In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 44, No. 3R ( 2005-03-01), p. 1322-
Abstract:
The microstructures and the microwave dielectric properties of Ca[(Li 1/3 Nb 2/3 ) 1- x Ti x ]O 3-δ (CLNT) ceramics with different amount of glass frit additions were investigated. Addition of glass frit(B 2 O 3 –ZnO–SiO 2 –PbO system) improved the densification and decreased the sintering temperature from 1150°C to 900°C of Ca[(Li 1/3 Nb 2/3 ) 1- x Ti x ]O 3-δ microwave dielectric ceramics. The dielectric constants ( ε r ) and bulk density were increased, as increasing glass contents from 10 wt% to 15 wt%. The quality factor ( Q · f 0 ), however, was decreased slightly. The temperature coefficients of the resonant frequency (τ f ) shifted positive value as glass contents were increased. The dielectric properties of Ca[(Li 1/3 Nb 2/3 ) 0.8 Ti 0.2 ]O 3-δ with 12 wt% glass sintered at 900°C for 3 h were ε r =40, Q · f 0 =12,500, τ f =-8 ppm/°C, respectively. The relationship between the microstructure and dielectric properties of ceramics was studied by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM).
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.44.1322
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2005
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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