Effects of crystal chemistry and local random fields on relaxor and piezoelectric behavior of lead-oxide perovskites

Personalized energy systems based on nanostructured materials

“…Current works in the field of development of nanostructured converters and storage devices are mainly focused on the problems of physical and chemical formation of structural and functional characteristics and the development of methods for technological support of the synthesis of nanodisperse and nanoporous materials [222][223][224][225][226][227][228][229][230][231][232][233][234]. Also their technological applications in different types of converters, in particular, thermoelectric, solar and wind generators, fuel cells, batteries and galvanic batteries, supercapacitors and other devices, up to systems of high-temperature superconductivity are being discussed [235][236][237][238][239][240][241][242][243][244][245][246][247][248].…”

Transition metal-doped SrTiO3: when does a tiny chemical impact have such a great structural response?

“…In this regard, chemical substitution can lead to the appearance of quenched random electric fields and local strains, driving the system toward a glassy or relaxor state with enhanced dielectric and electromechanical properties. [20][21][22][23][24][25] For example, in the case of PbMg 1/ 3 Nb 2/3 O 3 -PbTiO 3 solid solution, the aliovalent substitution of only 2.5 mol%. Pb 2+ on Sm 3+ leads to a sharp increase (almost twice) in the piezoelectric response d 33 to record values for both single crystals and ceramics: up to 4100 pC/N 26 and 1500 pC/ N, 27 respectively.…”

Surfactant-Free Synthesis of Three-Dimensional Perovskite Titania-Based Micron-Scale Motifs Used as Catalytic Supports for the Methanol Oxidation Reaction

“…Ferroelectric perovskite-type oxides, with a general formula of ABO 3 , are noteworthy for their advantageous dielectric, piezoelectric, electrostrictive, and electro-optic properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Understanding the behavior of and the preparation of this interesting family of metal oxide materials with structure-dependent physical properties, at the nanoscale, are of importance to developing viable applications.…”