In:
Journal of the American Ceramic Society, Wiley, Vol. 97, No. 6 ( 2014-06), p. 1819-1822
Abstract:
In this work, novel series of (1 − x ) Li 2 M O 4 – x TiO 2 (M = Mo, W; x = 0.3, 0.4, 0.45, 0.5, 0.6) ceramics were developed for microwave dielectric application. They were prepared via the mixed‐oxide process and the phase composition, microstructures, sintering behaviors, and microwave dielectric properties were investigated. The X‐ray diffraction (XRD) pattern and scanning electron microscope analysis indicated that the Li 2 M O 4 (M = Mo, W) did not react with rutile Ti O 2 and a stable two‐phase composite system Li 2 M O 4 –Ti O 2 (M = Mo, W) was formed. The XRD pattern of cofired ceramics revealed that some parts of Li 2 Mo O 4 phase and very small part of Li 2 W O 4 phase react with Ag to form Ag 2 Mo O 4 phase and Ag 2 W O 4 phase, respectively. At x = 0.45–0.5, temperature stable microwave dielectric materials with low sintering temperature (700°C–730°C) were obtained: ε r = 10.6–11.0, Qf = 30 060–32 800 GHz, and temperature coefficient of resonant frequency ~0 ppm/°C.
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
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