Stabilization of orthorhombic distortions in Cu-doped and Co-doped ferrimagnetic Mn3O4

Using synchrotron x-ray diffraction, we investigate how the tetragonal-to-orthorhombic phase transition in the ferrimagnetic (c > a) spinel Mn3O4 is driven by the t(2) orbital degeneracy of Cu2+ (3d(9)) ions doped in its tetranderal sites. At high temperatures where the orthorhombic phase initial...

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