LAUSR

Abstract We conducted magnetization measurements on an S = 3 / 2 “breathing” pyrochlore antiferromagnet LiInCr4O8 in magnetic fields of up to 130 T using a coaxial-type magnetization pickup coil in a horizontal single-turn coil megagauss generator. The magnetization process exhibits a phase transition to a 1/2-magnetization plateau phase accompanied by a sudden increase in the magnetization with a discernible hysteresis at approximately 100 T. In addition, we also observed a shoulder-like behavior in the magnetization process prior to the 1/2-plateau phase, implicating the existence of a novel magnetic phase, peculiar to the “breathing” pyrochlore antiferromagnet.