Premium
Relationship Between Bond Ionicity, Lattice Energy, and Microwave Dielectric Properties of Zn ( Ta 1− x Nb x ) 2 O 6 Ceramics
Author(s) -
Xia WangSuo,
Li LingXia,
Ning PingFan,
Liao QingWei
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05231.x
Subject(s) - lattice energy , chemical bond , chemistry , dielectric , crystal structure , lattice (music) , crystallography , bond energy , ion , ceramic , microwave , materials science , molecule , organic chemistry , physics , optoelectronics , quantum mechanics , acoustics
The crystalline structure refinement, chemical bond ionicity, and lattice energy were carried out for Zn ( Ta 1− x Nb x ) 2 O 6 ceramics with tri‐α‐ PbO 2 structure to investigate the correlations between the crystalline structure, phase stability, bond ionicity, and microwave dielectric properties. The chemical bond ionicity and lattice energy of the Zn Ta 2 O 6 system were calculated and evaluated using a semiempirical method based on the dielectric description theory proposed by Phillips, Van Vechten, and Levine ( P – V – L theory). The crystalline structure stability varied with the content of Nb 5+ ion resulted in the lattice energy decrease. The increase of Ta / Nb – O bond ionicity was observed in the crystalline structure, which should be main contribution to electric polarization. The dielectric properties of the Zn ( Ta 1− x Nb x ) 2 O 6 ceramics were strongly dependent on the chemical bond ionicity of Ta / Nb – O bond with tri‐α‐ PbO 2 structure.