Lanthanum manganite

Lanthanum manganite
Properties
LaMnO3
Molar mass 241.84 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Lanthanum manganite is an inorganic compound with the formula LaMnO3, often abbreviated as LMO. Lanthanum manganite is formed in the perovskite structure, consisting of oxygen octahedra with a central Mn atom. The cubic perovskite structure is distorted into an orthorhombic structure by a strong Jahn-Teller distortion of the oxygen octahedra.[1]

Lanthanum manganite alloys

Lanthanum manganite is an electrical insulator and an A-type antiferromagnet. It is the parent compound of several important alloys, often termed rare-earth manganites or colossal magnetoresistance oxides. These families include lanthanum strontium manganite, lanthanum calcium manganite and others.

In lanthanum manganite, both the La and the Mn are in the +3 oxidation state. Substitution of some of the La atoms by divalent atoms such as Sr or Ca induces a similar amount of tetravalent Mn+4 atoms. Such substitution, or doping can induce various electronic effects, which form the basis of a rich and complex electron correlation phenomena that yield diverse electronic phase diagrams in these alloys.[2]

See also

References

  1. ↑ S. Satpathy; et al. (1996). "Electronic Structure of the Perovskite Oxides: La1-xCaxMnO3". Physical Review Letters. 76: 960. doi:10.1103/PhysRevLett.76.960.
  2. ↑ Dagotto, E. Nanoscale Phase Separation and Colossal Magnetoresistance. Springer. ISBN 978-3-662-05244-0.
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