RT Journal Article
T1 Microwave dielectric properties of LiM(PO3)3 (M = Mg2+, Zn2+) ceramics
A1 Sadin, Younes
A1 Schmidt, Rainer
A1 Taheri-Nassaj, Ehsan
A1 Yourdkhani, Amin
A1 González Barrios, Marta María
A1 Prado Gonjal, Jesús de la Paz
A1 Myllymäki, Sami
A1 Jantunen, Heli
A1 Barzegar-Bafrooei, Hadi
AB Microwave dielectric ceramics with low dielectric permittivity εr combined with low ceramic sintering temperatures have raised considerable research interest recently due to their potential application in LTCC technology for 5G wireless communications. Here in this study, ceramic processing, crystal structure, and microwave dielectric properties of LiM(PO3)3 (M = Mg2+, Zn2+) ceramics were comprehensively investigated. Optimized LTCC compatible ceramic sintering processes were developed at 725 °C and 625 °C for 10 h, respectively, leading to high relative densities of 96.27 % and 94.09 %. Low microwave εr values of 5.74 and 6.30 and Q × f values of 16,660 GHz and 9629 GHz (at 14 GHz) were obtained, where such values were found to be affected by the grain microstructure. LiMg(PO3)3 exhibited a small τf of −11 ppm/°C, while LiZn(PO3)3 showed −58 ppm/°C. Complementary impedance spectroscopy measurements indicated modest Li+-ion conductivity with a higher value of 2.92·10−7 (Ωcm)−1 at 560 K (287 °C) in LiZn(PO3)3. Both ceramics were found to be dielectrically homogeneous without any perceptible contributions from the grain boundaries.
PB Elsevier
SN 0272-8842
YR 2024
FD 2024-12
LK https://hdl.handle.net/20.500.14352/125164
UL https://hdl.handle.net/20.500.14352/125164
LA eng
NO Younes Sadin, Rainer Schmidt, Ehsan Taheri-Nassaj, Amin Yourdkhani, Marta María Barrios-González, Jesús Prado-Gonjal, Sami Myllymäki, Heli Jantunen, Hadi Barzegar-Bafrooei, Microwave dielectric properties of LiM(PO3)3 (M = Mg2+, Zn2+) ceramics, Ceramics International, Volume 50, Issue 24, Part B, 2024, Pages 53655-53665, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2024.10.216.
NO © 2023 Elsevier Ltd. All rights reserved.
DS Docta Complutense
RD 21 ene 2026