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Electrical and optical properties of SrTiO₃ nanopowders: Effect of different dopants Ba and Ag

Mahdi Ghasemifard

Nanotechnology Laboratory, Esfarayen University of Technology, Esfarayen 9661998195, Iran

E-mail Address: [email protected]

Corresponding author.

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Misagh Ghamari

Nanotechnology Laboratory, Esfarayen University of Technology, Esfarayen 9661998195, Iran

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, and

Meysam Iziy

Nanotechnology Laboratory, Esfarayen University of Technology, Esfarayen 9661998195, Iran

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https://doi.org/10.1142/S0217984916502079Cited by:2 (Source: Crossref)

Abstract

Using strontium–titanium salts precursor, nanopowders (STO-based-NPs) were successfully synthesized by controlled gel-combustion method. Citric and nitric acids in an optimum ratio were used as the fuel and oxidizer agents, respectively. After heat treatment at 850 $^{\circ}$ C, the crystalline structure of the products was investigated by X-ray diffraction. The effects of Ba and Ag dopants on particle size distribution were discussed by transmission electron microscopy (TEM). The optical and dielectric parameters such as energy band gap $(E_{g})$ , real and imaginary parts of refractive index, dielectric function and energy loss function of nanopowders have been investigated by UV–Vis and FTIR spectra. The band gap of SrTiO₃ increased with increasing Ba, Ag and Ba–Ag. Different atomic radii of dopants are responsible for changing optical and dielectric parameters due to the altered orbital configuration of the lattice structure.

Keywords:

References

1. S. Hayward and E. Salje, Phase Transit. 68(3) (1999) 501–522. Crossref, Web of Science, Google Scholar
2. R. Loetzsch et al., Appl. Phys. Lett. 96(7) (2010) 1901. Crossref, Web of Science, Google Scholar
3. T. Hara, T. Ishiguro, N. Wakiya and K. Shinozaki, Jpn. J. Appl. 47(9S) (2008) 7486. Crossref, Web of Science, ADS, Google Scholar
4. R. Konta, T. Ishii, H. Kato and A. Kudo, J. Phys. Chem. B 108(26) (2004) 8992–8995. Crossref, Web of Science, Google Scholar
5. S. Zollner, A. A. Demkov, R. Liu, P. L. Fejes, R. B. Gregory, P. Alluri, J. A. Curless, Z. Yu, J. Ramdani, R. Droopad and T. E. Tiwald, J. Vac. Sci. Technol. B 18(4) (2000) 2242–2254. Crossref, Web of Science, Google Scholar
6. O. F. Schirmer, A. Forster, H. Hesse, M. Wohlecke and S. Kapphan, J. Phys. C: Solid State Phys. 17(7) (1984) 1321. Crossref, Web of Science, ADS, Google Scholar
7. W. Wei, Y. Dai, M. Guo, L. Yu and B. Huang, J. Phys. Chem. C 113(33) (2009) 15046–15050. Crossref, Web of Science, Google Scholar
8. W. Wunderlich, H. Ohta and K. Koumoto, Phys. B: Condens. Matter 404(16) (2009) 2202–2212. Crossref, Web of Science, ADS, Google Scholar
9. K. Shirai and K. Yamanaka, J. Appl. 113(5) (2013) 053705. Crossref, Web of Science, ADS, Google Scholar
10. J. Smith, R. Dolloff and K. Mazdiyasni, J. Am. Ceram. Soc. 53(2) (1970) 91–95. Crossref, Google Scholar
11. A. Komarov, I. Parkin and M. Odlyha, J. Mater. Sci. 31(19) (1996) 5033–5037. Crossref, Web of Science, ADS, Google Scholar
12. S. Fuentes, R. A. Zarate, E. Chavez, P. Munoz, D. Díaz-Droguett and P. Leyton, J. Mater. Sci. 45(6) (2010) 1448–1452. Crossref, Web of Science, ADS, Google Scholar
13. M. Ghasemifard, Eur. Phys. J. Appl. Phys. 54(02) (2011) 20701. Crossref, Web of Science, ADS, Google Scholar
14. M. Ghasemifard, M. E. Abrishami and M. Iziy, Results Phys. 5 (2015) 309–313. Crossref, Web of Science, ADS, Google Scholar
15. Y. A. Abramov, V. G. Tsirelson, V. E. Zavodnik, S. A. Ivanov and I. D. Brown, Acta Crystallogr. B: Struct. Sci. 51(6) (1995) 942–951. Crossref, Web of Science, ADS, Google Scholar
16. L. A. Nafie, Vibrational Optical Activity: Principles and Applications (John Wiley & Sons, New York, 2011). Crossref, Google Scholar
17. A. Biswas, D. Milovic and R. Kohl, Inverse Probl. Sci. Eng. 20(2) (2012) 227–232. Crossref, Web of Science, Google Scholar
18. T. Xian, H. Yang, J. F. Dai, Z. Q. Wei, J. Y. Ma and W. J. Feng, Mater. Lett. 65(21) (2011) 3254–3257. Crossref, Web of Science, Google Scholar
19. Y. Diamant, S. G. Chen, O. Melamed and A. Zaban, J. Phys. Chem. B 107(9) (2003) 1977–1981. Crossref, Web of Science, Google Scholar
20. N. Matsumoto, T. Fujii, K. Kageyama, H. Takagi, T. Nagashima and M. Hangyo, Jpn. J. Appl. Phys. 48(9S1) (2009) 09KC11. Google Scholar
21. S. Y. Hamh, J. W. Han, T. H. Kim and J. S. Lee, J. Korean Phys. Soc. 63(2) (2013) 241–245. Crossref, Web of Science, Google Scholar
22. A. Kuzmenk, Rev. Sci. Instrum. 76(8) (2005) 083108. Crossref, Web of Science, Google Scholar
23. D. A. Crandles, B. Nicholas, C. Dreher, C. C. Homes, A. W. McConnell, B. P. Clayman, W. H. Gong and J. E. Greedan, Phys. Rev. B 59(20) (1999) 12842. Crossref, Web of Science, ADS, Google Scholar
24. K. M. Pitman, A. M. Hofmeister, A. B. Corman and A. K. Speck, Astron. Astrophys. 483(2) (2008) 661–672. Crossref, Web of Science, ADS, Google Scholar