Influence of Li2CO3 and ZnO Nanoparticle on Microstructure and Magnetic Properties of Low-Temperature Sintering LiZnTiBi Ferrites for High-Frequency Applications
International Journal of Materials Science and Applications
Volume 8, Issue 3, May 2019, Pages: 35-39
Received: May 28, 2019; Published: Jul. 29, 2019
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Authors
Fang Xu, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Yulong Liao, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
Huaiwu Zhang, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China
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Abstract
LiZnTi ferrite ceramics with high saturation flux density (Bs), large remanence ratio (Br/Bs) and high saturation magnetization (4πMs) is a vital material for high frequency devices. In the present work, we prepared uniform and compact LiZnTiBi ferrite with large average grain size (>30μm) at 900°C. Firstly, the hybrid materials, including Li2CO3, ZnO, TiO2, Bi2O3 and Fe2O3, were pre-sintered at 850°C at O2 atmosphere. Next, composite additives composited of Li2CO3 and ZnO nanoparticles were added to control grain growth. The influences of the Li2CO3 and nano-ZnO (LZ) on the microstructure and magnetic properties of LiZnTiBi ferrite, especially for grain size, have been analyzed. SEM images demonstrated that moderate LZ additives (x=0.75 wt%) can prevent abnormal grains. Also, the ferrite samples possess compact microstructures. The phenomenon indicated that the LZ additive is a good sintering aid for low-temperature sintering LiZnTiBi ferrites. XRD patterns showed that all samples have a pure spinel phase. The magnetic properties, including Bs, Br/Bs and 4πMs, have weak change when LZ additives were added. However, due to smaller average grain size, the coercivity (Hc) gradually increased. Thus, a low-temperature sintering LiZnTiBi ferrite with high saturation flux density (Bs=311.10 mT), large remanence ratio (Br/Bs=0.86), low coercivity (Hc=244.6 A/m) and high saturation magnetization (Ms=75.40) was obtained when 1.00 wt% LZ additive was added. More important, the LiZnTiBi ferrite possessed uniform average grain. Such a sintering method (i.e., adding composite additive to control abnormal grain) should also promote synthesis of other advanced ceramics for practical applications.
Keywords
LiZnTiBi Ferrite, Low Temperature Sintering, Li2CO3, ZnO Nanoparticle, Microstructure, Magnetic Properties
To cite this article
Fang Xu, Yulong Liao, Huaiwu Zhang, Influence of Li2CO3 and ZnO Nanoparticle on Microstructure and Magnetic Properties of Low-Temperature Sintering LiZnTiBi Ferrites for High-Frequency Applications, International Journal of Materials Science and Applications. Vol. 8, No. 3, 2019, pp. 35-39. doi: 10.11648/j.ijmsa.20190803.11
References
[1]
A. Shamim, J. R. Bray, N. Hojjat, and L. Roy, “Ferrite LTCC-Based antennas for tunable SoP applications,” IEEE Trans. Comp. Pack. Man., 2011, vol. 1, pp. 999-1006.
[2]
E. Arabi, F. A. Ghaffar, and A. Shamim, “Tunable bandpass filter based on partially magnetized ferrite LTCC with embedded windings for SoP applications,” IEEE Micro. Wire. Comp. Lett., 2015, vol. 25, pp. 16-18.
[3]
F. A. Ghaffar and A. Shamim, “A partially magnetized ferrite LTCC-based SIW phase shifter for phased array applications,” IEEE Trans. Magn., 2015, vol. 51, pp. 271–350.
[4]
J. R. Bray, K. T. Kautio, and L. Roy, “Characterization of an experimental ferrite LTCC tape system for microwave and millimeter-wave applications,” IEEE Trans. Adv. Pack., vol. 27, pp. 558-565.
[5]
S. C. Yang, D. Vincent, J. R. Bray, and L. Roy, “Study of a ferrite LTCC multifunctional circulator with integrated winding,” IEEE Trans. Comp. Pack. Man., 2015, vol. 5, pp. 879-886.
[6]
E. Brookner, “Phased arrays and radars-Past, present and future,” Microwave J., 2006, vol. 49, pp. 24−46.
[7]
V. G. Harris, “Modern Microwave Ferrites,” IEEE Trans. Magn. 2012, vol. 48, pp. 1075−1104.
[8]
F. Xu, Y. L. Liao, D. N. Zhang, T. C. Zhou, J. Lie, G. W. Gan, H. W. Zhang, “Synthesis of Highly Uniform and Compact Lithium Zinc Ferrite Ceramics via an Efficient Low Temperature Approach,” Inorg. Chem., 2017, vol. 56, pp. 4512-4520.
[9]
F. Xie, L. Jia, Z. Zheng, and H. Zhang, “Influences of Li2O-B2O3-SiO2 Glass Addition on Microstructural and Magnetic Properties of LiZnTi Ferrites,” IEEE Trans. Magn., 2015, vol. 51, pp. 2801104.
[10]
T. C. Zhou, H. W. Zhang, L. J. Jia, J. Lie, Y. L. Liao, L. C. Jin, and H. Su, “Grain growth, densification, and gyromagnetic properties of LiZnTi ferrites with H3BO3-Bi2O3-SiO2-ZnO glass addition,” J. Appl. Phys., 2014, vol. 115, pp. 17A511.
[11]
T. C. Zhou, H. W. Zhang, L. J. Jia, Y. L. Liao, Z. Y. Zhong, F. M. Bai, H. Su, J. Lie, L. C. Jin, and C. Liu, “Enhanced ferromagnetic properties of low temperature sintering LiZnTi ferrites with Li2O-B2O3-SiO2-CaO-Al2O3 glass addition,” J. Alloy. Compd., 2015, vol. 620, pp. 421-426.
[12]
F. Xu, H. W. Zhang, F. Xie, Y. L. Liao, Y. X. Li, J. Lie, L. C. Jin, Y. Yang, G. W. Gan, G. Wang, and Q. Zhao, “Investigation of grain boundary diffusion and grain growth of lithium zinc ferrites with low activation energy,” J Am Ceram Soc., 2018, vol. 101, pp. 5037-5045.
[13]
D. Zhou, L. X. Pang, D. W. Wang, C. Li, B. B. Jin, and I. M. Reaney, “High permittivity and low loss microwave dielectrics suitable for 5G resonators and low temperature co-fired ceramic architecture,” J. Mater. Chem. C, 2017, vol. 5, pp. 10094-10098.
[14]
M. T. Sebastian, and H. Jantunen, “Low loss dielectric materials for LTCC applications: a review,” Inter. Mater. Rev. 2008, vol. 53, pp. 57-90.
[15]
S. Zhang, H. Su, H. W. Zhang, Y. L. Jing, and X. L. Tang, “Microwave dielectric properties of CaWO4-Li2TiO3 ceramics added with LBSCA glass for LTCC applications,” Ceram. Int., 2016, vol. 42, pp. 15242-15246.
[16]
Y. Wang, Y. L. Liu, J. Li, Q. Liu, H. W. Zhang, and V. G. Harris, “LTCC processed CoTi substituted M-type barium ferrite composite with BBSZ glass powder additives for microwave device applications,” AIP Adv., 2016, vol. 6, pp. 056410.
[17]
K. Lee, and S. Kang, “CuO/V2O5-Codoped Bi3/2ZnNb3/2O7 (BZN) Ceramic for Embedded Capacitor Layer in Integrated LTCC Modules,” J. Electron. Mater., 2016, vol. 45, pp. 2987-2995.
[18]
F. Xu, D. N. Zhang, G. Wang, H. W. Zhang, Y. Yang, Y. L. Liao, L. C. Jin, Y. H. Rao, J. Lie, F. Xie, G. W. Gan, “Influence of LZN nanoparticles on microstructure and magnetic properties of bi-substituted LiZnTi low-sintering temperature ferrites,” Ceram. Int., 2019, vol. 45, pp. 1946-1949.
[19]
Y. L. Liao, H. Wang, D. N. Zhang, Y. X. Li, H. Su, J. Li, F. Xu, X. Y. Wang, H. W. Zhang, “Magnetic properties of low temperature sintered LiZn ferrites by using Bi2O3-Li2CO3-CaO-SnO2-B2O3 glass as sintering agent, ” Ceram. Int. 2018, vol. 44, pp. 5513-5517.
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