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Enhanced flexural strength and microwave dielectric properties of Li2MgTi3O8-based low temperature co-fired ceramics.

Enhanced flexural strength and microwave dielectric properties of Li2MgTi3O8-based low temperature co-fired ceramics.

Authors :
Deng, Haiqing
Qu, Xin
Gao, Pengxiang
Liu, Yang
Chen, Weilin
Chen, Xiuli
Zhou, Huanfu
Source :
Journal of Materials Chemistry C; 12/14/2023, Vol. 11 Issue 46, p16346-16355, 10p
Publication Year :
2023

Abstract

With the rapid development of 6G wireless communication, research on highly integrated and multifunctional miniature electronic components has gained significant attention. Li<subscript>2</subscript>MgTi<subscript>3</subscript>O<subscript>8</subscript> (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<subscript>f</subscript> = −6.02 ppm °C<superscript>−1</superscript>, ε<subscript>r</subscript> = 24.53, and σ<subscript>f</subscript> = 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<subscript>f</subscript> = −9.50 ppm °C<superscript>−1</superscript>, ε<subscript>r</subscript> = 24.94, and σ<subscript>f</subscript> = 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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20507526
Volume :
11
Issue :
46
Database :
Complementary Index
Journal :
Journal of Materials Chemistry C
Publication Type :
Academic Journal
Accession number :
174493132
Full Text :
https://doi.org/10.1039/d3tc02976j