10.1186/2228-5326-2-31

Effect of doping concentration on absorbance, structural, and magnetic properties of cobalt-doped ZnO nano-crystallites

Show Details XML HTML PDF
  • Muhammad Ahsan Shafique1,
  • Saqlain A Shah*2,
  • Muhammad Nafees1,
  • Khalid Rasheed3,
  • Riaz Ahmad1,
  1. Department of Physics, GC University, Lahore, 54000, PK
  2. Department of Physics, Forman Christian College (University), Lahore, 54000, PK
  3. Department of Physics, GC University, Lahore, 54000, PK Pakistan Council of Scientific and Industrial Research (PCSIR), Lahore, 54000, PK
Cover Image

Published in Issue 2012-10-29

How to Cite

Shafique, M. A., Shah, S. A., Nafees, M., Rasheed, K., & Ahmad, R. (2012). Effect of doping concentration on absorbance, structural, and magnetic properties of cobalt-doped ZnO nano-crystallites. International Nano Letters, 2(1 (December 2012). https://doi.org/10.1186/2228-5326-2-31
Crossref
Scopus
Google Scholar
Europe PMC

HTML views: 42

PDF views: 114

Abstract

Abstract Controlled conduction of magnetic spins is desired for data processing in modern spintronic devices. Transition metal-doped ZnO is a potential candidate for this purpose. We studied the effects of cobalt doping on structural, absorbance, and magnetic properties of ZnO nano-particles. Different compositions (Zn 0.99 Co 0.1 O, Zn 0.97 Co 0.3 O, and Zn 0.95 Co 0.5 O) of cobalt-doped ZnO were fabricated using metallic chlorides by co-precipitation method. XRD revealed standard ZnO wurtzite crystal structure without lattice distortion due to impurities but showed presence of additional phases at higher doping ratios. Fourier transformed infrared spectroscopy also confirmed the standard ZnO profiles at lower doping ratios but additional phases at higher doping. Vibrating sample magnetometer showed soft ferromagnetic behavior for low impurity samples and harder ferromagnetic behavior for higher doping at room temperature. A simultaneous differential scanning calorimetry/thermo gravimetric analysis was performed to study the phase variations during crystallization.

Keywords

  • Cobalt-doped ZnO,
  • DMS,
  • FTIR,
  • VSM,
  • Crystal growth,
  • Metallic chlorides
HTML PDF

References

  1. Bunn (1935) The lattice dimensions of zinc oxide https://doi.org/10.1088/0959-5309/47/5/307
  2. Damen et al. (1966) Raman effect in zinc oxide https://doi.org/10.1103/PhysRev.142.570
  3. Decremps et al. (2002) High-pressure Raman spectroscopy study of wurtzite ZnO https://doi.org/10.1103/PhysRevB.65.092101
  4. Özgür et al. (2003) A comprehensive review of ZnO materials and devices https://doi.org/10.1063/1.1992666
  5. Dietl et al. (2000) Zener model description of ferromagnetism in zinc-blende magnetic semiconductors https://doi.org/10.1126/science.287.5455.1019
  6. Ohno et al. (1999) Electrical spin injection in a ferromagnetic semiconductor heterostructure https://doi.org/10.1038/45509
  7. Pearton et al. (2003) Magnetization and structural studies of Mn-doped ZnO nanoparticles: prepared by reverse micelle method https://doi.org/10.1063/1.1517164
  8. Wang (2001) Ultrafine ZnO powder prepared by precipitation/mechanical milling (pp. 3273-3276) https://doi.org/10.1023/A:1017902923289
  9. Martiner et al. (2004) Ferromagnetism in Co-doped ZnO particles prepared by vaporization-condensation in a solar image furnace (pp. 168-170)
  10. Wang et al. (2003) Low temperature synthesis of ZnO nanoparticles by solid state pyrolytic reaction (pp. 11-15) https://doi.org/10.1088/0957-4484/14/1/303
  11. Caffarena and Capitaneo (2006) Preparation of electrodeposited cobalt nanowires 9(2) (pp. 205-208) https://doi.org/10.1590/S1516-14392006000200017
  12. Xue et al. (2011) Effect of Mn-doping on temperature dependent magnetic properties of L10FeMnPt https://doi.org/10.1063/1.3561445
  13. Yang and Nie (2009) Preparation and characterization of Co-doped ZnO nanomaterials (pp. 279-282) https://doi.org/10.1016/j.matchemphys.2008.09.017
  14. Jayakumar and Gopalakrishnan (2007) Surfactant induced enhanced room temperature ferromagnetism in Zn0.96 Mn0.03 Li0.01O nanoparticles prepared by solid state pyrolytic reaction (pp. 315-320) https://doi.org/10.1016/j.jcrysgro.2007.06.027
  15. Kim et al. (2002) Synthesis and crystallization of fine SiC-Si3N4 composite powders by a vapor phase reaction 3(3) (pp. 146-149)
  16. Sui et al. (2005) White-light emission of polyvinyl alcohol/ZnO hybrid nanofibers prepared by electrospinning (pp. 113-115) https://doi.org/10.1063/1.2048808
  17. Byrappa et al. (2006) Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties (pp. 1355-1362) https://doi.org/10.1007/s10853-006-7341-x
  18. Sharma et al. (2009) Effect of iron doping concentration on magnetic properties of ZnO nanoparticles (pp. 2587-2591) https://doi.org/10.1016/j.jmmm.2009.03.043
  19. Ghule et al. (2006) Preparation and characterization of ZnO nanoparticles coated paper and its antibacterial activity study (pp. 1034-1041) https://doi.org/10.1039/b605623g
  20. Ding et al. (2001) Ultrafine ZnO powder prepared by precipitation/mechanical milling (pp. 3273-3276) https://doi.org/10.1023/A:1017902923289