Details

Autor(en) / Beteiligte

• Sieradzki, A.
• Ciżman, A.
• Komar, J.

Titel

Pressure dependence of dielectric properties of the LiNaGe4O9 ferroelectric

Ist Teil von

• Phase transitions, 2008-11, Vol.81 (11-12), p.999-1004

Ort / Verlag

Taylor & Francis Group

Erscheinungsjahr

2008

Quelle

Taylor & Francis

Beschreibungen/Notizen

• Dielectric properties of lithium-sodium-tetragermanate (LNG) LiNaGe 4 O 9 crystal were investigated under hydrostatic pressure. The phase diagram and phase transition temperature as a function of pressure was constructed. Up to 200 MPa the dependence of T C on pressure is linear with negative slope of 8.5 K/GPa. The influence of pressure on the Curie-Weiss law was observed. It was also shown that with increasing pressure the maximum value of the electric permittivity and Curie-Weiss constant are decreasing. The obtained results revealed complex mechanism of phase transition in the ferroelectric LNG.