"soft mode; central mode; ferroelectric transition"@en . "Ostapchuk, Tetyana" . "Broad-band dielectric spectroscopy andferroelectric soft-mode response in the Ba0.6Sr0.4TiO3 solid solution"@en . "Journal of Physics-Condensed Matter" . . . . "P(IAA100100907), P(ME08109), Z(AV0Z10100520)" . . "Ceramic Ba0.6Sr0.4TiO3 samples were studied in the broad spectral range of 106-1014 Hz by using several dielectric techniques in between 20 and 800 K. The soft-mode response in the vicinity of the ferroelectric transition was shown to consist of two coupled overdamped THz excitations, which show classical features of a coupled soft and central mode. In all the ferroelectric phases, additional relaxation dispersion appeared in the GHz range, assigned to ferroelectric domain-wall dynamics." . "47" . . . "Petzelt, Jan" . "Ku\u017Eel, Petr" . "0953-8984" . "RIV/68378271:_____/09:00334830!RIV10-MSM-68378271" . . "Bovtun, Viktor" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "Broad-band dielectric spectroscopy andferroelectric soft-mode response in the Ba0.6Sr0.4TiO3 solid solution" . . "Broad-band dielectric spectroscopy andferroelectric soft-mode response in the Ba0.6Sr0.4TiO3 solid solution" . . . . "RIV/68378271:_____/09:00334830" . "Vilarinho, P." . "21" . "Ostapchuk, Tetyana" . "305536" . "Bovtun, Viktor" . . "Ceramic Ba0.6Sr0.4TiO3 samples were studied in the broad spectral range of 106-1014 Hz by using several dielectric techniques in between 20 and 800 K. The soft-mode response in the vicinity of the ferroelectric transition was shown to consist of two coupled overdamped THz excitations, which show classical features of a coupled soft and central mode. In all the ferroelectric phases, additional relaxation dispersion appeared in the GHz range, assigned to ferroelectric domain-wall dynamics."@en . "5"^^ . "Ponomareva, I." . . "Hlinka, Ji\u0159\u00ED" . . . "10"^^ . "[A69CC09553A9]" . "Lisenkov, S." . "Broad-band dielectric spectroscopy andferroelectric soft-mode response in the Ba0.6Sr0.4TiO3 solid solution"@en . "Bellaiche, L." . "000271519200017" . "Tkach, A." . . . "9"^^ . . . .