Structural, vibrational and photoluminescence properties of Sr{sub (1-x)}Pb{sub x}MoO{sub 4} solid solution synthesized by solid state reaction

Journal Article · Fri Jul 15 04:00:00 EDT 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2016.03.015· OSTI ID:22581578

Hallaoui, A.; Taoufyq, A. ^[1]; Arab, M. ^[1]; Bakiz, B.; Benlhachemi, A.; Bazzi, L. ^[2]; Valmalette, J-C.; Villain, S.; Guinneton, F. ^[1]

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1. IM2NP, UMR CNRS 7334, University of Toulon, BP20132, 83957 La Garde (France)
2. LME, Faculty of Sciences, University Ibn Zohr, 80000 Agadir (Morocco)

Highlights: • The solid solution Sr{sub (1-x)}Pb{sub (x)}MoO{sub 4} is characterized by X-ray diffraction. • Raman spectroscopy confirm that the solid solution is disordered. • Photoluminescence experiments are carried out under X-ray excitation. • Emission bands can be decomposed into four components between 2.1 and 2.9 eV. • The intensities of emission bands reach a maximum for 0.1 < x < 0.4. - Abstract: In this paper, strontium lead molybdate Sr{sub 1-x}Pb{sub x}MoO{sub 4} polycrystalline samples with 0 ≤ x ≤ 1 were prepared by solid state preparation method at 1000 °C. These materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and micro-Raman spectroscopy. Their photoluminescence responses were analyzed under X-ray excitation. Rietveld refinements indicate that all the materials present a scheelite-type tetragonal structure. Micro-Raman spectra confirmed the formation of the solid solution with a specific effect due to Sr-O-Mo and Pb-O-Mo links in the scheelite structure. SEM images showed modifications in the shapes and grain sizes as x increased. Broad photoluminescent emission bands were observed in the energy range 2.1–2.9 eV. The emission bands were decomposed into four gaussian components. The intensities of all components presented a strong maximum in the composition range 0.1 < x < 0.4.

• OSTI ID: 22581578
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 79; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONCENTRATION RATIO
EMISSION SPECTROSCOPY
EXCITATION
GRAIN SIZE
LEAD COMPOUNDS
MODIFICATIONS
MOLYBDATES
PHOSPHORS
PHOTOLUMINESCENCE
POLYCRYSTALS
RAMAN SPECTRA
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SOLID SOLUTIONS
SOLIDS
STRONTIUM COMPOUNDS
TETRAGONAL LATTICES
X-RAY DIFFRACTION