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Roginskii, E. M.
Effects of pressure-induced phase transition in model Hg2Br2 ferroelastics / E. M. Roginskii, A. S. Krylov, Y. F. Markov // Tech. Phys. Lett. - 2018. - Vol. 44, Is. 9. - P. 757-760, DOI 10.1134/S1063785018090110. - Cited References: 11. - This study was supported in part by programs no. 1.4 "Urgent Problems of Low-Temperature Physics" and no. 1.8 "Condensed-Matter Physics and New-Generation Materials" of the Presidium of the Russian Academy of Sciences.
. - ISSN 1063-7850. - ISSN 1090-6533РУБ Physics, Applied
Рубрики:
HG2I2
Аннотация: Raman spectra of model improper ferroelastics (Hg2Br2 crystals) have been analyzed in a wide range of hydrostatic pressures. The baric dependences of the phonon frequencies are obtained. The revealing and anomalous behavior of the soft mode, which is genetically related to the acoustic phonon (ТА1) at the Brillouin zone boundary (point X) of the tetragonal phase, are most interesting. The buildup of the second acoustic phonon (ТА2) from the same point has also been found in the ferroelastic-phase spectra, and its baric behavior has been investigated. The splitting of doubly degenerate phonons of the Eg symmetry has been revealed at fairly high pressures and explained.
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Публикация на русском языке Рогинский Е. М. Эффекты фазового перехода, индуцированные давлением, в модельных сегнетоэластиках Hg2Br2 [Текст] / Е. М. Рогинский, А. С. Крылов, Ю. Ф. Марков // Письма в Журн. техн. физ. - 2018. - Т. 44 Вып. 17. - С. 3–10
Держатели документа:
Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Markov, Yu. F.; Presidium of the Russian Academy of Sciences [1.4, 1.8]
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