The technology involves a new type of compact device based on magneto-optics in a fiber micro modulator. This type of modulator allows the user to inter manipulate and control the propagation of the incoming light. The operation mechanism uses external magnetic field to manipulate Fe micro particle in order to cause modulation of an optical signal that propagates along an optical waveguide. Thi...

The equation of motion of magnetization is strongly nonlinear, yielding a series of interesting phenomena. For instance it is well known that in ferromagnetic resonance of extended films, where one uses a microwave field to pump the spin system at a particular frequency, spin-wave (SW) instabilities quickly develop as the excitation power is increased, preventing to achieve large angle of unifo...

We report an experimental study on magneto-optical (MO) Kerr effects of yttrium-iron garnet (YIG) thin films incorporating Au nanoparticles. The polar MO Kerr spectra in the wavelength between 400 and 800 nm show that, by incorporating the Au nanoparticles, Kerr rotation angles become negative values in the region, where the localized surface plasmon polariton (SPP) resonance of the Au nanopart...

As the use of pesticides in agriculture is increasing at an alarming rate, food contamination by pesticide residues becoming a huge global problem. It essential to develop sensitive and user-friendly sensor device quantify trace levels herbicide samples. Herein, we report electrocatalyst made up yttrium iron garnet (Y3Fe5O12; YIG) graphitic carbon nitride (GCN) attain picomolar-level detection ...

We demonstrate the anomalous Hall effect (AHE) in single-layer graphene exchange coupled to an atomically flat yttrium iron garnet (YIG) ferromagnetic thin film. The anomalous Hall conductance has magnitude of ∼0.09(2e(2)/h) at low temperatures and is measurable up to ∼300  K. Our observations indicate not only proximity-induced ferromagnetism in graphene/YIG with a large exchange interaction, ...

Y3Fe5O12 (YIG) thin films are typically grown on Gd3Ga5O12 (GGG) substrates; however, such YIG suffer from significantly increased damping at low temperatures due to the interfacial exchange coupling between magnetization and lossy Gd3+ moments in GGG. To overcome this problem, we grow high-quality epitaxial YIG(35 nm) a diamagnetic Y3Sc2.5Al2.5O12 (YSAG) bilayer GGG, where YSAG buffer layer el...

The hybrid high overtone bulk acoustic wave resonators (HBARs) consisting of a piezoelectric film transducers and gallium gadolinium garnet substrates with yttrium iron films (YIG-GGG-YIG) are used for experimental excitation detection acoustically driven spin waves (ADSWs). Two types HBAR made Al-ZnO-Al (differed through the electrodes’ geometry) were deposited onto YIG-GGG-YIG trilayers diffe...

Citation Jungfleisch, M. B., et al. "Thickness and power dependence of the spin-pumping effect in Y[subscript 3]Fe[subscript 5]O[subscript 12/Pt heterostructures measured by the inverse spin Hall effect. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this ...

We report on the design, fabrication, and characterization of compact tunable yttrium iron garnet (YIG)-based RF resonators based ?m-sized spin-wave cavities. Inductive antennas with both ladder meander configurations were used as transducers between spin waves signals. The excitation ferromagnetic resonance standing in YIG cavities led to sharp resonances quality factors up 350. observed spect...