Abstract
A well-known model of ferroelectricity in potassium dihydrogen phosphate type crystals is extended to provide a description of observed transverse susceptibility in KH2PO4 and KH2AsPO4, the temperature dependence of which exhibits the expected antiferroelectric characteristics. Experimental data can be used in principle to determine the bond-bond interaction parameter J and the tunneling integral. Available data provide satisfactory order-of-magnitude results, and are in qualitative agreement with determinations based on other experiments with regard to the relative values of in two isomorphs. It is shown that more refined experimental data would contribute to a further understanding of this example of simultaneous ferroelectricity and antiferroelectricity in a single medium.
| Original language | English |
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| Pages (from-to) | 1024-1028 |
| Number of pages | 5 |
| Journal | Physical Review B |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1974 |