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Your search keyword '"P. Divya"' showing total 29 results
Start Over Author "P. Divya" Journal journal of materials science: materials in electronics
29 results on '"P. Divya"'

16. Synthesis, growth, XRD, NLO, CHNSO, structure by theoretical approach, dielectric, absorbance, photoconductivity and bio studies of 4-(4-Acetyl-5-Methyl-1H-1, 2, 3-Triazol-1-yl) Benzonitrile crystals for optical, opto-electronic, and photonics utilities

Author

Maalmarugan, J., Yokeswaran, V., Divya, R., Ganesan, H., Patel, R. P., Flora, G., SenthilKannan, K., Murugananthan, K., Vijayalakshmi, B., sumithkumar, M. Hari, Rani, J. Janci Arockia, and Meena, M.

Published
2021
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25. Facile morphology-controlled synthesis of nanostructured MnMoO4 nanorods as an advance electrode material for supercapacitor application

Author

P. Divya, J. Yesuraj, S. Radha, and G. Harichandran

Subjects
010302 applied physics, Supercapacitor, Horizontal scan rate, Materials science, chemistry.chemical_element, Nanotechnology, Manganese, Molybdate, Condensed Matter Physics, Electrochemistry, 01 natural sciences, Capacitance, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, 0103 physical sciences, Electrode, Nanorod, Electrical and Electronic Engineering
Abstract

A facile microwave-assisted method has been successfully established for the preparation of manganese molybdate (MnMoO4) materials. The surface morphologies of the MnMoO4 specimens were altered by varying the duration of microwave irradiation, and various morpholologies such as rounded rectangular shaped nanosheets and ultra-small nanorod structures have been attained. The proposed use of MnMoO4 as an active electrode material for supercapacitor application was evaluated by cyclic voltammetric and chronopotentiometric measurements. It is interesting to note that the observed specific capacitance of the MnMoO4 electrode depends on its surface morphology. A unique one-dimensional MnMoO4 demonstrated excellent electrochemical properties, which provide 836 Fg−1 of specific capacitance at a scan rate of 5 mVs−1 with an excellent cycling stability (84% of the initial specific capacitance retained after 3000 cycles). These outstanding electrochemical features of MnMoO4 materials may be associated with their inherent properties such us small size, distinctive nanorod architecture and intriguing physicochemical properties. These results will render the MnMoO4 materials as new and attractive active material for promising application in supercapacitors.

Published
2019

27. Improved dielectric properties in pyrochlore type oxides: Ca3Sm3−xBixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution

Author

V. K. Vaidyan, P. Prabhakar Rao, Peter Koshy, K. Ravindran Nair, and P. Divya

Subjects
Diffraction, Acicular, Materials science, Substitution (logic), Pyrochlore, Mineralogy, Dielectric, engineering.material, Condensed Matter Physics, Microstructure, Atomic and Molecular Physics, and Optics, Lower temperature, Electronic, Optical and Magnetic Materials, Crystallography, Phase (matter), engineering, Electrical and Electronic Engineering
Abstract

Improved dielectric properties are observed in pyrochlore type oxides, Ca3Sm3−x BixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution. The dielectric constant increased with increasing Bi concentration. The dielectric constant obtained for Ca3Bi3Ti7Nb2O26.5 is 110, whereas, without Bi (Ca3Sm3Ti7Nb2O26.5) it is 62 at 100 kHz. The Powder X-ray diffraction analysis reveals that cubic pyrochlore type phase is formed for all the compositions. The experimental results further show that the formation of Bi substituted compounds is complete at a lower temperature than the compounds without Bi. Microstructure studies reveal that the grains formed are acicular when Bi is present in large amounts compared to cuboid grains in samples having no Bi.

Published
2005

28. Improved dielectric properties in pyrochlore type oxides: Ca3Sm3−xBixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution.

Author

P. Rao, K. Nair, P. Divya, Peter Koshy, and V. Vaidyan

Abstract

Improved dielectric properties are observed in pyrochlore type oxides, Ca3Sm3−x BixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution. The dielectric constant increased with increasing Bi concentration. The dielectric constant obtained for Ca3Bi3Ti7Nb2O26.5 is 110, whereas, without Bi (Ca3Sm3Ti7Nb2O26.5) it is 62 at 100 kHz. The Powder X-ray diffraction analysis reveals that cubic pyrochlore type phase is formed for all the compositions. The experimental results further show that the formation of Bi substituted compounds is complete at a lower temperature than the compounds without Bi. Microstructure studies reveal that the grains formed are acicular when Bi is present in large amounts compared to cuboid grains in samples having no Bi. [ABSTRACT FROM AUTHOR]

Published
2005

29. Improved dielectric properties in pyrochlore type oxides: Ca3Sm3−xBixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution

Author

Rao, P., Nair, K., Divya, P., Koshy, Peter, and Vaidyan, V.

Abstract

Improved dielectric properties are observed in pyrochlore type oxides, Ca3Sm3−x BixTi7Nb2O26.5 (x = 1.0, 2.0 or 3.0) by Bi substitution. The dielectric constant increased with increasing Bi concentration. The dielectric constant obtained for Ca3Bi3Ti7Nb2O26.5 is 110, whereas, without Bi (Ca3Sm3Ti7Nb2O26.5) it is 62 at 100 kHz. The Powder X-ray diffraction analysis reveals that cubic pyrochlore type phase is formed for all the compositions. The experimental results further show that the formation of Bi substituted compounds is complete at a lower temperature than the compounds without Bi. Microstructure studies reveal that the grains formed are acicular when Bi is present in large amounts compared to cuboid grains in samples having no Bi.

Published
2005
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