Negative permittivity and permeability spectra of Cu/yttrium iron garnet hybrid granular composite materials in the microwave frequency range

2013 ◽  
Vol 103 (26) ◽  
pp. 261906 ◽  
Author(s):  
Takanori Tsutaoka ◽  
Koki Fukuyama ◽  
Hideaki Kinoshita ◽  
Teruhiro Kasagi ◽  
Shinichiro Yamamoto ◽  
...  
Keyword(s):  
Composite Materials ◽  
Yttrium Iron Garnet ◽  
Microwave Frequency ◽  
Negative Permittivity ◽  
Frequency Range ◽  
Yttrium Iron ◽  
Granular Composite ◽  
Permittivity And Permeability ◽  
Iron Garnet

Random copper/yttrium iron garnet composites with tunable negative electromagnetic parameters prepared by in situ synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 61155-61160 ◽  
Author(s):  
Kai Sun ◽  
Zi-dong Zhang ◽  
Run-hua Fan ◽  
Min Chen ◽  
Chuan-bing Cheng ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Yttrium Iron Garnet ◽  
In Situ Synthesis ◽  
Negative Permittivity ◽  
Synthesis Process ◽  
Yttrium Iron ◽  
Permittivity And Permeability ◽  
Frequency Regime ◽  
Iron Garnet

In this paper, the tunable negative permittivity and permeability of copper/yttrium iron garnet (Cu/YIG) composites, which were prepared by in situ synthesis process, were investigated in the radio frequency regime.

Design of A 3-10 GHz Low Phase Noise YIG-Tuned Oscillator

2011 ◽  
Vol 130-134 ◽  
pp. 1374-1378
Author(s):  
Deng Bao Li ◽  
Wan Shun Jiang
Keyword(s):  
Phase Noise ◽  
Test Data ◽  
Power Output ◽  
Yttrium Iron Garnet ◽  
Noise Model ◽  
Frequency Range ◽  
Yttrium Iron ◽  
Oscillation Phase ◽  
Iron Garnet ◽  
Low Phase Noise

In this paper, a YIG-tuned oscillator with low phase noise is designed successfully, the frequency range of 3 to 10 GHz, which is based on the theory of oscillation phase noise model and yttrium iron garnet (YIG) sphere’s characteristic. Its typical measure phase noise is-123.3 dBc at 100 kHz offset and-141.2 dBc/Hz at 1 MHz and-148 dBc/Hz at 10 MHz from carrier, and its minimum power output is more than 13 dBm across most of the band. The approach used to design the oscillator circuit will be discussed and test data will be presented.

Tunable negative permittivity and magnetic performance of yttrium iron garnet/polypyrrole metacomposites at the RF frequency

2019 ◽  
Vol 7 (11) ◽  
pp. 3160-3167 ◽  
Author(s):  
Chuanbing Cheng ◽  
Runhua Fan ◽  
Guohua Fan ◽  
Hu Liu ◽  
Jiaoxia Zhang ◽  
...  
Keyword(s):  
Yttrium Iron Garnet ◽  
Negative Permittivity ◽  
Yttrium Iron ◽  
Magnetic Performance ◽  
Iron Garnet

Tunable negative permittivity and relaxation-type dispersion for permeability were evidenced in yttrium iron garnet/polypyrrole metacomposites.

scholarly journals Поверхностные магнитостатические волны в пленках железо-иттриевого граната с поверхностной субволновой метаструктурой из пленки пермаллоя

2020 ◽  
Vol 62 (9) ◽  
pp. 1494
Author(s):  
С.Л. Высоцкий ◽  
Ю.В. Хивинцев ◽  
В.К. Сахаров ◽  
Н.Н. Новицкий ◽  
Г.М. Дудко ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Transmission Coefficient ◽  
Yttrium Iron Garnet ◽  
Permalloy Film ◽  
Frequency Range ◽  
Yttrium Iron ◽  
Magnetostatic Waves ◽  
Axis Of Symmetry ◽  
Iron Garnet

The frequency dependencies of the transmission coefficient of surface magnetostatic waves (SMSW) propagating in subwavelength magnonic structures obtained by depositing of 1D and 2D thin-film metastructures based on a permalloy film 40 nm thick onto the surface of yttrium iron garnet (YIG) film were experimentally studied. Such structures in the frequency range 1–10 GHz (typical for the study of SMSW in YIG films) lead to modulation of attenuation and the effective internal magnetic field in the YIG film. The possibility of controlling the parameters of the bandwidth of the SMSW by the choice of the direction of magnetization in the plane of the structures relative to their axis of symmetry is shown.

The negative permittivity behavior of carbon nanotubes/yttrium iron garnet composites in the radio frequency

2018 ◽  
Vol 213 ◽  
pp. 282-285
Author(s):  
Min Chen ◽  
Zhongyang Wang ◽  
Peitao Xie ◽  
Zidong Zhang ◽  
Laixue Pang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Radio Frequency ◽  
Yttrium Iron Garnet ◽  
Negative Permittivity ◽  
Yttrium Iron ◽  
Iron Garnet

Analysis and lattice imaging of a transitional event on garnets

1978 ◽  
Vol 36 (1) ◽  
pp. 270-271
Author(s):  
J.Y. Laval
Keyword(s):  
Yttrium Iron Garnet ◽  
Reciprocal Lattice ◽  
Transitional Zone ◽  
Lattice Imaging ◽  
Yttrium Iron ◽  
X Ray ◽  
Ionic Process ◽  
The Matrix ◽  
High Resolution Technique ◽  
Iron Garnet

The exsolution of magnetite from a substituted Yttrium Iron Garnet, containing an iron excess may lead to a transitional event. This event is characterized hy the formation of a transitional zone at the center of which the magnetite nucleates (Fig.1). Since there is a contrast between the matrix and these zones and since selected area diffraction does not show any difference between those zones and the matrix in the reciprocal lattice, it is of interest to analyze the structure of the transitional zones.By using simultaneously different techniques in electron microscopy, (oscillating crystal method microdiffraction and X-ray microanalysis)one may resolve the ionic process corresponding to the transitional event and image this event subsequently by high resolution technique.

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