Effect of K+ ion on the dielectric properties of metallo organic L-alanine cadmium chloride single crystals

Bright, K. C.; Freeda, T. H.

doi:10.1007/s00339-010-5698-9

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…It is mentioned that the introduction of large ionic radius in the structure leads to a significant decrease in the value of the dielectric constant. [ 31 ] In addition, formation of conductive networks at the Pt/MgSe interface may lead to a significant decrease in the dielectric constant. [ 32 ] The shrinkage in the energy bandgap that resulted from Pt nanosheets participation in the structure provide an evidence for this belief.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Optical and Electrical Interactions at the Pt/MgSe Interfaces Designed for 6G Communication Technology

Algarni

Qasrawi

Khusayfan

2022

Cryst. Res. Technol.

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Magnesium selenide thin films are coated onto glass and semitransparent Pt substrates (nanosheets) by the vacuum evaporation technique under a vacuum pressure of 10 −5 mbar. The effect of Pt nanosheets of thicknesses of 100 nm on the structural, compositional, optical, and electrical properties of MgSe is explored. It is found that platinum nanosheets enhance the light absorbability in the visible and infrared ranges of light. They slightly redshift the energy bandgap and decrease the dielectric constant. The strong interaction between Pt and MgSe increases the electrical conductivity by five orders of magnitude. Pt forms shallow impurity levels in the energy bandgap of MgSe allowing the tunneling process at the Pt/MgSe interfaces. Practically, a Pt/MgSe/Pt tunneling type device is fabricated and tested by the microwave impedance spectroscopy technique. It is found that Pt/MgSe/Pt devices can exhibit resonance-antiresonance and negative capacitance effects which are important in electronic circuits as parasitic capacitance cancelers, signal amplifiers, and noise reducers. In addition, evaluation of the cutoff frequency spectra has shown the ability of using the Pt/MgSe/Pt devices as microwave resonators appropriate for 5G/6G technologies. A cutoff frequency larger than 70 GHz can be achieved by imposing ac signal of amplitude of 0.10 V.

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Section: Resultsmentioning

confidence: 99%

Enhanced Optical and Electrical Interactions at the Pt/MgSe Interfaces Designed for 6G Communication Technology

Algarni

Qasrawi

Khusayfan

2022

Cryst. Res. Technol.

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“…As the frequency of the crystal increases dielectric loss decreases up to 100 KHz and then increases for 323K, 333K and 363K and the higher value of dielectric loss experienced at lower frequency. This property is ascribed due to the presence of space charge polarization near the grain boundary interfaces [21,22]. Pb 2+ doped LTCA shows that, the lowest minimum position of dielectric loss shifts towards the higher frequency range and experiences high static permittivity.…”

Section: Resultsmentioning

confidence: 99%

Enhanced linear and non-linear optical activity of lead onto l-threonine cadmium acetate crystal

Queen¹,

Bright²,

Delphine³

et al. 2021

J Mater Sci: Mater Electron

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Herein, we describe the growth and characterization of new crystal lead doped L-Threonine cadmium acetate (LTCA). The supramolecular coordination compounds are crystallized by slow evaporation technique at ambient temperature. The X-ray diffraction techniques con rm monoclinic crystal system and the presence of lead onto the LTCA lattice. L-Threonine amino acids have the unique properties like zwitter ionic nature and molecular chirality, which improves the optical properties of the crystal. The linear optical parameters such as optical band gap and refractive indexes are estimated from Uv-Vis analysis.The variation of dielectric constant, dielectric loss with frequency is studied using LCR meter. Due to the electropositive character of lead the static permittivity increases. Magnetic behavior changes to paramagnetic nature due to the inclusion of lead. TG/DTA analysis suggests, the crystal is thermally stable up to 135.32°C. Using Nd-YAG laser the NLO property was studied and the crystal shows higher SHG e ciency than the LTCA crystal.

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“…In the present study, L-alanine (AR) is doped with maleic acid (AR) in different concentration and synthesized by Slow Evaporation method (Kumar et al, 2008;Chitra and Palaniswamy, 2010;Bright and Freeda, 2010;Lucia Rose et al, 2010). The grown crystals were subjected to Optical characterization studies such as single crystal XRD (Dhanuskodi and Vasantha, 2004) FTIR, optical absorbance were done (Prabha and Palaniswamy, 2010).…”

Section: Methodsmentioning

confidence: 99%

Optical Characterizations of L-Alaninium Maleate Single Crystals

Seethalaks¹,

Mohan²

2015

Asian J. of Applied Sciences

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The innovation, with an eye for application, has been the key to successful crystal harvesting. It is realized that crystalline material is intrinsically applied and basic research in this area needs to be directed and motivated by specific applications in technology. Combination of aminoacids with organic materials gets increased efficiency made this study of optical characterization of l-alaninium maleate-a novel organic NLO crystal. The single crystals are grown by slow evaporation technique by mixing L-Alanine with maleic acid in the ratio 1:0.25, 1:0.5, 1:0.75, 1:1. Single crystal X-ray diffraction study is compared with powder X-ray diffraction study. The FTIR spectrum is drawn for the crystals and their functional groups were determined. The UV-Vis-NIR spectrum shows less optical absorption in the entire visible region. The band gap energy of the crystals were calculated. Non-Linear optical efficiency was evaluated by Kurtz and Perry powder technique using Q-switched Nd-YAG laser.

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Effect of K+ ion on the dielectric properties of metallo organic L-alanine cadmium chloride single crystals

Cited by 11 publications

References 14 publications

Enhanced Optical and Electrical Interactions at the Pt/MgSe Interfaces Designed for 6G Communication Technology

Enhanced Optical and Electrical Interactions at the Pt/MgSe Interfaces Designed for 6G Communication Technology

Enhanced linear and non-linear optical activity of lead onto l-threonine cadmium acetate crystal

Optical Characterizations of L-Alaninium Maleate Single Crystals

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