Synthesis and Study of the Effect of Ba2+ Cations Substitution with Sr2+ Cations on Structural and Optical Properties of Ba2−xSrxZnWO6 Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00)

Alsabah, Yousef A.; AlSalhi, Mohamad S.; Elbadawi, Abdelrahman A.; Mustafa, Eltayeb M.

doi:10.3390/ma10050469

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Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00)

by

Yousef A. Alsabah

^1,2,3,

Mohamad S. AlSalhi

^2,*

,

Abdelrahman A. Elbadawi

¹ and

Eltayeb M. Mustafa

¹

Department of Physics, Faculty of Science and Technology, Al Neelain University, Khartoum 13314, Sudan

²

Research Chair in Laser Diagnosis of Cancers, Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

³

Department of Physics, Faculty of Education and Applied Science, Hajjah University, Hajjah 1729, Yemen

^*

Author to whom correspondence should be addressed.

Materials 2017, 10(5), 469; https://doi.org/10.3390/ma10050469

Submission received: 13 February 2017 / Revised: 20 April 2017 / Accepted: 21 April 2017 / Published: 28 April 2017

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Abstract

The effect of Sr²⁺ substitution on the morphology, crystal structure, and optical properties of double perovskite oxide Ba_2−xSr_xZnWO₆ (x = 0.00, 0.25, 0.50, 0.75, 1.00) were investigated. Scanning electronic microscopy demonstrated that all samples have similar microstructure morphology but differ in the range of grain sizes. X-ray diffraction measurements indicated that these materials crystallize in a (Fm-3m) cubic crystal structure, and also confirmed the tolerance factor. Rietveld analysis revealed that the lattice parameter decreased from 8.11834 to 8.039361 Å when the substitution of Ba²⁺ with Sr²⁺ cations increased from zero to 100%. Fourier transform infrared (FTIR) and Raman spectroscopies displayed a symmetric stretching vibration of WO₆ octahedra at 825 cm⁻¹, and an anti-symmetric stretching mode of WO₆ was observed by FTIR at 620 cm⁻¹. A strong peak at 420 cm⁻¹ was also observed in the Raman spectra and is due to the W–O–W bending vibration modes. UV-Vis diffuse reflectance spectroscopy was carried out for the series, and the band gap energy decreased from 3.27 eV for Ba₂ZnWO₆ to 3.02 and 3.06 eV for Ba_1.75Sr_0.25ZnWO₆ and Ba_1.5Sr_0.5ZnWO₆, respectively. The excitation and emission photoluminescence properties were investigated at room temperature.

Keywords: double perovskite; crystal structure; morphology; molecular structure; UV-visible; diffuse reflectance

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MDPI and ACS Style

Alsabah, Y.A.; AlSalhi, M.S.; Elbadawi, A.A.; Mustafa, E.M. Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00). Materials 2017, 10, 469. https://doi.org/10.3390/ma10050469

AMA Style

Alsabah YA, AlSalhi MS, Elbadawi AA, Mustafa EM. Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00). Materials. 2017; 10(5):469. https://doi.org/10.3390/ma10050469

Chicago/Turabian Style

Alsabah, Yousef A., Mohamad S. AlSalhi, Abdelrahman A. Elbadawi, and Eltayeb M. Mustafa. 2017. "Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00)" Materials 10, no. 5: 469. https://doi.org/10.3390/ma10050469

APA Style

Alsabah, Y. A., AlSalhi, M. S., Elbadawi, A. A., & Mustafa, E. M. (2017). Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00). Materials, 10(5), 469. https://doi.org/10.3390/ma10050469

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Synthesis and Study of the Effect of Ba²⁺ Cations Substitution with Sr²⁺ Cations on Structural and Optical Properties of Ba_2−xSr_xZnWO₆ Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00)

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