Enhanced flexural strength and microwave dielectric properties of LiMgTiO-based low temperature co-fired ceramics
With the rapid development of 6G wireless communication, research on highly integrated and multifunctional miniature electronic components has gained significant attention. Li 2 MgTi 3 O 8 (LMT) ceramics are excellent microwave dielectric materials. However, their high sintering temperature and low...
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Published in | Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 11; no. 46; pp. 16346 - 16355 |
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Main Authors | , , , , , , |
Format | Journal Article |
Published |
30.11.2023
|
Online Access | Get full text |
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Summary: | With the rapid development of 6G wireless communication, research on highly integrated and multifunctional miniature electronic components has gained significant attention. Li
2
MgTi
3
O
8
(LMT) ceramics are excellent microwave dielectric materials. However, their high sintering temperature and low flexural strength limit their application in LTCC devices. Therefore, in this study, TiN-doped LMT ceramics were prepared using a traditional solid-state reaction method, and the effects of TiN addition on the LMT ceramics were investigated. The best performance of
Q × f
= 67 275 GHz,
τ
f
= −6.02 ppm °C
−1
,
r
= 24.53, and
σ
f
= 174.7 MPa was obtained for LMT ceramics doped with 0.2 wt% TiN sintered at 1025 °C. The addition of 1 wt% LiF and 1 wt% MgO to LMT + 0.3 wt% TiN (LMT-NFM) ceramics reduced the sintering temperature, increased the density, and enhanced the flexural strength of the ceramics. When the sintering temperature was 850 °C, the material exhibited the best performances with
Q × f
= 53 477 GHz (at 7.48 GHz),
τ
f
= −9.50 ppm °C
−1
,
r
= 24.94, and
σ
f
= 200.98 MPa. The LMT-NFM ceramic could coexist with the Ag electrode, indicating that it is a promising material for manufacturing ceramic multilayer packaging substrates and various functional components.
The flexural strength of LMT-NFM ceramics reaches a maximum of 200.98 MPa, which is 101.9% higher than that of pure LMT ceramics. |
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ISSN: | 2050-7526 2050-7534 |
DOI: | 10.1039/d3tc02976j |