Optical response and magnetic characteristic of samarium doped zinc phosphate glasses containing nickel nanoparticles

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:393

Article

Azmi, Siti Amlah M.¹  Sahar, M. R.¹ 

[1] Univ Teknol Malaysia, Fac Sci, Dept Phys, Adv Opt Mat Res Grp, Skudai 81310, Johor, Malaysia

关键词: Zinc phosphate;    Nickel nanoparticles;    Photoluminescence;    Hysteresis curve;    Samarium;   

DOI  :  10.1016/j.jmmm.2015.06.001

来源: Elsevier

【 摘 要 】

A magnetic glass of composition 40Zn0-(58 x)P2O5-1Sm(2)O(3)-xNiO, with x-0.0,1.0, 1.5 and 2.0 mol% is prepared by melt-quenching technique. The glass is characterized by X-ray diffraction, high-resolution transmission electron microscope (HRTEM), photoluminescence (PL) spectroscopy and vibrating sample magnetometer (VSM) analysis. The X-rays diffraction confirms the amorphous nature of the glass while the HRTEM analysis reveals the presence of nickel nanoparticles in the glass samples. High-resolution TEM reveals that the lattice spacing of nickel nanoparticles is 0.35 nm at (100) plane. Photoluminescence emission shows the existence of four peaks that correspond to the transition from the upper level of (4)G(5/2) to the lower level of H-6(5/2), H-6(7/2), H-6(9/2), and H-6(11/2). It is observed that all peaks experience significant quenching effect with the increasing concentration of nickel nanoparticles, suggesting a strong energy transfer from excited samarium ions to the nickel ions. The glass magnetization and susceptibility at 12 kOe a[ room [emperature are found to be in [he range of (3.87 +/- 0.17 x 10(-2)-719 +/- 0.39 x 10(-2)) emu/g and (3.24 +/- 0.16 x 10(-6)-5.99 +/- 0.29 x 10(-6)) emu/Oe g respectively. The ob[ainecl hysteresis curve ind ica[es that [he glass samples are paramagnetic materials. The studied glass can be further used towards the development of magneto-optical functional glass. (C) 2015 Elsevier B.V. All rights reserved.

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