Monte Carlo simulations have been carried out on an array of 8×8×8 Ising spins in which two kinds of exchange integrals,
JA(>0) and
JB(<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
i=1N|\barσ
i|, where \barσ
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
JA=−
JB=
J.
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