Showing 1-25 of 8,807 resultsfor "Index Terms":yttrium
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Compositional tuning of photoluminescence properties in Nd-doped YAG-YSGG mixed structures
A. Anedda;C.M. Carbonaro;D. Chiriu;P.C. Ricci;M. Aburish-Hmidat;M. Guerini;P.G. Lorrai;E. Fortin
The photoluminescence (PL) properties of neodymium-doped yttrium aluminum garnet and yttrium scandium gallium garnet mixed structures were investigated as a function of the relative concentration of the two garnets. The blue shift of the emission bands in the 930-950-nm range is ascribed to compositional tuning effect. An analytical model to estimate the variation of the PL position as a function ...Show More
Experimental Study of Magnetostatic Waves Excitation by Coaxial-Microstrip Transducer in Rectangular Yttrium-Iron Garnet Films
Martiros D. Atoev;Ivan I. Natkhin;Rudolf K. Babichev;Anatoly B. Kleshchenkov
2021 Radiation and Scattering of Electromagnetic Waves (RSEMW)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Excitation of magnetostatic waves in a film of yttrium iron garnet by a short-circuited coaxial-microstrip converter-probe is considered. The frequency dependences of return losses were measured for different orientations of the transducer half-turn plane relative to the direction of the external constant magnetic field.Show More
Experimental Investigation of Magnetostatic Waves Excitation by Coaxial Transducers in Yttrium Iron Garnet Films
2022 International Conference on Actual Problems of Electron Devices Engineering (APEDE)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Excitation of magnetostatic waves in a yttrium iron garnet film by a short-circuited SMA transducer, whose thin linear jumper connects the central conductor to an external grounded coaxial cylinder, is considered. The frequency dependences of the return loss for yttrium iron garnet films of different thickness with different orientation of the transducer thin linear jumper relative to the applied ...Show More
Microwave circulator using yttrium iron garnet film
2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522)
Year: 2000 | Conference Paper |
Circulators and isolators are well-known nonreciprocal devices and widely used in the communication engineering. Most of circulator structures consist of polycrystal ferrite substrate having the thickness of more than 1 mm. Recently ferrite film circulator has been actively studied because of the advantage of low loss and easy integration with semiconductor device such as FET. This paper treats th...Show More
Synthesis and Characterization of High-Purity Yttrium-Iron-Garnet Nanowires Inside a Porous Silicon Membrane by the Sol–Gel Method
Leili Hayati;Ashkan Ghanbarzadeh;Fabrizio Lombardi;Carmine Vittoria
Recently, nonmetallic ferromagnetic nanowires (NWs) have been implemented in porous templates. Such composite substrates are used to design various microwave, magnetic, and electronic devices. To synthesize ferrite NWs, the precursor solution consists of either magnetic nanoparticles (NPs) dispersed in a polymer as a surfactant or metal nitrates, which are used in a sol-gel method. The magnetic pr...Show More
Thick epitaxial YIG films with narrow FMR linewidth
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)
Year: 2012 | Conference Paper |
The La-doped yttrium iron garnet (YIG) films with thickness up to 130 µm were grown by liquid phase epitaxy (LPE) method. All grown thick films demonstrate “mirror” and “striation” types of surface morphology that depend from film growth temperature and thickness. Addition of B2O3 is favourable to a change the surface morphology into a “mirror” one. The mechanisms of the morphological changes are ...Show More
Spin Waves Focused Beams in YIG Films
Galina Dudko;Alexander Kozhevnikov;Valentin Sakharov;Yuri Khivintsev;Sergey Vysotskii;Marco Madami;Gianluca Gubbiotti;Alexander Khitun;Yuri Filimonov
2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)
Year: 2020 | Conference Paper |
Spin waves (SW) focused beams propagation and interference under excitation by curvilinear focusing transducers in tangentially magnetized yttrium iron garnet (YIG) films were studied using micromagnetic simulations and Mandelstam- Brillouin light scattering technique. It is shown that due to anisotropic SW propagation in tangentially magnetized films the two-dimensional maps of SW intensity exhib...Show More
Improvements in the performance of silicon photovoltaic cells for solar applications are adapted for nonsolar photovoltaic applications. Improved monochromatic light efficiencies above 45% are reported including efficiencies close to 40% for relatively long-wavelength (1.064 mu m) light as produced by neodymium-doped yttrium-aluminum garnet (Nd:YAG) lasers.<>Show More
Parametric excitation of spin waves in bismuth-substituted yttrium iron garnet films using the first-order Suhl instability
Proceedings International Conference on MEMS, NANO and Smart Systems
Year: 2003 | Conference Paper |
The first-order Suhl instability in a bismuth-substituted yttrium iron garnet (Bi-YIG) film is parametrically driven at the difference frequency of two microwave oscillators. Our results show that the onset of the instability occurs at lower threshold power when excited parametrically, and the power of the instability can be fed into other spin wave modes. Other nonlinear processes are also enhanc...Show More
Interactions between aggressive ions and the surface of a magnesium-yttrium alloy
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Year: 2012 | Conference Paper |
Magnesium alloys possess many desirable properties for biodegradable orthopedic implants. Unfortunately, magnesium degrades too rapidly in vivo. This rapid degradation reduces the alloys' mechanical properties and increases the alkalinity of the local environment. Controlling the degradation rate and mode is an essential step in the development of magnesium based biomaterials. Accomplishing this e...Show More
Fabry–Perot Open Resonator Technique for Dielectric Permittivity and Loss Tangent Measurements of Yttrium Iron Garnet
IEEE Transactions on Magnetics
Cited by: Papers (12)
This paper presents a Fabry-Perot open resonator system for the precision measurement of real part of permittivity and loss tangent of yttrium iron garnet specimens at 60 GHz. This system allows us to vary the cavity length at 10-nm step size to study the resonance profile of each excited fundamental mode with great stability and reproducibility. The obtained highly symmetrical, fully resolved Gau...Show More
High Performance Compact Microstripline Phase Shifter at C-Band Using Yttrium Iron Garnet
I. Viswanathan;S. D. Yoon;T. Sakai;A. L. Geiler;J. W. Wang;C. N. Chinnasamy;C. Vittoria;V. G. Harris
IEEE Transactions on Magnetics
Cited by: Papers (11)
We report the fabrication of planar microstripline reciprocal phase shifter using a bulk Yttrium Iron Garnet (YIG) material. The propagation direction of the microstripline and magnetization direction of the YIG is collinear, and the length of the microstripline and the YIG was 50 mm in length. The proposed design shows large differential phase shifts of 100 degrees for applied magnetic fields var...Show More
Acoustic resonance spectroscopy of nanoceramics
N.I. Polzikova;G.D. Mansfeld;S.G. Alekseev;I.M. Kotelyanskii;F.O. Sergeev
Using resonance acoustic spectroscopy method frequency dependencies of acoustic losses in a dense yttrium aluminum garnet (YAG) nanoceramics prepared by the method of nanopowder sintering were studied in the range from 0.3 to 4 GHz. For the acoustic losses in the best available nanoceramics quadratic frequency dependence was experimentally obtained. The best Q-factor of our resonators based on cer...Show More
Yttrium-Iron Garnet Film Magnetometer for Registration of Magnetic Nano- and Submicron Particles: In Vitro and In Vivo Studies
N. Koshev;P. Kapralov;S. Evstigneeva;O. Lutsenko;P. Shilina;M. Zharkov;N. Pyataev;A. Darwish;A. Timin;M. Ostras;I. Radchenko;G. Sukhorukov;P. Vetoshko
In the current article, we present a new kind of magnetometer for quantitative detection of magnetic objects (magnetic nano- and submicron particles) in biological fluids and tissues. The sensor is based on yttrium-iron garnet film with optical signal registration system. Inheriting the working principle of a fluxgate magnetometers, the sensor works at a room-temperature, its wide dynamic range al...Show More
Origin of Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Thin Films Grown on Si (100)
IEEE Transactions on Magnetics
Cited by: Papers (9)
We report the magnetic properties of yttrium iron garnet (YIG) thin films grown by pulsed laser deposition technique. The films were deposited on Si (100) substrates in the range of 15-50 nm thickness. Magnetic characterizations were investigated by ferromagnetic resonance spectra. Perpendicular magnetic easy axis was achieved up to 50 nm thickness. We observed that the perpendicular anisotropy va...Show More
Thermoelectric Characteristics of STE Generator Fabricated From LPE Bi- and Al-Substituted YIG Films
Masaaki Imamura;Hironori Asada;Ryo Nishimura;Daisuke Tashima;Jiro Kitagawa
IEEE Transactions on Magnetics
Cited by: Papers (4)
A spin thermoelectric (STE) generator is composed of a thin paramagnetic metal (PM) layer, ferrimagnetic insulator (FMI) and PM/FMI bilayer interface. Various studies have been carried out on improving the characteristics of each part of this structure in order to raise the STE voltage V_{\mathrm {STE}} . We investigated the substitution of bismuth for yttrium and aluminum for iron to observe t...Show More
An Experimental Study on Linearity of a Magnetooptic Crystal Sensor Using YIG in Magnetic Field Measurement
Longbiao Wang;Junjie Jiang;Zhuyong Li;Zhiyong Hong;Zhijian Jin
2018 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)
Year: 2018 | Conference Paper |
Different from the conventional magnetic field sensor based on Hall effect, Faraday effect based magneto-optic crystal sensors (MOSs) not only can be used to measure magnetic fields but also have the features of high insulation and insensitivity to electromagnetic interference. In this paper, we investigated linearity of a MOS using an yttrium iron garnet (YIG) in magnetic field measurement at roo...Show More
Enhancement of Infrared Faraday Effect in YIG Film with Au Lattice
Sergey Polevoy;Sergey Tarapov;Aleksey Girich;Arthur Vakula;Sergiy Nedukh;Kateryna Sova
2024 Photonics Global Conference (PGC)
Year: 2024 | Conference Paper |
It was numerically shown that the application of Au lattice on the surface of thin yttrium iron garnet film leads to the Faraday effect enhancement in the infrared band by a factor of 80 at the oblique incidence. This result can be used to design compact magnetooopic devices and efficient photon-magnon frequency converters from the microwave to optical range.Show More
Evaluation of cell characteristics by step-wise orientational rotation using optoelectrostatic micromanipulation
The characteristics of a single cell can be studied using optoelectrostatic micromanipulation (OEMM) techniques. Escherichia coli (E. coli) and Schizosaccharomyces pombe (S. Pombe) cells were characterized by step-wise orientational rotation driven by a high-frequency alternating electric field. The peak voltage and frequency of the electric field ranged from 2.5 to 80 V (average electric field: 0...Show More
Nonlinear thermal and stress effects and scaling behavior of YAG slab amplifiers
Yttrium aluminum garnet (YAG) has thermal and mechanical properties that vary strongly with temperature. In the paper, we extend previously reported rod amplifier nonlinear average power scaling relationships to slab amplifiers. As found previously with rod amplifiers, we show that, at room temperature and below, temperature profiles obtained are nonquadratic and that the magnitude of the stresses...Show More
Analysis and design of a novel leaky YIG film guided wave optical isolator
Journal of Lightwave Technology
Cited by: Papers (10)
A guided wave optical isolator using a four layered leaky yttrium iron garnet (YIG) waveguide with a YIG guiding layer is proposed and analyzed through a transfer matrix formulation. The dependence of isolation characteristics on different waveguide parameters are discussed. It is shown that for four layered structures an isolation ratio of about 24 dB can be achieved with YIG films having large g...Show More
Possibility of Nd:YAG-PLD Method for Fabricating REBCO Coated Conductors
Yusuke Ichino;Yutaka Yoshida;Takuya Yoshimura;Ikuo Ono;Yoshiaki Takai;Masateru Yoshizumi;Teruo Izumi;Yuh Shiohara
A Nd:YAG (neodymium-doped yttrium aluminum garnet) laser is environmentally safe, due to the absence of any poisonous or hazardous gases, and also economical, without the need for expensive gases. We can thus expect a safe and low cost {\rm REBa}_{2}{\rm Cu}_{3}{\rm O}_{y} (REBCO)-coated conductor fabrication process by using an Nd:YAG laser. We investigated the fabrication of ${\rm YBa}_{2}{\r...Show More
Characteristics of microstrip line on YIG film substrate and its application to beam forming of antenna
1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282)
Year: 1999 | Conference Paper |
Cited by: Papers (2)
Characteristics of a microstrip line on a yttrium iron garnet (YIG) film substrate are investigated by using the spectral domain method and the effect of the strip width on the coupling between magnetostatic forward volume wave (MSFVW) and quasi-TEM mode are discussed under the estimation of the calculated dispersion relation. To confirm the dispersion curve, delay line characteristics of the stri...Show More
Microstrip line tunable filters using yttrium iron garnet film substrate
APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577)
Year: 2001 | Conference Paper |
Cited by: Papers (2)
Microstrip line tunable filters with a longitudinally magnetized yttrium iron garnet film have been investigated experimentally and theoretically. A half wavelength microstrip line resonator with L-shaped stubs, longer side of which is parallel to the center strip, has been proposed so that attenuation poles are tunable with applied magnetic bias fields and synchronized with the passband, and the ...Show More
Characteristics of microstrip and slot lines on yttrium iron garnet film
2002 3rd International Conference on Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002.
Year: 2002 | Conference Paper |
Dispersion curves of the microstrip and slot lines were derived by using spectral domain method, where layered structure consisting YIG film and GGG was assumed to control the dispersion characteristics by magnetic field. The results were mainly governed by the magnetostatic forward volume wave (MSFVW) mode with slow wave operation for the microstrip line and by the magnetostatic surface wave (MSS...Show More
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