INVESTIGADORES
MASSA Nestor Emilio
artículos
Título:
Effect of hydrostatic pressure on the incommensurate phase of K2Se04
Autor/es:
W. PRESS; C, F. MAJKRZAK; J. D. AXE; J. R. HARDY; N. E. MASSA; F. G. ULLMAN
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
AIP publishing
Referencias:
Lugar: Melville; Año: 1980 vol. 22
ISSN:
0163-1829
Resumen:
A neutron scattering study of the effect of hydrostatic pressure on the incommensurate phase transformation in K2Se04 was performed in order to obtain information concerning the nature of the competing forces that give rise to a structural instability at a general wave vector. It was found that an increase in pressure lowers the transition temperature (dT;/dPI =?6.5 K/kbar) and results in a smaller value of the initial incommensurate wave vector. The pressure dependenceof the incommensurate to ferroelectric phase transition was also investigated (AT, /dP, =?9 K/kbar). The latter transition displays a distinct pressure hysteresis.
