Texture and terahertz analysis of YBa2Cu3O7 grown onto LaAlO3 by the chemical solution deposition technique

Cornejo, H. Sanchez; Valladares, L. De Los Santos; Kamboj, Varun S.; Domínguez, A.; González, Juan Carlos; Anaya, Ana Osorio; Moreno, N. O.; Beere, Harvey E.; Ritchie, D. A.; Newton, Peter; Barnes, H.W.C.

doi:10.1080/25787616.2021.2022294

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Researchers from all around the world have recently become increasingly interested in the terahertz gap, which has a frequency range of 0.1 THz to 10 THz [1] and a wavelength range of 30 micrometers to 3 millimeters. Terahertz gap has a wide variety of applications ranging from industrial applications like detecting faults in tablet coating through product inspection, chemical [2], astronomical [3], and physics applications like material characterization, medical applications like cancer detection [5], security applications like detecting weapons in the airports [6], military applications [7], 6G applications [8], sensing applications [9] and many more. Over the last few decades, the terahertz frequency domain metamaterial structures have attracted a great deal of interest.…”

Section: Introductionmentioning

confidence: 99%

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

Prasad

Pardhasaradhi

Madhav

et al. 2023

Preprint

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In this research article, we proposed a split ring resonator(SRR) based metasurface absorber based on graphene material. The performance of the graphene-based absorber at terahertz frequencies can be altered by varying the chemical potential of graphene material. Because of its excellent tunability and optical responsiveness at terahertz frequency, graphene-based metamaterials have been widely used in optoelectronic devices, sensors, filters, and many more. The proposed structure contains three layers namely graphene-based patch a conductive layer, lossy silicon as a dielectric layer, and finally gold as a bottom conductive layer. The purpose of this research is to present a thorough investigation of graphene-based THz metamaterial absorbers, including modeling and verification of the structure through an equivalent circuit approach. It is very much beneficial to understand the conductive phenomenon of graphene material by tuning the fermi chemical potential.

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Section: Introductionmentioning

confidence: 99%

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

Prasad

Pardhasaradhi

Madhav

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Researchers from all over the world are paying more attention towards the terahertz communication, which has a frequency range of 0.1 THz to 10 THz [1], and its wavelength range is from 30 micrometers to 3 millimeters. As terahertz frequency range contains high speed and larger bandwidth, it can be used for various applications like detecting faults in tablet coating through product inspection, chemical [2], astronomical [3], and physics applications like material characterization [4], medical applications like cancer detection [5], security applications like detecting weapons in the airports [6], military applications [7], 6G applications [8], sensing applications [9], and many more. Over the last few decades, metamaterial based structures for terahertz frequency domain have attracted a great deal of interest.…”

Section: Introductionmentioning

confidence: 99%

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

Prasad,

Pardhasaradhi,

Madhav

et al. 2023

PIER M

View full text Add to dashboard Cite

In this research article, we propose a split ring resonator (SRR) based metasurface absorber based on graphene material. The performance of the graphene-based absorber at terahertz frequencies can be altered by varying the chemical potential of graphene material. Because of its excellent tunability and optical responsiveness at terahertz frequency, graphene-based metamaterials have been widely used in optoelectronic devices, sensors, filters, and many more. The proposed structure contains three layers namely graphene-based patch as a conductive layer, lossy silicon as a dielectric layer, and finally gold as a bottom conductive layer. The proposed unit cell resonates at three different absorption peak frequencies of 2.91 THz, 8.1 THz, and 9.61 THz with operating frequency bands at (2.66 THz to 3.12 THz), (7.71 THz-8.47 THz), and (9.57 THz-9.63 THz), respectively. The purpose of this research is to present a thorough investigation of graphene-based THz metamaterial absorbers, including modeling and verification of the structure through an equivalent circuit approach. It is very much beneficial to understand the conductive phenomenon of graphene material by tuning the Fermi chemical potential and achieve a high percent level of absorption for the corresponding absorption frequency bands.

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Manometric Determination of the Oxygen Diffusion Coefficients in YBa2Cu3−yFeyO6+x

Kargin,

Cornejo,

Zhangozin

et al. 2024

J Supercond Nov Magn

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Thermodynamic parameters, such as the activation energy (Ea) and the diffusion coefficient (D0), of weakly bounded oxygen in Fe-doped YBa2Cu3O6+x (YBa2Cu3-yFeyO6+x) system were obtained utilizing the Manometric technique. It is found that under isothermal conditions, oxygen desorption in YBa2Cu3O6+x (YBCO) occurs following an exponential decay trend and in two distinct stages. During the first stage, the majority of absorbed oxygen is released, while the second stage exhibits a delayed degassing kinetics. Ea and D0 were determined for both, pressed and powdered, samples of the YBCO and YBa2Cu3-yFeyO6+x systems, from experimental kinetic curves, depicting gas release P(t) under isothermal vacuum degassing conditions. It is demonstrated that doping with Fe prevents oxygen exchange in YBCO, as evidenced by the reduction in the quantity of released oxygen with increasing iron index (y). The experimental results validate the efficacy of the Manometric method for analyzing and determining the thermodynamic and kinetic properties of the YBCO superconductor.

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Texture and terahertz analysis of YBa₂Cu₃O₇ grown onto LaAlO₃ by the chemical solution deposition technique

Cited by 3 publications

References 23 publications

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

A Circular Split Ring Resonator Absorber with Graphene Material for Terahertz Communication Applications

Manometric Determination of the Oxygen Diffusion Coefficients in YBa2Cu3−yFeyO6+x

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