Journal
APPLIED SURFACE SCIENCE
Volume 490, Issue -, Pages 260-265Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2019.06.086
Keywords
Rare earth; Erbium; Z scan technique; Strontium
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Funding
- MNRE, Government of India [31/03/2014-15/PVSE-RD]
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Er3+ doped SrMoO4 nanostructures with various concentration of Er3+ have been synthesized by chemical precipitation method. The as prepared nanostructures were characterized by X-ray diffraction (XRD), Raman, Fourier transform infrared (FTIR), UV-Visible spectroscopy, Vibrating sample magnetometer (VSM) and Transmission Electron microscopy (TEM). XRD analysis confirmed that the particles crystallize in a scheelite-type tetragonal structure. The particle sizes were found to be 20-40 nm as calculated from TEM. VSM measurements have revealed the ferromagnetic nature of the nanostructures. The third order nonlinear optical behavior was studied by a Z-scan technique using a diode pumped continuous wave Nd:YAG laser at 532 nm. Open and closed aperture results reveal that the observed nonlinearity of the nanostructures is attributed to reverse saturable absorption and self-defocusing nature. The calculated nonlinear component of refractive index, absorption coefficient and magnitude of nonlinear susceptibility were found to be in the order of 10(-9) (cm(2)/W), 10(-4) (cm/W) and 10(-6) esu, respectively.
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