones. It was found that there is no energy difference between para- and antiferromagnetic states for all the lattice constant. The possibility of antiferromagnetism in square Ru monolayer is thus excluded. The ferromagnetic state is most stable for the lattice constants greater than 7.30 a.u. The energy minimum is found at the lattice constant of 6.53 a.u. where it is paramagnetic. It is calculated that the magnetic moment is 2.49 μ_B at 7.72 a.u., which is close to the lattice constant of Ag. The magnetic moment is almost saturated to be 2.57 μ_B at the lattice constant of 7.86 a.u.