Computer Simulations on the Phase Transition in a Random Bond-Mixture of the Ising Ferro and Antiferromagnet on the S.C.Lattice
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概要
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Monte Carlo simulations have been carried out on an array of 8×8×8 Ising spins in which two kinds of exchange integrals, J_A(>0) and J_B(<0), are randomly distributed. A new type of ordering is found to occur below a certain temperature in the region of the intermediate concentration of bond, where neither ferro nor antiferromagnetic ordering appears. The new order parameter is defined by (1/N) Σ^N_i=_1∣σ^^-_i∣, where σ^^-_i is the thermal average of the spin at the i-th site. In this region the transition temperatures turn out to be almost constant against the concentration in the case of J_A=-J_B=J.
- 社団法人日本物理学会の論文
- 1976-10-15
著者
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ONO Ikuo
Department of Physics, Tokyo Institute of Technology
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Matsuoka Yutaka
Department Of Pharmacology Faculty Of Pharmaceutical Sciences Science University Of Tokyo
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Matsuoka Yutaka
Department Of Physics Tokyo Institute Of Technology:(present Address) Musashino Electrical Communica
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Ono Ikuo
Department Of Physics Tokyo Institute Of Tchnology
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