G. V. Samsonov, I. Gil'man
Nov 1, 1974
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Journal
Soviet Powder Metallurgy and Metal Ceramics
Abstract
Conclusions1.An examination is made of literature data on the principal physical properties of the oxides of the lanthanides and their correlation with the electronic structures of the lanthanides and oxygen.2.It is demonstrated that the physical properties of lanthanide oxides are determined by the character of the division of the valence electrons of the lanthanides and oxygen ions into localized and unlocalized electrons and by the probability of stable electron configurations (f0,f7,f14, and s2p6) being formed by them. A decrease in the degree of localization and an increase in the proportion of unlocalized electrons lower the melting point of lanthanide oxides and decrease their electrical resistivity, forbidden band width, and work function in thermionic emission.