LTCC and Bulk Zn4B6O13–Zn2SiO4 Composites for Submillimeter Wave Applications
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Łukasiewicz Research Network—Institute of Microelectronics and Photonics, Kraków Division, ul. Zabłocie 39, 30-701 Kraków, Poland
2
Institute of Optoelectronics, Military University of Technology, ul. gen. W. Urbanowicza 2, 00-908 Warszawa, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Dong-Joo Kim
Materials 2021, 14(4), 1014; https://doi.org/10.3390/ma14041014
Received: 29 January 2021
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Revised: 15 February 2021
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Accepted: 18 February 2021
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Published: 21 February 2021
(This article belongs to the Special Issue Materials for LTCC Technology)
New zinc metaborate Zn4B6O13–willemite Zn2SiO4 composites were investigated as promising materials for LTCC (low temperature cofired ceramics) substrates of microelectronic circuits for submillimeter wave applications. Composites were prepared as bulk ceramics and LTCC multilayer structures with cofired conductive thick films. The phase composition, crystal structure, microstructure, sintering behavior, and dielectric properties were studied as a function of willemite content (0, 10, 13, 15, 20, 40, 50, 60, 100 wt %). The dielectric properties characterization performed by THz time domain spectroscopy proved the applicability of the composites at very high frequencies. For the 87% Zn4B6O13–13% Zn2SiO4 composite, the best characteristics were obtained, which are suitable for LTCC submillimeter wave applications. These were a low sintering temperature of 930 °C, compatibility with Ag-based conductors, a low dielectric constant (5.8 at 0.15–1.1 THz), a low dissipation factor (0.006 at 1 THz), and weak frequency and temperature dependences of dielectric constant.
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Keywords:
Zn4B6O13-Zn2SiO4 composite; low temperature cofired ceramics; dielectric properties; THz time domain spectroscopy; submillimeter wave applications
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MDPI and ACS Style
Szwagierczak, D.; Synkiewicz-Musialska, B.; Kulawik, J.; Pałka, N. LTCC and Bulk Zn4B6O13–Zn2SiO4 Composites for Submillimeter Wave Applications. Materials 2021, 14, 1014. https://doi.org/10.3390/ma14041014
AMA Style
Szwagierczak D, Synkiewicz-Musialska B, Kulawik J, Pałka N. LTCC and Bulk Zn4B6O13–Zn2SiO4 Composites for Submillimeter Wave Applications. Materials. 2021; 14(4):1014. https://doi.org/10.3390/ma14041014
Chicago/Turabian StyleSzwagierczak, Dorota, Beata Synkiewicz-Musialska, Jan Kulawik, and Norbert Pałka. 2021. "LTCC and Bulk Zn4B6O13–Zn2SiO4 Composites for Submillimeter Wave Applications" Materials 14, no. 4: 1014. https://doi.org/10.3390/ma14041014
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