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Broadband ferromagnetic resonance is a useful technique to determine the magnetic anisotropy and study the magnetization dynamics of magnetic thin films. We report a spring-loaded sample loading manipulator for reliable sample mounting and rotation. The manipulator enables maximum signal, enhances system stability, and is particularly useful for fully automated in-plane-field angle-resolved measurements. This angle-resolved broadband ferromagnetic resonance apparatus provides a viable method to study anisotropic damping and weak magnetic anisotropies, both vital for fundamental research and applications.
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http://dx.doi.org/10.1063/1.5113773 | DOI Listing |
Nano Lett
September 2025
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States.
Circularly polarized light (CPL) imaging and detection offer powerful capabilities for anti-counterfeiting, quantum communication, and material analysis. However, their practical implementation is hindered by challenges in achieving broadband performance and scalable integration into compact and flexible devices. Chiral multiferroic materials, chirality-controlled magnetoelectrics, are especially promising due to their unique coupling between CPL-guided electric and spin properties.
View Article and Find Full Text PDFACS Omega
July 2025
Chemistry Department, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada.
Current-induced magnetoelectric (ME) effect offers the potential for broadband, low-power tunable microwave devices. While yttrium iron garnet (YIG) is the most used ferrite due to its superior magnetic properties, its high-quality dielectric properties hinder its potential tuning with an electric current. To increase YIG's conductivity, we investigated Zn-doped YIG nanoparticles and nanocomposites (YFe Fe Zn O) synthesized using the sol-gel method within a broad concentration range of dopants (0 < < 1.
View Article and Find Full Text PDFPhys Rev Lett
June 2025
Lawrence Berkeley National Laboratory, Berkeley, Theory Group, California 94720, USA.
When a gravitational wave (GW) passes through a dc magnetic field, it couples to the conducting wires carrying the currents which generate the magnetic field, causing them to oscillate at the GW frequency. The oscillating currents then generate an ac component through which the GW can be detected-thus forming a resonant mass detector or a nagnetic Weber bar. We quantify this claim and demonstrate that magnets can have exceptional sensitivity to GWs over a frequency range demarcated by the mechanical and electromagnetic resonant frequencies of the system; indeed, we outline why a magnetic readout strategy can be considered an optimal Weber bar design.
View Article and Find Full Text PDFSci Adv
June 2025
Department of Physics, The Ohio State University, Columbus, OH 43210, USA.
Optical detection of magnetic resonance using quantum spin sensors (QSSs) provides a spatially local and sensitive technique to probe spin dynamics in magnets. However, its utility as a probe of antiferromagnetic resonance (AFMR) remains an open question. We report the experimental demonstration of optically detected AFMR in layered van der Waals antiferromagnets (AFM) up to frequencies of 24 gigahertz.
View Article and Find Full Text PDFMicromachines (Basel)
June 2025
College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024, China.
: The aim of this study is to achieve automated energy capture and charging for the ADXL355 accelerometer, enhance the vibration energy collection efficiency, and widen the energy trapping frequency band of a system in a working environment for bridge health state detection. : A vibration energy harvester based on a magnetic coupling cantilever beam in an orthogonal direction was proposed. The harvester works by adjusting the angle and magnetic spacing between the two cantilever-beam piezoelectric oscillators, enabling the oscillators to produce large-scale and stable vibrations when excited by an external broadband vibration source.
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