Perovskites: crystal structure, important compounds and ...

Perovskites: crystal structure , important compounds and propertiesPeng GaoGMF Group Meeting12,04,2016 Solar energy resourceTerrestrial sun lightGlobal Power DemandPV instillationsTo start We have to solve the energy problem. Any technology that has good potential to cut carbon emissions by > 10 % needs to be explored aggressively. Researchers should not be deterred by the struggles some companies are having. Someone needs to invest in scaling up promising solar cell And Historyof perovskite compoundsPerovskite is calcium titanium oxide or calcium titanate, with the chemical formula CaTiO3. The mineral was discovered by Gustav Rose in 1839 and is named after Russian mineralogist Count Lev AlekseevichPerovski(1792 1856). Allmaterialswith thesamecrystalstructureasCaTiO3,namelyAB X3,are termedperovskites: Very stable structure , large number of compounds , variety of properties, many practical applications. Key role of the BO6octahedrain ferromagnetism and ferroelectricity. Extensive formation of solid solutions material optimization by composition control and phase transition +B4+O2-Ideal cubic perovskite structure (ABO3)Origin And Historyof perovskite compoundsPerovskiteSystemsInorganic Oxide PerovskitesIntrinsic PerovskitesDoped PerovskitesHalide PerovskitesAlkali-halide PerovskitesA2Cl(LaNb2)O7 Organo-Metal Halide PerovskitesClassification of perovskite SystemStructurededuced1959:KongeligeDans keVidenskabernesSelskab, Matematisk-FysikeMeddelelser(1959)32, p1-p17 Author:M

3 Ferroelectricity, piezoelectricity, high dielectric constant Multilayer ceramic capacitors (MLCCs), PTCR resistors, embedded capacitance Most widely used dielectric ceramic T C = 125°C (Ba,Sr)TiO 3 Non-linear dielectric properties Tunable microwave devices Used in the paraelectric state Pb(Zr,Ti)O

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  High, Compound, Important, Structure, Capacitance, Crystal, Lcmc, Perovskite, Crystal structure, Important compounds

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