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To meet the demands for miniaturization and higher operating frequencies in self biased circulators, improving the performance of hexaferrite materials is essential. In this work, La–Zn–Sc co substituted M type barium ferrites (La0.3Ba0.7Fe10.9-xZn0.3ScxO19) were prepared via solid state reaction. X ray diffraction (XRD) confirmed the formation of a single phase magnetoplumbite structure in all samples. Scanning electron microscopy (SEM) images revealed that the ferrite particles exhibit hexagonal platelet morphology and are aligned along the c axis after wet pressing and sintering under a magnetic field. Lattice parameters and particle sizes were calculated from the XRD and SEM data. Magnetic measurements indicate that the Sc–La–Zn substituted M type ferrites exhibit high saturation magnetization (Ms > 60 emu/g) while allowing the magnetocrystalline anisotropy field to be tuned between 7–10 kOe via controlled Sc doping. Moreover, a narrow ferromagnetic resonance linewidth (ΔH ≈ 260 Oe) was achieved. Based on the measured magnetic parameters, three self biased circulators operating at center frequencies from 25 GHz to 35 GHz were designed and simulated using HFSS, demonstrating a broad frequency tuning range. The circulators exhibit a minimum insertion loss below 0.5 dB and a maximum isolation bandwidth (isolation >20 dB) of up to 4.4 GHz. This study highlights the potential of these materials for self biased circulators covering different frequency bands.
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[1] Peral E, Im E, Wye L, Lee S, Tanelli S, Rahmat-Samii Y, Horst S, Hoffman J, Yun S H, Imken T, Hawkins D 2018 Proc. IEEE 106 404
[2] Zhang Q, Fan H, Qin Y, Zhou Y 2025 Sensors 25 4616
[3] Song, R., Wang, W., & Yu, W 2024 Sensors 24 5978.
[4] Patel V, Mittapally V, Nagaraju D, Madhukar H 2021 Proc. Int. Conf. Control Autom. Power Signal Process. 1
[5] Elliott J R 2020 Surv. Geophys. 41 1323
[6] Saraereh O A 2022 Comput. Syst. Sci. Eng. 43 413
[7] Singh C, Sharma C, Tripathi S, Sharma M, Agrawal A 2023 Wirel. Pers. Commun. 133 1547
[8] Harris V G, Sokolov A S 2018 J. Supercond. Nov. Magn. 32 97
[9] Liu Q, Li H, You X, Li C, Tan X, Wu C, Liang T, Lai Y 2024 J. Alloys Compd. 1008 176760
[10] Li X Y, Hou Y H, Chen X, Huang Y L, Li W, Tao X M 2025 Acta Physica Sinica 74 067501-1 (in Chinese) [李昕语， 侯育花， 陈璇， 黄有林， 李伟， 陶小马 2025 物理学报 74 067501-1]
[11] Yang J L, Liu K W, Shen D Z 2017 Chin. Phys. B 26 047308
[12] Jotania R 2014 AIP Conf. Proc. 1621 3
[13] Li Y, Liu Q, Qi M, Chen Y 2022 J. Electron. Mater. 52 523
[14] Lu S F, Liu Y, Yin Q, Chen J, Wu J, Li J, Zhang P, Chen Z C 2023 SSRN Electron. J.
[15] Jiang X, Jia H, Wu C, Yu Z, Luo H, Guo R, Li Z, Jiang Y, Nie J, Lan Z, Sun K 2020 J. Alloys Compd. 835 155202
[16] Peng L, Hu Y B, Guo C, Li L Z, Wang R, Hu Y, Tu X Q 2015 Chin. Phys. Lett. 32 017502
[17] Liu Q, Wu C, Wang Y, You X, Li J, Liu Y, Zhang H 2019 J. Magn. Magn. Mater. 475 223
[18] Zeina N, How H, Vittoria C, West R 1992 IEEE Trans. Magn. 28 3219
[19] Pope C G 1997 J. Chem. Educ. 74 129
[20] Liu X, Zhong W, Yang S, Yu Z, Gu B, Du Y 2002 J. Magn. Magn. Mater. 238 207
[21] Yang Y, Shao J, Wang F, Liu X, Huang D 2017 Appl. Phys. A 123 316
[22] Chen Y, Nedoroscik M J, Geiler A L, Vittoria C, Harris V G 2008 J. Am. Ceram. Soc. 91 2952
[23] Rezlescu N, Rezlescu E, Popa P D, Doroftei C, Ignat M 2014 Appl. Catal. B-Environ. 158-159 70
[24] Achari K M R, Ramachander R B 1987 Bull. Mater. Sci. 9 97
[25] Dawley J T, Clem P G 2002 Appl. Phys. Lett. 81 3028
[26] Erokhin S, Berkov D 2020 Phys. Status Solidi B 257 2000290
[27] Liu J, Zeng Y, Zhang X, Zhang M 2015 J. Magn. Magn. Mater. 382 188
[28] Hessien M M, El-Bagoury N, Mahmoud M H H, Alsawat M, Alanazi A K, Rashad M M 2020 J. Magn. Magn. Mater. 498 166187
[29] Mahmood S H, Dushaq G H, Bsoul I, et al 2014 J. Appl. Math. Phys. 02 77
[30] Manglam M K, Kumari S, Pradhan L K, Kumar S, Kar M 2020 Physica B 588 412200
[31] Kumar R K S, Manglam M K, Supriya S, Satpal H K 2019 J. Magn. Magn. Mater. 473 312
[32] Bosma H 1964 IEEE Trans. Microw. Theory Tech. 12 61
[33] Wu C J 2018 Ph. D. Dissertation (Chengdu: University of Electronic Science and Technology of China) (in Chinese) [邬传建 2018 博士学位论文 (成都: 电子科技大学)]
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