Ramana Mudinepalli, Venkata ; Ramamanohar Reddy, N. ; Lin, Wen-Chin ; Siva Kumar, K. V. ; Murty, B. S, (2015) Phase transitions of the ferroelectric Na0.5Bi0.5TiO3 by dielectric and internal friction measurements Advanced Materials Letters, 6 (1). pp. 27-32. ISSN 0976-3961
Full text not available from this repository.
Official URL: http://www.vbripress.com/aml/articles/details/587/
Related URL: http://dx.doi.org/10.5185/amlett.2015.5620
Abstract
This work focuses on the high temperature dielectric and mechanical spectroscopic properties of lead free relaxor Sodium Bismuth Titanate (NBT) ceramics, fabricated by conventional ceramic double sintering method. Systematic measurements of dielectric and mechanical properties have been performed as a function of temperature. A sequence of phase transitions has been studied by both dielectric and anelastic measurements. Three internal friction peaks were observed near 350, 200 and 120° C. The 350°C-peak corresponds to a transition associated with the tetragonal (P4bm) to rhombohedral (R3c) phase, and the 200°C-peak is related to the ferroelectric to antiferroelectric phase transition. The 120°C-peak could be ascribed to the interaction between the domain walls and the diffusion of oxygen vacancies in the domains.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to VBRI Press. |
| Keywords: | Internal Friction; Ferroelectric; Elastic Modulus; Dielectric; Phase Transition; Curie Transition Temperature |
| ID Code: | 110955 |
| Deposited On: | 06 Dec 2017 11:09 |
| Last Modified: | 06 Dec 2017 11:09 |
Repository Staff Only: item control page
