In:
Journal of the American Ceramic Society, Wiley, Vol. 97, No. 6 ( 2014-06), p. 1918-1922
Abstract:
Novel microwave dielectric ceramics in the Li 2 MnO 3 system with high Q prepared through a conventional solid‐state route had been investigated. All the specimens exhibited single phase ceramics sintered in the temperature range 1140°C–1230°C. The microwave dielectric properties of Li 2 MnO 3 ceramics were strongly correlated with sintering temperature and density. The best microwave dielectric properties of ε r = 13.6, Q × f = 97 000 (GHz), and τ f = −5.2 ppm/°C could be obtained as sintered at 1200°C for 4 h. BaCu ( B 2 O 5 ) ( BCB ) could effectively lower the sintering temperature from 1200°C to 930°C and slightly induced degradation of the microwave dielectric properties. The Li 2 MnO 3 ceramics doped with 2 wt% BaCu ( B 2 O 5 ) had excellent dielectric properties of ε r = 11.9, Q × f = 80 600 (GHz), and τ f = 0 ppm/°C. With low sintering temperature and good dielectric properties, the BCB added Li 2 MnO 3 ceramics are suitable candidates for LTCC applications in wireless communication system.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2014.97.issue-6
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
Permalink