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Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium.
Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium.
- Source :
-
Ceramics International . Oct2019, Vol. 45 Issue 15, p19158-19165. 8p. - Publication Year :
- 2019
-
Abstract
- Bismuth ferrite, BiFeO 3 , was doped with a wide range of concentrations (0–30%) of Gd in order to investigate structural, ferroelectric, and magnetic properties and their correlation. Powder samples of Bi 1- x Gd x FeO 3 (x = 0.00–0.30) were prepared using the hydro-evaporation synthesis method. Sintering process at 870 °C for 6 h of as-prepared, Gd doped BiFeO 3 powders resulted in ceramic samples with relative densities in the range of (74–86) %. XRD analysis revealed that Bi 1- x Gd x FeO 3 samples (x = 0.00–0.09) crystallized in rhombohedral phase; Bi 1- x Gd x FeO 3 samples (x = 0.10–0.20) contained both rhombohedral and orthorhombic phases, while Bi 1- x Gd x FeO 3 (x = 0.30) sample contained only the orthorhombic phase. The structural parameters obtained after Rietveld refinement for single-phase Bi 1- x Gd x FeO 3 ceramic samples and microstructure image analysis were correlated with the results of ferroelectric and magnetic measurements. Bi 1- x Gd x FeO 3 (x = 0.0625, 0.075, 0.09) samples showed improved ferroelectric properties and reduced leakage current density in comparison with undoped BiFeO 3. Gradual increase in Gd content in BiFeO 3 led to enhanced magnetic responses and weak ferromagnetic behavior. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 45
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 138102172
- Full Text :
- https://doi.org/10.1016/j.ceramint.2019.06.162