Molak, A.
(Condensed Matter Physics, 2013)
The measured value of effective electric permittivity ϵeff of several compounds, e.g., (BiNa)(MnNb)O₃, (BiPb)(MnNb)O₃, and BiMnO₃ increases from a value ≅10÷100 at the low temperature range (100÷300 K) up to the high value ...