In this paper the optical and electrical characterization of a 75 × 75 μm2 uncooled bolometers based on free-standing La0.7Sr0.3MnO3 /CaTiO3 (LSMO/CTO) thin films fabricated by micromachining of the silicon substrates is presented. R(T) curves have been compared to electro thermal simulations. Its thermal conductance was measured to be 9 × 10−6 W·K−1 around 300 K. The optical characterization w...

We compare first-principles (FP) calculations of the ionic effective charges, phonon frequencies, and static dielectric permittivities κs of several perovskite-type materials. Transition metal ions have anomalously large effective charges, though in the double perovskite CaAl1/2Nb1/2O3 (CAN), the effective charge of Nb is significantly lower than in the simple perovskite KNbO3, showing differen...

Memristor exhibit interesting and valuable circuit properties and have thus become the subject of increasing scientific interest. Scientists wonder if they can conceive a microwave memristor that behaves as a memristor operating with electromagnetic fields. Here, we report a microwave memristive-like nonlinear phenomenon at room temperature in dielectric metamaterials consisting of CaTiO3-ZrO2 ...

Isotope fractionations associated with high temperature evaporation provide important constraints on the physicochemical processes that affected planetary materials at the birth of the solar system. Previous evaporation experiments have focused on isotopic fractionation of moderately to highly volatile elements. Here, we investigate the isotope fractionation behavior of two highly refractory el...