A Manganise Ions Ground State in MnxSi1-x : Negative - U Properties Centre?
Abstract
The properties of magnetic deluted and strong correlated systems of MnxSi1-x systems are discussed. In frame work of the model of the double defects including manganese ion and silicon vacancy are considered properties of these systems. The role of the Jahn -Teller distortions of different symmetry types in MnSi system magnetic-properties formation is discussed. It has been established that defect Mns+1 - Vsio is the center with negative-U properties and Jahn-Teller's full symmetric vibration mode initiates change of a crystal-field value from intermediate (a configuration - Mns+1 - Vsio) to strong (a configuration -Mns-1 - Vsi+2).
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