Phase diagram of the system of (1–х)BiFeO3–xPbFe0.5Nb0.5O3 solid solutions at room temperature
- Authors: Shilkina L.A.1, Pavlenko A.V.1,2, Reznitchenko L.A.1, Verbenko I.A.1
-
Affiliations:
- Research Institute of Physics
- Southern Scientific Center
- Issue: Vol 61, No 2 (2016)
- Pages: 263-269
- Section: Lattice Dynamics and Phase Transitions
- URL: https://journals.rcsi.science/1063-7745/article/view/189890
- DOI: https://doi.org/10.1134/S1063774516020231
- ID: 189890
Cite item
Abstract
Experimental samples of solid solutions of the (1–x)BiFeO3–xPbFe0.5Nb0.5O3 (0.00 ≤ x ≤ 1.00, Δx = 0.025–0.05) system have been prepared according to the conventional ceramic technology. Their structural and dielectric characteristics have been studied. A phase diagram of the system at room temperature has been plotted taking into account the crystallochemical specificity, spatial inhomogeneity, and structural imperfection of the samples. This diagram is characterized by the presence of solid substitutional and interstitial solutions; the formation of concentration ranges with a dominant role of BiFeO3 and PbFe0.5Nb0.5O3; the presence of five single-phase regions, two regions of coexistence of phase states, and three morphotropic regions; and the formation of six regions with a constant experimental unit-cell volume. Correlations between the structural characteristics and dielectric properties of the ceramics under study have been established.
About the authors
L. A. Shilkina
Research Institute of Physics
Email: avpavlenko@sfedu.ru
Russian Federation, Rostov-on-Don, 344090
A. V. Pavlenko
Research Institute of Physics; Southern Scientific Center
Author for correspondence.
Email: avpavlenko@sfedu.ru
Russian Federation, Rostov-on-Don, 344090; Rostov-on-Don, 344006
L. A. Reznitchenko
Research Institute of Physics
Email: avpavlenko@sfedu.ru
Russian Federation, Rostov-on-Don, 344090
I. A. Verbenko
Research Institute of Physics
Email: avpavlenko@sfedu.ru
Russian Federation, Rostov-on-Don, 344090