Abstract
The central peak of quartz near the incommensurate (INC) phase was investigated by means of the high-resolution light-scattering technique. It was found that the observed central peak includes a broad dynamical component in addition to the previously reported narrow static component. The line-width (approximate range 1.5-5 GHz) of the broader component decreases in proportion to Delta T=T-Ti in the beta phase (Ti is the beta -INC phase transition temperature), and its intensity shows a maximum at Ti. It becomes very weak when the temperature is close to Tc (INC to alpha phase transition temperature), while the linewidth is within the instrumental linewidth of 0.6 GHz throughout the INC phase. Possible origins of the peaks are briefly discussed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
