![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The pressure dependences of the frequencies and line widths of the internal modes of CsH2PO4 were studied. The first-order phase transition induced by pressure was confirmed at 23.2 kbar and at 7.6 kbar with increasing and decreasing pressure respectively. One of v 2 modes was observed only in the low-pressure phase. The frequency and the line width behaviors of this mode against pressure change around 16 kbar and are discussed in relation to the vanishing of the ferroelectric phase transition within the low-pressure phase.