Superstructure in ceramics revealed by high resolution electron microscopy
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Impact of Cu<inf>2</inf>O doping on high dielectric properties of CuO ceramics
2017, Current Applied PhysicsCitation Excerpt :High-dielectric-constant materials have been paid much attention due to their extensive applications in microelectronics fields such as capacitance and memory devices. Ferroelectric perovskite ceramics, e.g., BaTiO3 (BTO) and Pb (ZrxTi1−x)O3 (PZT) [1–4], show extraordinary high dielectric constants as well as low dielectric losses around the Curie temperature TC. Non-ferroelectric materials, such as perovskite-related CaCu3Ti4O12 (CCTO) [5] and non-perovskite Li0.05Ti0.02Ni0.93O (LTNO) [6], have comparatively high dielectric constants (εr∼104–105) at room temperature which is generally ascribed to the blocking layers between the particles [7,8].
Heat Capacity Study of Functional Ceramics
2013, Handbook of Advanced Ceramics: Materials, Applications, Processing, and Properties: Second EditionLocal Structure of Well-Ordered Crystals and Systems with Competing Interactions
2012, Pergamon Materials SeriesCitation Excerpt :In this compound, the element of disorder is introduced by the occupation of the B-site by two ions with different valences (Mg2 + and Nb5 +) and sizes (0.72 Å for Mg2 + and 0.64 Å for Nb5 +). Interestingly, the initial explanation of relaxor behavior in PMN went in the opposite direction by invoking the presence of chemically ordered domains which result in charge imbalance (Husson et al., 1988). However, this scenario has many problems.
Lead-free relaxors
2008, Handbook of Advanced Dielectric, Piezoelectric and Ferroelectric Materials: Synthesis, Properties and ApplicationsGlass-like structure of a lead-based relaxor ferroelectric
2012, Journal of Applied CrystallographyPerspective on emerging views on microscopic origin of relaxor behavior
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