Effects of compositional changes on luminescence of lead-free Eu3+-doped K1−xNaxNbO3 piezoelectric ceramics
作者： Yanmin Jia , Yongbin Wei , Zheng Wu , Zhihua Zhou , Jianrong Chen
DOI: 10.1016/J.JALLCOM.2013.10.032
关键词: Materials science 、 Piezoelectricity 、 Monoclinic crystal system 、 Photoluminescence 、 Analytical chemistry 、 Dielectric 、 Luminescence 、 Phase boundary 、 Doping 、 Orthorhombic crystal system
摘要: Abstract Eu 3+ -doped lead-free K 1 − x Na NbO 3 piezoelectric ceramics were synthesized by a conventional solid-state reaction technique. The structure transition related to the monoclinic phase orthorhombic is located in x = 0.50 measuring dielectric and constants of ceramics. Increasing from 0.42 0.56, photoluminescence peak intensity red emission at 615 nm decreased firstly then increases, giving extreme point 0.50. strong dependence on was attributed high hypersensitivity changes lattice environment. advantages noncontact, quick response simple operation make it potential be used investigating compositional near morphotropic boundary
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