Abstract
One of the challenges in the design of microwave absorbers lies in tunable amplitude of dynamic permeability. In this work, we demonstrate that electric-field-induced magnetoelastic anisotropy in nano-granular film FeCoB-SiO2/PMN-PT (011) composites can be used to tune the amplitude of ferromagnetic resonance peak at room temperature. The FeCoB magnetic particles are separated from each other by SiO2 insulating matrix and present slightly different in-plane anisotropy fields. As a result, multi-resonances appear in the imaginary permeability (μ″) curve and mixed together to form a broadband absorption peak. The amplitude of the resonance peak could be modulated by external electric field from 118 to 266.
Highlights
With the rapid development of electronic industries, the electromagnetic interference problem has become increasingly important and provides challenges for material researchers and radio frequency (RF) design engineers [1]
Magnetic granular films consisting of nanometer-sized ferromagnetic metallic particles (Fe, Co, Ni, and their alloys) randomly distributed in dielectric
The artificial two-phase systems consisting of ferromagnetic (FM) and ferroelectric (FE) materials have been extensively studied due to attractive potential applications
Summary
With the rapid development of electronic industries, the electromagnetic interference problem has become increasingly important and provides challenges for material researchers and radio frequency (RF) design engineers [1]. In order to reduce the undesirable electromagnetic radiation, nano-structural magnetic films have been extensively studied as one of the magnetic shielding materials. The relatively large complex permittivity (exceeds 104) of these kinds of materials is difficult to satisfy the impedance-matching condition in the design method of electromagnetic wave absorption [4]. Magnetic granular films consisting of nanometer-sized ferromagnetic metallic particles (Fe, Co, Ni, and their alloys) randomly distributed in dielectric. The artificial two-phase systems consisting of ferromagnetic (FM) and ferroelectric (FE) materials have been extensively studied due to attractive potential applications. This heterostructure permits the control of magnetism with the converse magnetoelectric (ME) effect [9, 10]. The amplitude of ferromagnetic resonance peak was tuned from 118 to
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
