Authors: Baoyu Huang Zhefei Wang Tao Chen Lixi Wang Zhenxiao Fu Qitu Zhang
Publish Date: 2015/02/22
Volume: 26, Issue: 5, Pages: 3375-3379
Abstract
Ba42Nd92Ti18−xSnxO54x = 0 025 05 1 15 2 microwave dielectric ceramics with high Q × f value were prepared by conventional solid state route The microstructure and microwave dielectric properties of Ba42Nd92Ti18−xSnxO54x = 0 025 05 1 15 2BNTS ceramics were systematically investigated XRD patterns showed that there was only a single BaNd2Ti5O14 phase identified in all samples and no second phase was found SnO2 substitution increases the lattice parameters of BNT ceramic Moreover the bulk density of BNT ceramics increases as the x increases Both the permittivity and τ f value decrease when the Sn concentration increases The SnO2 substitution has a big influence on Q × f value When x = 05 the BNTS ceramic gains the highest Q × f value Afterwards the Q × f value decreases sharply when x value increases Excellent microwave dielectric properties were achieved in Ba42Nd92Ti18−xSnxO54x = 05 ceramics sintered at 1340 °C for 2 h ε r = 806 Q × f = 9177 GHz τ f = 61 ppm/°CThis work was supported by Priority Academic Program Development of Jiangsu Higher Education Institutions PAPD the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure Project No SKL201309SIC and Science and Technology Projects of Guangdong Province Project No 2011A091103002 College Industrialization Project of Jiangsu Province JHB201212
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