Magnetic skyrmions with a well-defined spin texture have shown unprecedented potential for various spintronic applications owning to their topologically non-trivial and quasiparticle properties. To put into practical technology, efficient manipulation, especially the inhibition of skyrmion Hall effect (SkHE) has been intensively pursued. In spite recent progress made on reducing SkHE in several substituted systems, such as ferrimagnets synthetic antiferromagnets, organized creation current...

The 5G communication system has experienced a substantial expansion of the spectrum, which poses higher requirements to radio frequency (RF) filters in enhancing their operating frequencies and bandwidths. To this end, work focused on solving filtering scheme for challenging n77 n78 bands successfully implemented corresponding spurious-free surface acoustic wave (SAW) exploiting large-coupling shear horizontal (SH) modes based X-cut LiNbO3 (LN)/silicon carbide (SiC) heterostructure. Here, we...

The fast development of the fifth-generation (5G) wireless systems and substantial growth data usage have imposed stringent requirements for high-frequency wideband radio frequency devices. Here, it is reported on a longitudinal leaky surface acoustic wave (LLSAW) mode resonator with large electromechanical coupling factor (kt2), high operating frequency, efficient spurious suppression. Through systematical finite element method simulations, available design spaces such as supporting...

Beta-gallium oxide (β-Ga

There is less "clearance" for the antenna full-screen mobile phones, which a higher challenge to miniaturization in radio frequency. Magnetoelectric (ME) stands out as promising solution fifth generation (5G) wireless communication technology its superior capability compared with conventional electrical antennas. Although many structures of ME antennas have been proposed, their resonant frequency stay below 3 GHz, cannot satisfy 5G communication. Here we report magnetoelectric 445 nm AlN...

Improving frequency and bandwidth is the essential path for surface acoustic wave (SAW) filter to keep its leadership in 5G or sub-6G system. In this work, we present high longitudinal leaky SAW (LLSAW) devices based on 128° <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${Y}$ </tex-math></inline-formula> -90° notation="LaTeX">${X}$ LiNbO3/160° Quartz structure, whose parameters were optimized through...

Surface acoustic waves (SAW) provide a promising platform to study spin-phonon coupling, which can be achieved by SAW-driven ferromagnetic resonance (FMR) for efficient manipulation of spin. Although the magneto-elastic effective field model has great success in describing FMR, magnitude acting on magnetization induced SAW still remains hard access. Here, integrating stripes with devices, direct-current detection FMR based electrical rectification is reported. By analyzing rectified voltage,...

As a promising material alternative, lithium niobate (LN)-based heterostructure has recently received growing recognition in the field of radio frequency (RF) wideband filtering. However, corresponding surface acoustic wave (SAW) devices still encounter spurious transverse modes interference and deficient thermal stability, which hinder their capability to process already crowded spectrums. This work presents spurious-free near-zero drift shear horizontal SAW (SH-SAW) resonators utilizing an...

Compensated synthetic antiferromagnets (SAFs) stand out as promising candidates to explore various spintronic applications, benefitting from high precession frequency and negligible stray field. High-frequency antiferromagnetic resonance in SAFs, especially the optic mode (OM), is highly desired attain fast operation speed devices. SAFs exhibit ferromagnetic configurations above saturation field; however that case, intensity of OM theoretically zero hard be detected well-established...

Abstract Magnetoelectric (ME) antennas hold the potential for significantly advancing miniaturization in radio frequency devices due to their compact size. However, critical hurdles still remain ME including low radiation efficiency and narrow bandwidth, which prevent them from seeing widespread use. Here, by sweeping magnetic field reach a resonant coupling, significant enhancement 70.95 ± 6.4% broad bandwidth antenna with 80 MHz is achieved as well far‐field patterns are changed compared...

This research aims to overcome the tradeoff between bandwidth, temperature stability of frequency, and loss in surface acoustic wave filters. A novel multilayered structure, SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Cu-grating/ <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$15^{\circ }~{Y}$ </tex-math></inline-formula> - notation="LaTeX">${X}$ LiNbO...

We demonstrate surface acoustic wave (SAW) filter suitable for 5G communication through the construction of LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> film bonded on insulator (LNOI) platform 32° Y-X LN/SiO xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> /poly-Si/Si. Through finite element method, energy confinement is verified and a spurious mode mitigation electrode thickness modulation proposed. Resonator fabricated LNOI...

This work presents a novel LiNbO <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathbf{3}}$</tex-math> </inline-formula> /SiO notation="LaTeX">$_{\mathbf{2}}$</tex-math> /SiC piezoelectric-on-insulator (POI) platform for monolithic synthesis of high-performance, multiband, and compact surface acoustic wave (SAW) filters on single die. By means the frequency tunability SAW technology, simultaneous...

Abstract Surface acoustic wave (SAW) filters are at the center of radio frequency module in mobile terminals. With increase SAW and miniaturization devices, heat generation becomes prominent providing a potential platform for thermal energy harvesting. Here ferromagnetic materials embedded into delay lines to demonstrate that can be harvested generate robust transverse electrical signals via anomalous Nernst effect, which comparable with Hall when an electric current is intensively applied....

The 5G or emerging sub-6G systems have turned to millimeter wave (mmw) frequency range with large bandwidth, so it is urgent develop suitable filter meet the spectrum requirements. In order make acoustic platform still competitive in future communication, first-order antisymmetric (A <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf> ) lamb mode resonators were constructed on thin 128° Y-X LiNbO...

Featuring a pronounced leakage suppression of acoustic energy, the construction multilayer stacks offers an effective avenue for surface wave (SAW) devices to remain competitive in fifth-generation (5G) applications. While target modes experience significant enhancement due waveguide effect, transverse spurious responses are also confined and amplified, leading severe in-band ripples limited rejection corresponding filter. Guided by slowness dispersion analysis, commercially available...

Lithium-niobate-on-insulator (LNOI) platform has emerged as a promising solution for fabricating wideband and low-loss surface acoustic wave (SAW) filters. However, it simultaneously excites higher order modes, causing out-of-band (OoB) spurious responses. In this work, the elimination condition modes in LiNbO3 (LN)/SiO2/poly-Si/Si structure was summarized from analyzing coupling mechanism between velocities of shear bulk waves ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

With the advancement of radio frequency (RF) technology, exponential increase in transmitted data during 5G era imposes elevated demands on bandwidth surface acoustic wave (SAW) filters. Recently, lithium niobate insulator (LNOI) platform has emerged as a promising solution for producing wideband SAW filters communication. In this study, we have investigated propagation characteristics LNOI and explored design fabrication various high-performance devices platform. The implemented resonators...

To meet the demands of highly integrated and miniaturized radio frequency front-end (RFFE) modules, multi-passband filters which support multi-channel compounding come to foreground. In this work, we proposed a new design dual-passband surface acoustic wave (SAW) filter based on 32°YX-LiNbO3 (LN)/SiO2/SiC multilayered structure. The is standalone ladder topology comprises dual-mode resonators, in shear horizontal (SH) mode high-order SH are simultaneously excited through electrode thickness...

Piezoelectric heterostructures with piezoelectric single crystal bonded to handling substrate have emerged as a notable material platform for radio frequency filtering applications. However, spurious transverse modes resulting from the waveguide effect in corresponding surface acoustic wave filters curtail advancement of 5G data transmission. In this work, <tex xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This paper reports on the demonstration of high-frequency and spurious-free longitudinal leaky surface acoustic wave (LLSAW) filters utilizing a 32° Y-45° X LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> /SiO xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> /SiC heterostructure. The efficient spurious suppression in wide frequency range is attained through optimizing critical design parameters such as electrode selection,...