Colossal dielectric constants: A common phenomenon in CaCu3Ti4O12 related materials
J Sebald, S Krohns, P Lunkenheimer… - Solid state …, 2010 - Elsevier
In the present work we demonstrate that in addition to the well-known colossal-dielectric-
constant material CaCu3Ti4O12 various members of the series Ln2/3Cu3Ti4O12 with Ln=
La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm also exhibit giant values of the dielectric
constant. Just as CaCu3Ti4O12, all these materials show a Maxwell–Wagner type relaxation
process. For the best material, Pr2/3Cu3Ti4O12, we provide a detailed investigation of its
dielectric properties in a broad frequency range up to 1 GHz. Polarization at internal barriers …
constant material CaCu3Ti4O12 various members of the series Ln2/3Cu3Ti4O12 with Ln=
La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm also exhibit giant values of the dielectric
constant. Just as CaCu3Ti4O12, all these materials show a Maxwell–Wagner type relaxation
process. For the best material, Pr2/3Cu3Ti4O12, we provide a detailed investigation of its
dielectric properties in a broad frequency range up to 1 GHz. Polarization at internal barriers …
