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Title: Effect of uniaxial pressure on the ferroelectric phase transition in Pb5Ge3O11 : Ba crystals
Authors: Molak, Andrzej
Koralewski, M.
Saunders, G.A.
Juszczyk, Wojciech
Keywords: przejścia fazowe; punkt Curie; kryształy; ferroelektryczność
Issue Date: 2005
Citation: Acta Physica Polonica A, Vol. 108, nr 3 (2005), s. 513-520
Abstract: The effect of uniaxial pressure up to 1 kbar applied perpendicular and parallel to c-axis, on the Curie temperature and electric permittivity "c of Ba-doped Pb5Ge3O11 single crystals was investigated. The Curie temperature decreases with uniaxial pressure and the coe±cient °i (°i ´ ±Tc=±Xi) is determined as {7 and {11 K kbar¡1 for the b- and c-axes, respectively. It was found that uniaxial pressure increases the phase transition diffuseness and the tricritical point cannot be achieved for this pyroelectric and ferroelectric single crystal.
ISSN: 0587-4246
Appears in Collections:Artykuły (WNŚiT)

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