Wei Jin, Shiyue You, Zhi Qin, Liang Ma, Dengcai Shi, Jie Shen, Jing Zhou and Wen Chen*,
{"title":"构建磁梯度界面增强PZT MFC/ metglass磁电复合材料的自偏置磁发射强度","authors":"Wei Jin, Shiyue You, Zhi Qin, Liang Ma, Dengcai Shi, Jie Shen, Jing Zhou and Wen Chen*, ","doi":"10.1021/acsaelm.5c00924","DOIUrl":null,"url":null,"abstract":"<p >Magnetoelectric (ME) composites have gained significant attention as promising candidates for miniaturizing very-low-frequency (VLF) communication systems. Nevertheless, the inherent limitation of these composites lies in their suboptimal magnetic emission intensity under zero-bias magnetic field conditions. In this study, an innovative magneto-gradient ME composite was designed to achieve enhanced magnetic emission performance without external magnetic bias. The designed composite features a sandwich-like structure comprising a Pb(Zr, Ti)O<sub>3</sub> macro-fiber composite (PZT MFC) piezoelectric layer, an epoxy adhesive matrix uniformly filled with Terfenol-D magnetic particles, and a FeBSi (Metglas) magnetostrictive plate. The strategic incorporation of Terfenol-D particles establishes a controlled magnetic gradient between the Metglas layer and the adhesive interlayer, thereby inducing an intrinsic bias magnetic field. This self-bias mechanism enables a significant enhancement of magnetic emission performance without increasing the size of the ME antenna. Furthermore, the Terfenol-D-filled adhesive layer serves dual functions by simultaneously optimizing the acoustic impedance matching between the PZT-MFC actuator and Metglas resonator, thereby improving strain energy transfer efficiency across the interface. The experimental results show that ME composite with 40 vol % Terfenol-D achieves a magnetic emission intensity of 1 nT at 0.8 m transmission distance, tripling the performance of conventional unfilled counterparts. The optimized ME antenna demonstrates a successful amplitude-shift keying (ASK)-modulated data transmission with enhanced signal integrity. This magnetic-particle-filling approach presents a facile yet effective method for amplifying the ME response through built-in field engineering while providing a viable pathway toward practical implementation of compact VLF communication systems.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 14","pages":"6601–6609"},"PeriodicalIF":4.7000,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Self-Bias Magnetic Emission Intensity in PZT MFC/Metglas Magnetoelectric Composites by Constructing a Magneto-Gradient Interface\",\"authors\":\"Wei Jin, Shiyue You, Zhi Qin, Liang Ma, Dengcai Shi, Jie Shen, Jing Zhou and Wen Chen*, \",\"doi\":\"10.1021/acsaelm.5c00924\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Magnetoelectric (ME) composites have gained significant attention as promising candidates for miniaturizing very-low-frequency (VLF) communication systems. Nevertheless, the inherent limitation of these composites lies in their suboptimal magnetic emission intensity under zero-bias magnetic field conditions. In this study, an innovative magneto-gradient ME composite was designed to achieve enhanced magnetic emission performance without external magnetic bias. The designed composite features a sandwich-like structure comprising a Pb(Zr, Ti)O<sub>3</sub> macro-fiber composite (PZT MFC) piezoelectric layer, an epoxy adhesive matrix uniformly filled with Terfenol-D magnetic particles, and a FeBSi (Metglas) magnetostrictive plate. The strategic incorporation of Terfenol-D particles establishes a controlled magnetic gradient between the Metglas layer and the adhesive interlayer, thereby inducing an intrinsic bias magnetic field. This self-bias mechanism enables a significant enhancement of magnetic emission performance without increasing the size of the ME antenna. Furthermore, the Terfenol-D-filled adhesive layer serves dual functions by simultaneously optimizing the acoustic impedance matching between the PZT-MFC actuator and Metglas resonator, thereby improving strain energy transfer efficiency across the interface. The experimental results show that ME composite with 40 vol % Terfenol-D achieves a magnetic emission intensity of 1 nT at 0.8 m transmission distance, tripling the performance of conventional unfilled counterparts. The optimized ME antenna demonstrates a successful amplitude-shift keying (ASK)-modulated data transmission with enhanced signal integrity. 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Enhanced Self-Bias Magnetic Emission Intensity in PZT MFC/Metglas Magnetoelectric Composites by Constructing a Magneto-Gradient Interface
Magnetoelectric (ME) composites have gained significant attention as promising candidates for miniaturizing very-low-frequency (VLF) communication systems. Nevertheless, the inherent limitation of these composites lies in their suboptimal magnetic emission intensity under zero-bias magnetic field conditions. In this study, an innovative magneto-gradient ME composite was designed to achieve enhanced magnetic emission performance without external magnetic bias. The designed composite features a sandwich-like structure comprising a Pb(Zr, Ti)O3 macro-fiber composite (PZT MFC) piezoelectric layer, an epoxy adhesive matrix uniformly filled with Terfenol-D magnetic particles, and a FeBSi (Metglas) magnetostrictive plate. The strategic incorporation of Terfenol-D particles establishes a controlled magnetic gradient between the Metglas layer and the adhesive interlayer, thereby inducing an intrinsic bias magnetic field. This self-bias mechanism enables a significant enhancement of magnetic emission performance without increasing the size of the ME antenna. Furthermore, the Terfenol-D-filled adhesive layer serves dual functions by simultaneously optimizing the acoustic impedance matching between the PZT-MFC actuator and Metglas resonator, thereby improving strain energy transfer efficiency across the interface. The experimental results show that ME composite with 40 vol % Terfenol-D achieves a magnetic emission intensity of 1 nT at 0.8 m transmission distance, tripling the performance of conventional unfilled counterparts. The optimized ME antenna demonstrates a successful amplitude-shift keying (ASK)-modulated data transmission with enhanced signal integrity. This magnetic-particle-filling approach presents a facile yet effective method for amplifying the ME response through built-in field engineering while providing a viable pathway toward practical implementation of compact VLF communication systems.
期刊介绍:
ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric.
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