Abstract
The Gibbs-free-energy difference ΔGt which determines the phase transition from fourfold to sixfold coordination in ANB8-N compounds is presented for three compounds (CdO, MgO, and AgBr) which are stable at STP in the more-dense (NaCl) structure. The additional data follow a linear trend in spectroscopic ionicity predicted previously from high-pressure data on compounds stable in fourfold coordinated structures. These data resolve ambiguities concerning the proper definition of ionic character in partially covalent compounds with the NaCl structure.
Original language | English (US) |
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Pages (from-to) | 1583-1586 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 11 |
Issue number | 4 |
DOIs | |
State | Published - 1975 |
ASJC Scopus subject areas
- Condensed Matter Physics