Growth and characterization of tetramethyl ammonium tetrachloro zincate II: A ferroic crystal

Devashankar, S.; Mariappan, L.; Sureshkumar, P.; Rathnakumari, M.

doi:10.1016/j.jcrysgro.2009.06.056

Cited by 22 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a representative of hydrogen‐bonded materials that possess important piezoelectric, ferroelectric, dielectric and electro‐optic properties 12–15. Recently, the growth and NLO properties of ammonium derivatives have been reported 16–22…”

Section: Introductionmentioning

confidence: 99%

Vibrational spectra and structural studies of nonlinear optical crystal ammonium D, L‐tartrate: a density functional theoretical approach

Vidya

Ravikumar²,

Joe³

et al. 2011

J Raman Spectroscopy

View full text Add to dashboard Cite

Single crystals of ammonium D, L-tartrate, a potential nonlinear optical (NLO) material of interest, were grown by the slow evaporation technique. The crystal structure was determined by single-crystal X-ray diffraction. Fourier transform infrared and Raman spectra of the crystallized molecule were recorded and analyzed. The geometry, intermolecular hydrogen bonding, first hyperpolarizability and harmonic vibrational wavenumbers were calculated with the help of B3LYP density functional theory method. The red shift of hydroxyl and NH 4 + stretching wavenumbers indicate the formation of inter-and intramolecular hydrogen bonding. Simultaneous activation of CH stretching wavenumbers shows the presence of intramolecular charge transfer in the molecule. Natural bond orbital analysis was carried out to demonstrate the various inter-and intramolecular interactions that are responsible for the stabilization of this molecule, leading to high NLO activity.

show abstract

Section: Introductionmentioning

confidence: 99%

Vibrational spectra and structural studies of nonlinear optical crystal ammonium D, L‐tartrate: a density functional theoretical approach

Vidya

Ravikumar²,

Joe³

et al. 2011

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…The planes (110) are well developed and have dominated crystal morphology. The crystals grew faster along at pH value 7 [18]. The quality of grown crystal TMACB can be observed by the surface morphology of the crystal [19].…”

Section: Resultsmentioning

confidence: 99%

Structural, Vibrational and Physical Properties on Tetramethyammonium Cadmium Bromide Ferroelectric Single Crystal

Bhuvaneswari¹,

Venkatachalam²

2018

Asian J. Chem.

View full text Add to dashboard Cite

INTRODUCTIONIn current years, metal organic complexes have attracted good attention owing to a result of their application in second and third harmonic generation, optical bistability, laser driven fusion, laser remote sensing, optical disc data storage, medical and spectroscopic image processing, colour display and optical communication [1][2][3]. The metallic organic complexes combined the benefits of each the organic and inorganic substances. Many new materials are having a wide application inside the area of frequency conversion [4]. Typically these compounds are fashioned through weak hydrogen and van der Waals bonds. However, the use of some organic crystals are substantially restrained to high power laser packages because of their demerits such as low laser harm threshold, negative mechanical, low thermal balance and difficulty in producing big sized crystals. To conquer the above said negative aspects, an alternative magnificence of fabric which combines both the fine elements of organic and inorganic referred to as metal organic has been advanced [5]. This type of metal organic compounds containing organic molecules are connected to metal atoms by way of carbon-metal bonds [6][7][8] Ferroelectric crystals of tetramethylammonium cadmium bromide (TMACB) has been grown by slow evaporation solution growth technique at room temperature. Single crystal X-ray diffraction analysis revealed the newness of the crystal structure belonging to the hexagonal crystal system with lattice parameters a = 9.257 Å, c = 6.9167 Å and α = β = 90º, γ = 120º. The functional groups in the complex were identified using FT-IR and FT-Raman analyses. The thermal stability and decomposition details were studied through TG/DTA analyses. The grown crystal was subjected to surface morphology by SEM analysis and the optical properties was studied by UV-VIS-NIR analysis.From the photoluminescence studies, it was confirmed that the grown crystal has been green emission. The Vickers microhardness test conducted on the grown crystal suggests that the crystal has a relatively low mechanical strength. The dielectric constant and dielectric loss were calculated by varying the frequencies at room temperature. Dielectric studies of the grown crystal had been measured in the temperature range of 313 to 453 K.

show abstract

“…The authors of the paper commented [2] obtained this crystal, confirmed its symmetry at room temperature Pnam (another choice of the system of crystallographic axes) and concluded that it was a non-centrosymmetric (!!!) symmetry group.…”

mentioning

confidence: 86%

Comment on “Growth and characterization of tetramethyl ammonium tetrachlorozincate II: A ferroic crystal” by S. Devashankar et al. [J. Cryst. Growth 311 (2009) 4207−4212]

Tylczyñski

2010

Journal of Crystal Growth

View full text Add to dashboard Cite

Growth and characterization of tetramethyl ammonium tetrachloro zincate II: A ferroic crystal

Cited by 22 publications

References 29 publications

Vibrational spectra and structural studies of nonlinear optical crystal ammonium D, L‐tartrate: a density functional theoretical approach

Vibrational spectra and structural studies of nonlinear optical crystal ammonium D, L‐tartrate: a density functional theoretical approach

Structural, Vibrational and Physical Properties on Tetramethyammonium Cadmium Bromide Ferroelectric Single Crystal

Comment on “Growth and characterization of tetramethyl ammonium tetrachlorozincate II: A ferroic crystal” by S. Devashankar et al. [J. Cryst. Growth 311 (2009) 4207−4212]

Contact Info

Product

Resources

About