Please use this identifier to cite or link to this item: https://doi.org/10.1142/S0217979209062955
Title: The GD concentration dependence of the magnetic properties of room temperature ferromagnetic ZNO: GD semiconductor
Authors: Lim, S.T. 
Song, W.D.
Teo, K.L. 
Liew, T.
Chong, T.C.
Keywords: Gadolinum
Pulsed laser deposition
ZnO
Issue Date: 10-Jul-2009
Citation: Lim, S.T., Song, W.D., Teo, K.L., Liew, T., Chong, T.C. (2009-07-10). The GD concentration dependence of the magnetic properties of room temperature ferromagnetic ZNO: GD semiconductor. International Journal of Modern Physics B 23 (17) : 3550-3555. ScholarBank@NUS Repository. https://doi.org/10.1142/S0217979209062955
Abstract: We present structural and magnetic properties of ZnO films doped with rare-earth Gd ions at various concentrations, achieved by ion implantation technique and pulsed laser deposition (PLD) on ZnO (0001) single crystals and sapphire. X-ray diffraction shows Gd doping in ZnO and crystal quality degrades with increasing Gd concentration. Magnetization as a function of temperature revealed a positive magnetization at 305 K and a concave trend was observed for all samples for both implanted and PLD grown samples. The highest saturation magnetization was achieved for Gd concentration of x = 7.9 % (0.7 B/Gd) and at dosage of 9.0 × 1015 cm-2 (2.6 B/Gd) for the PLD grown and implanted samples, respectively. We believe that the Gd ion solubility limit in the implanted and PLD grown samples, of around 3% and 7.9%, respectively, are reached. © 2009 World Scientific Publishing Company.
Source Title: International Journal of Modern Physics B
URI: http://scholarbank.nus.edu.sg/handle/10635/84287
ISSN: 02179792
DOI: 10.1142/S0217979209062955
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