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Efficient electron beam acceleration requires precise synchronization between beam dynamics and RF phase–amplitude modulation, which demands fast and reliable tuning systems. Conventional ferrite or mechanical regulators are limited by slow response times, prompting interest in ferroelectric materials for high-power RF phase shifters and tuners. In this work, self-propagating high-temperature synthesis (SHS) was employed to fabricate Mn-doped 0.6BiFeO₃–0.4BaTiO₃ (BF–BT) ceramics. Optimized milling and sintering conditions yielded dense ceramics with favorable dielectric and magnetic properties. Thin BF–BT films deposited by pulsed laser deposition (PLD) from BF-BT ceramic targets were integrated into bulk acoustic wave solidly mounted resonators (BAW-SMRs). Structural, surface, and electrical characterizations, including XRD, 3D optical profilometry, and dielectric–magnetic measurements, confirmed uniform nanoscale roughness, conformal electrode coverage, and dual tunability under external fields. These results highlight the potential of Mn-doped BF–BT compositions for next-generation fast-switching RF components in particle accelerator technologies.
Footnotes
N.W. Martirosyan, T.V. Vandunts et al., “Preparation and Characterization of BTO-BFO Multiferroic Ceramics as Electrical Controllable Fast Phase Shifting Component”, Proceedings of IPAC22, Bangkok, Thailand, 2022, ID: 2559 - TUPOPT069
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