Improved electrical and photoluminescence properties in Nd substitution of 0.94(Na0.5Bi0.5TiO3)-0.06BaTiO3 lead free multi-functional ceramics

Kandula, Kumara Raja and Raavi, Sai Santosh Kumar and Asthana, Saket (2018) Improved electrical and photoluminescence properties in Nd substitution of 0.94(Na0.5Bi0.5TiO3)-0.06BaTiO3 lead free multi-functional ceramics. Advanced Materials Letters, 9 (09). pp. 656-659. ISSN 09763961

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Abstract

Nd3+-substituted lead free 0.94(Na0.5Bi0.5-XNdXTiO3)-0.06BaTiO3 (x=0, 0.01) ceramics were synthesized by using conventional solid state route. The XRD studies revealed the phase purity and existence of the monoclinic (Cc), cubic (Pm3m) along with the minor tetragonal phases confirmed with help of structural refinement. The electrical poling field induces the structural modification to rhombhohedral (R3c), cubic (Pm3m) along with the minor tetragonal phase (P4mm). The dielectric measurements revealed the relaxor behavior. The coercive field drops remarkable and there is slight improvement in the polarization with the substitution of Nd as compared to the pure 0.94(Na0.5Bi0.5TiO3)-0.06BaTiO3. The luminescence occurred from the optically active element Nd3+ under the influence of the average crystal symmetry of 0.94(Na0.5Bi0.5TiO3)-0.06BaTiO3. The luminescence quenching observed without any shift in position upon the poling supports the observation of higher symmetric structure.

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IITH Creators:
IITH CreatorsORCiD
Raavi, Sai Santosh Kumarhttp://orcid.org/0000-0002-2496-9233
Asthana, Sakethttp://orcid.org/0000-0002-6420-3304
Item Type: Article
Uncontrolled Keywords: X-ray diffraction, dielectric, electromechanical coupling, polarization and photoluminescence.
Subjects: Physics
Divisions: Department of Physics
Depositing User: Library Staff
Date Deposited: 22 Oct 2019 09:17
Last Modified: 22 Oct 2019 09:17
URI: http://raiith.iith.ac.in/id/eprint/6623
Publisher URL: http://doi.org/10.5185/amlett.2018.2038
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