Soft Magnetism and Microwave Properties of FeCoSiB Ferromagnetic Alloys Grown on AlN and AlScN Thin Films

IF 1.1 4区物理与天体物理 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Magnetics Letters Pub Date : 2025-01-27 DOI:10.1109/LMAG.2025.3535310

Meng Zhao;Xianfeng Liang;Yuxi Wang;Tao Wu;Jingen Wu;Jinghong Guo;Zhongqiang Hu;Ming Liu

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引用次数: 0

Abstract

Thin-film magneto-electric composites based on aluminum nitride (AIN) and Sc-doped AlN exhibit great potential for applications in magneto-electric devices. In this letter, we report soft magnetism and microwave properties in FeCoSiB ferromagnetic alloys grown on AlN and AlScN thin films. According to the hysteresis loop, the coercive fields for FeCoSiB/AlN/Mo/Si and FeCoSiB/AlScN/Mo/Si are 43 and 107 Oe, respectively. The influence of interfacial state on magnetic damping is investigated by measuring the magnetic dynamic properties. Scanning electron microscope images show that AlScN film has a larger grain size and rougher surface than that of AlN. The effective magnetization and damping factors are obtained from the ferromagnetic resonance spectroscopy. The damping factor of the magneto-electric heterojunction on AlN/Mo/Si is an order of magnitude higher than that on Si, indicating the interfacial conditions of thin film stacks affect the magnetic dynamic properties. Our findings indicate that the growth quality of piezoelectric materials has a significant impact on magneto-electric films with low-loss tangents at radio-frequency (RF)/microwave frequencies. This work is of practical importance for developing future RF/microwave magneto-electric devices.

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来源期刊

IEEE Magnetics Letters PHYSICS, APPLIED-

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IEEE Magnetics Letters is a peer-reviewed, archival journal covering the physics and engineering of magnetism, magnetic materials, applied magnetics, design and application of magnetic devices, bio-magnetics, magneto-electronics, and spin electronics. IEEE Magnetics Letters publishes short, scholarly articles of substantial current interest. IEEE Magnetics Letters is a hybrid Open Access (OA) journal. For a fee, authors have the option making their articles freely available to all, including non-subscribers. OA articles are identified as Open Access.