Magnetic Behaviour in Erbium Doped Phosphate Glass Embedded With Cobalt Nanoparticles
Nur Aina Mardia Adnan, Md Rahim Sahar and Md Supar Rohan
Advance Optical Material Research Group, Physics Department, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Johor, Malaysia
Considerable interest on magnetic nanoparticles (NPs) embedded rare earth doped glasses are expanding rapidly. A series of Er3+ doped phosphate glass with the composition of (69-x)P2O5-10MgO-20ZnCl2-1Er2O3-(x)CoO with 0 ≤ x ≤ 2.0 mol% embedded with CoO NPs are prepared using melt quenching method and the influence of CoO NPs on the glass samples are examined. Samples are characterized using X–ray diffraction (XRD) which reveals the amorphous nature of the glass. The physical and magnetic properties were investigated. The samples showed magnetic behavior, with magnetization increased with increasing the CoO concentration but decreased at 1.5% concentration. Saturation Magnetization (Mr), Remanent Magnetization (Mr), Coercivity (Hc) and Squareness (Mr/Ms) of the samples are also determined. According to the results obtained, which closely correlates with the CoO content, the glasses can be classified as antferromagnetic.
Keywords: Phosphate glass; cobalt nanoparticles; magnetic properties;
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