The effect at the nanoscale of a Ti interfacial layer on performances TiN/HfZrO/TiN capacitors is reported. Ferroelectric hafnium zirconium oxide (HZO) synthesized by magnetron sputtering ceramic target. Titanium nitride top and bottom electrodes are grown reactive sputtering. insertion an ultra‐thin electrode/HZO interface impacts crystalline phase electrical properties ferroelectric HZO. Foll...

Mixed system of (1-x)Na0.5Bi0.5TiO3+(x)SrTiO3 (NBT-ST) where x=0.075, 0.125, 0.150, 0.200 ferroelectric ceramic materials are synthesized using modified pechini method. These optimized compositions used for study polarization versus electric field (P-E) loops. The response the samples is investigated as a function temperature. Remnant exhibited loops observed to decrease with increasing PE data...

Understanding the atomic-scale structure of surfaces and interfaces is essential to control the functional properties of many materials and devices. Recent advances in aberration-corrected scanning transmission electron microscopy (STEM) have made possible the direct characterization of localized atomic structure in ceramic materials, especially grain boundaries and heterointerfaces. In STEM, a...

The complex dielectric permittivity of a sintered ceramic tablet consisting 70.5% BiFeO3, 27.7% Bi2Fe4O9 and 1.8% Bi25FeO40 was analyzed as function temperature from – 120 °C to 230 in two separate runs. results reveal complicated response with activated relaxation processes. first is purely Arrhenius related hopping processes between Fe3+ Fe2+ traps induced by oxygen vacancies at grain boundar...

Currently, researchers are mainly focusing the phase transitions, domain structures, domain wall functionalities, magneto electric coupling, and the potential applications in high-density ferroelectric non-volatile memories of ferroelectric materials [1-5]. However, there are relatively less research interests in the biomedical applications of ferroelectric materials which is very important to ...

In the end of 1940s young soviet scientist Georgii Smolenskii discovered ferroelectric properties in lead titanate (PbTiO 3) [1] and found an anomaly in the temperature dependence of the dielectric constant in lead zirconate (PbZrO 3) [1,2]. This encouraging result was also independently obtained by G. Shirane [3] and G. Roberts [4]. Based on this data, Smolenskii came to the conclusion that Pb...

Quantum ferroelectric and ferroelectric relaxor behavior has been found in (Sr121.5xBix)TiO3. For x <0.0267, the quantum ferroelectric relationship T«m}(x2xc) 1/2 holds with xc'0.0005, and obvious hysteresis loops were observed. The polarization relaxation shows critical slowing down. At high Bi concentration, a crossover from quantum ferroelectric to relaxor behavior occurred. The coexistence ...