Structural and Optical Properties of La1−xSrxTiO3+δ
Abstract
:1. Introduction
2. Experiments
3. Results and Discussion
3.1. Phase and Microstructure Characterization
x | Phase | Lattice Parameters | Reported Values |
---|---|---|---|
0 | La2Ti2O7 | a = 7.817 Å, b = 13.051 Å, c = 5.546 Å, α = 90°, β = 98.64°, γ = 90° | a = 7.800 Å, b = 13.01 Å, c = 5.55 Å, α = 90°, β = 98.6°, γ = 90° [11] |
0.1 | SrLa8Ti9O31 | a = 7.779 Å, b = 56.853 Å, c = 5.536 Å, α = 90°, β = 90°, γ = 90° | a = 7.81 Å, b = 57.01 Å, c = 5.533 Å, α = 90°, β = 90°, γ = 90° [17] |
0.25 | SrLa4Ti5O17 | a = 3.918 Å, b = 5.531 Å, c = 31.514 Å, α = 90°, β = 97.12°, γ = 90° | a = 3.982 Å, b = 5.532 Å, c = 31.466 Å, α = 90°, β = 97.14°, γ = 90° [18] |
0.75 | La0.25Sr0.75TiO3 | a = b = c = 3.911 Å, α = β = γ = 90° | a = b = c = 3.905 Å, α = β = γ = 90° [19] |
x | Phase | Crystal Structure | Crystal System |
---|---|---|---|
0 | La2Ti2O7 | Layered structure m = 4 | Monoclinic |
0.05 | La2Ti2O7 | Layered structure m = 4 | Monoclinic |
SrLa8Ti9O31 | Layered structure m = 4.5 | Orthorhombic | |
0.1 | SrLa8Ti9O31 | Layered structure m = 4.5 | Orthorhombic |
0.2 | SrLa4Ti5O17 | Layered structure m = 5 | Monoclinic |
0.25 | SrLa4Ti5O17 | Layered structure m = 5 | Monoclinic |
0.5 | SrLa4Ti5O17 | Layered structure m = 5 | Monoclinic |
La1−ySryTiO3 (0.5 < y < 1) | – | Cubic | |
0.75 | La0.25Sr0.75TiO3 | – | Cubic |
3.2. Reflectivity and Its Effect Factors
3.2.1. Reflectivity
3.2.2. Effect of Phase Structure on the Reflectivity of La1−xSrxTiO3+δ
3.2.3. Effect of Energy Band Structure on the Reflectivity of La1−xSrxTiO3+δ
3.2.4. Effect of Density on the Reflectivity of La1−xSrxTiO3+δ
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Gao, L.; Ma, Z.; Wang, S.; Wang, F.; Yang, C. Structural and Optical Properties of La1−xSrxTiO3+δ. Materials 2014, 7, 4982-4993. https://doi.org/10.3390/ma7074982
Gao L, Ma Z, Wang S, Wang F, Yang C. Structural and Optical Properties of La1−xSrxTiO3+δ. Materials. 2014; 7(7):4982-4993. https://doi.org/10.3390/ma7074982
Chicago/Turabian StyleGao, Lihong, Zhuang Ma, Song Wang, Fuchi Wang, and Cai Yang. 2014. "Structural and Optical Properties of La1−xSrxTiO3+δ" Materials 7, no. 7: 4982-4993. https://doi.org/10.3390/ma7074982