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Science Newsletter of the Faculty fo Physics
This is a new bulletin, which, as we hope, will bring fresh, updated information on scientific news, research activities, and related events in the life of our department to our staff members, undegraduate and graduate students, postdocs, collaborators and partners. We greatly hope that this Science Newsletter will help us to find new partners in research and shorten the way from fundamental research to applications and innovations, from our fundamental discoveries to their successful implementations in not too distant future.
XIV National School-Seminar "Wave phenomena in inhomogeneous media"
The conference papers from the School-Seminar «Waves-2014» will be submitted for publishing in the Memoirs of the Faculty of Physics journal.
| Journals » Memoirs of the Faculty of Physics » Issues » 2014 » # 5 |
Photoacoustic investigations of the Gruneisen parameter for cadmium diphosphide in the field of commensurate-incommensurate phase transition
N.I. Odina, A.S. Polushko
Department of Acoustics, Faculty of Physics, M.V. Lomonosov Moscow State University. Moscow 119991, Leninskie gory 1-2, Russia.The results of the experimental studies of the temperature dependence of the normalized Gruneisen parameter for cadmium diphosphide single crystal in the field of commensurate-incommensurate phase transition are presented. Measurements were made using laser photoacoustic method with harmonic excitation and piezoelectric registration in the temperatures interval of 280-330 K. Anomalies of the temperature dependence of the amplitude of the photoacoustic signal is proportional to the Gruneisen parameter were observed in the temperature range of 305-322 K. These anomalies are associated with the occurrence of phase transitions from commensurate to incommensurate phase. The estimation of the temperature dependence of the normalized Gruneisen parameter using literature data and comparison with experimental data were made.
| URL: | http://uzmu.phys.sunmarket.com/abstract/2014/5/145316 |
| PACS: | 43.35.+d Ultrasonics, quantum acoustics, and physical effects of sound |
| UDC: | 534.2 |
| Цитата: | Н.И. Одина, А.С. Полюшко. Фотоакустические исследования параметра Грюнайзена дифосфида кадмия в области фазового перехода соизмеримая-несоизмеримая фаза // Учен. зап. физ. фак-та Моск. ун-та. 2014. № 5. 145316 |