Skip to main content
Log in

Study of magnetic properties of ZnO nanoparticles codoped with Co and Cu

  • Research Paper
  • Published:
Journal of Nanoparticle Research Aims and scope Submit manuscript

Abstract

Here, we report on systematic studies of the magnetic properties of Co and Cu codoped ZnO nanoparticles prepared by sol–gel technique. The effect of hydrogenation and shape on the magnetic properties of Zn0.93Co0.05Cu0.02O nanoparticles is presented. The Zn0.93Co0.05Cu0.02O nanoparticles and well-aligned Zn0.93Co0.05Cu0.02O nanorod array display ferromagnetic behavior at room temperature. Our results demonstrate the influence of shape and hydrogenation on the ferromagnetic properties of Zn0.93Co0.05Cu0.02O nanoparticles at room temperature.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  • Apurba D, Subhendu K (2006) Surfactant-assisted route to synthesize well-aligned ZnO nanorod arrays on sol–gel-derived ZnO thin films. J Phys Chem B 110:14266

    Article  Google Scholar 

  • Bouloudenine M, Viart N (2004) Bulk Zn1−x Co x O magnetic semiconductors prepared by hydrothermal technique. Chem Phys Lett 397:73–76

    Article  ADS  CAS  Google Scholar 

  • Coey MD, Venkatesan M (2005) Donor impurity band exchange in dilute ferromagnetic oxides. Nat Mater 4:173–179

    Article  PubMed  ADS  CAS  Google Scholar 

  • Dielt T, Ohno H (2000) Carrier induced ferromagnetic interactions and transport properties of p-Zn(1-x)Mn x Te epilayers. Science 287:1019

    Article  ADS  Google Scholar 

  • Herng TS, Lau SP (2006) Origin of room temperature ferromagnetism in ZnO:Cu films. J Appl Phys 99:086101

    Article  ADS  Google Scholar 

  • Herng TS, Lau SP (2007) Magnetic anisotropy in the ferromagnetic Cu-doped ZnO nanoneedles. Appl Phys Lett 90:032509

    Article  ADS  Google Scholar 

  • Hsu HS, Huang CA (2006) Evidence of oxygen vacancy enhanced room-temperature ferromagnetism in Co-doped ZnO. Appl Phys Lett 88:242507

    Article  ADS  Google Scholar 

  • Huang LM, Rosa AL (2006) Ferromagnetism in Cu-doped ZnO from first-principles theory. Phys Rev B 74:075206

    Article  ADS  Google Scholar 

  • Jayakumar OD, Gopalakrishnan IK (2006) Magnetic properties of hydrogenated Li and Co doped ZnO nanoparticles. Appl Phys Lett 89:202507

    Article  ADS  Google Scholar 

  • Jayakumar BO, Iyyani KG (2006) Surfactant-assisted synthesis of Co- and Li-doped ZnO nanocrystalline samples showing room-temperature ferromagnetism. Adv Mater 18:1857

    Article  CAS  Google Scholar 

  • Kittilstved KR, Norberg NS (2005) Chemical manipulation of high-TC ferromagnetism in ZnO diluted magnetic semiconductors. Phys Rev Lett 94:147209

    Article  PubMed  ADS  Google Scholar 

  • Kim KJ, Park YR (2002) Spectroscopic ellipsometry study of optical transitions in Zn1–x Co x O alloys. Appl Phys Lett 81:1420–1422

    Article  ADS  CAS  Google Scholar 

  • Lee HJ, Jeong SY (2002) Study of diluted magnetic semiconductor: Co-doped ZnO. Appl Phys Lett 81:4020–4022

    Article  ADS  CAS  Google Scholar 

  • Manivannan A, Dutta P (2006) Nature of magnetism in Co- and Mn-doped ZnO prepared by sol–gel technique. J Appl Phys 99:08M110

    Article  Google Scholar 

  • Park JH, Kim MG (2004) Co-metal clustering as the origin of ferromagnetism in Co-doped ZnO thin films. Appl Phys Lett 84:1338–1340

    Article  ADS  CAS  Google Scholar 

  • Park K, Chadi DJ (2005) Hydrogen-mediated spin–spin interaction in ZnCoO. Phys Rev Lett 94:127204

    Article  PubMed  ADS  CAS  Google Scholar 

  • Pearton SJ, Heo WH (2004) Dilute magnetic semiconducting oxides. Sci Technol 19:R59

    CAS  Google Scholar 

  • Prellier W, Fouchet A (2004) Ferromagnetic Co-doped ZnO thin films grown using pulsed laser deposition from Zn and Co metallic targets. Mater Sci Eng B 109:192–195

    Article  Google Scholar 

  • Sato K, Yoshida HK (2001) Stabilization of ferromagnetic states by electron doping in Fe-, Co- or Ni-doped ZnO. J Appl Phys 40:L334

    Article  CAS  Google Scholar 

  • Sharma P, Gupta A (2003) Ferromagnetism above room temperature in bulk and transparent thin films of Mn-doped ZnO. Nat Mater 2:673–677

    Article  PubMed  ADS  CAS  MathSciNet  Google Scholar 

  • Sudakar C, Thakur JS (2007) Ferromagnetism induced by planar nanoscale CuO inclusions in Cu-doped ZnO thin films. Phys Rev B 75:054423

    Article  ADS  Google Scholar 

  • Venkatesan M, Fitzgerald CB (2004) Anisotropic ferromagnetism in substituted zinc oxide. Phys Rev Lett 93:177206

    Article  PubMed  ADS  CAS  Google Scholar 

  • Ye LH, Freeman AJ (2006) Half-metallic ferromagnetism in Cu-doped ZnO: density functional calculations. Phys Rev B 73:033203

    Article  ADS  Google Scholar 

  • Zhao ZW, Tay BK (2007) Large magnetic moment observed in Co-doped ZnO nanocluster-assembled thin films at room temperature. Appl Phys Lett 90:152502

    Article  ADS  Google Scholar 

Download references

Acknowledgments

This work is supported by National Natural Science Foundation of China (NSFC).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Hua Yang.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Xu, H., Zhao, Q., Yang, H. et al. Study of magnetic properties of ZnO nanoparticles codoped with Co and Cu. J Nanopart Res 11, 615–621 (2009). https://doi.org/10.1007/s11051-008-9444-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11051-008-9444-6

Keywords

Navigation