Akademik Veri Yönetim Sistemi
Journal of Magnetism and Magnetic Materials, cilt.635, 2025 (SCI-Expanded, Scopus)
In this study, we report for the first time the fabrication and characterization of a Vacodur49/PZT/Vacodur49 trilayer magnetoelectric (ME) sensor. Vacodur49, a cobalt–iron–vanadium alloy, was employed as the magnetostrictive component due to its high saturation magnetization and significant magnetostriction (70 ppm). Structural and magnetic analyses confirmed the crystalline quality, magnetic softness, and favourable anisotropy of the alloy. The fabricated device exhibited a strong resonance-enhanced ME coupling, achieving a maximum ME coefficient of 361 V·cm−1·Oe−1 under an AC magnetic field of 0.047 Oe at ∼49.2 kHz. The sensor demonstrated ultra-high sensitivity with a minimum detectable AC magnetic field of 100 pT, excellent linearity, and fast response. Compared to many other magnetic materials, Vacodur49 provides superior mechanical robustness and enables thicker magnetostrictive layers. These results establish Vacodur49 as a novel and promising material platform for next-generation ME sensors, with potential applications in biomedical diagnostics, ultra-low-field detection, and precision magnetic sensing technologies.