Abstract
Magnetic properties of polycrystalline samples in the perovskite-like compound ThCu 3Mn 4O 12 (space group Im 3) have been investigated by neutron diffraction, magnetization and susceptibility measurements. This compound is ferrimagnetic with a colinear spin configuration, below T c = 430 K; at 4.2 K the spontaneous magnetization is 9.5 μ B/f.u. The colinear structure is stabilized by a strong antiferromagnetic coupling between copper and maganese cations.
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