Study of the Tricritical Point in KPby-Ray and Neutron Diffractometry
- 30 January 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 40 (5), 337-340
- https://doi.org/10.1103/physrevlett.40.337
Abstract
The existence of a pressure-induced tricritical point in potassium dihydrogen phosphate was investigated by direct measurements of the spontaneous shear angle as a function of temperature using -ray diffractometry at pressures up to 2.15 kbar. High-resolution neutron diffractometry was applied to the measurement of the critical behavior of the lattice constant at various pressures up to 3.5 kbar. The results of the two methods agree and indicate tricritical behavior at a pressure of about 2 kbar.
Keywords
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