Phys. Rev. 100, 564–573 (1955)Theory of the Role of Covalence in the Perovskite-Type Manganites [La, M(II)]MnO3Received 16 May 1955; published in the issue dated October 1955 The theory of semicovalent exchange is reviewed and applied to the perovskite-type manganites [La, M(II)]MnO3. With the hypothesis of covalent and semicovalent bonding between the oxygen and manganese ions plus the mechanism of double exchange, detailed qualitative predictions are made about the magnetic lattice, the crystallographic lattice, the electrical resistivity, and the Curie temperature as functions of the fraction of Mn4+ present. These predictions are found to be in accord with recent findings from neutron-diffraction and x-ray data as well as with the earlier experiments on this system by Jonker and van Santen. © 1955 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.100.564
DOI:
10.1103/PhysRev.100.564
PACS:
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