Title :
Photoacoustic study of phase transition in graphite intercalation compound with SbCl5
Author :
Andrusenko, D.A. ; Ilyin, P.P. ; Kucherov, I.Ya. ; Matzui, L.Yu.
Author_Institution :
Phys. Fac., Kiev Univ., Ukraine
Abstract :
Photoacoustic (PA) effect was studied in graphite intercalation compounds with SbCl5 under piezoelectric detection of PA signal. Highly-oriented pyrolytic graphite and disordered pyrolytic graphite were used as initial material. Temperature dependence of amplitude and phase of PA signal was studied in the interval 90-270 K. It has been found that in both types of samples the amplitude and phase have sharp extremum near 220 K, that is interpreted as due to a phase transition in GICs about this temperature. The numerical evaluations lead to conclusion that under piezoelectric detection the variation of volume on account of phase transition has main influence on formation of PA signal in region of phase transition
Keywords :
antimony compounds; graphite intercalation compounds; photoacoustic effect; piezoelectricity; solid-state phase transformations; 90 to 270 K; CSbCl5; GICs; PA signal; SbCl5; disordered pyrolytic graphite; graphite intercalation compound; highly-oriented pyrolytic graphite; phase; phase transition; photoacoustic study; piezoelectric detection; temperature dependence; Atomic layer deposition; Attenuation; Conducting materials; Crystallization; Phase detection; Physics; Piezoelectric polarization; Signal detection; Temperature dependence; X-rays;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495654
