Observation of diffuse relaxor activity and normal thermal stability in Ho – modified NBT – BT lead free ceramics

Chandra Sekhar, K. S. K. R. and Krishnarjun, Banerjee and Asthana, Saket and Patri, Tirupathi and Mouli, K. Chandra (2020) Observation of diffuse relaxor activity and normal thermal stability in Ho – modified NBT – BT lead free ceramics. Ferroelectrics, 568 (1). pp. 161-174. ISSN 0015-0193

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Abstract

Ho-modified NBT-BT ferroelectric ceramics were synthesized by a conventional solid state reaction. The changes in crystal structure and identification of functional groups in the prepared ceramics were studied by XRD and Raman studies. T-dependent dielectric study reveals a diffuse dielectric phase transitions were observed in the intervals of 200– (Formula presented.) A thermal stable dielectric constant was noted in long temperature intervals, with increases Ho-concentration. The polarization study indicates the deviation of loop shape from nearly square loop into slanted slim loop with Ho dopant. These observations indicate, NBHT-BT ceramics opens for energy harvesting and thermally stable dielectric materials applications.

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IITH Creators:

IITH Creators	ORCiD
Asthana, Saket	http://orcid.org/0000-0002-6420-3304

Item Type:

Article

Uncontrolled Keywords:

Lead free, relaxor, Sodium bismuth titanate (Na0.5Bi0.5TiO3)-based, Crystal structure, Energy harvesting, Ferroelectric ceramics, Solid state reactions, Thermodynamic stability

Subjects:

Physics
Physics > Fluid mechanics
Physics > Pneumatics
Physics > Electricity and electronics
Physics > Modern physics
Physics > Astronomy Astrophysics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

26 May 2021 10:24

Last Modified:

26 May 2021 10:24

URI:

http://raiithold.iith.ac.in/id/eprint/7831