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Journal of Nanoparticle Research

, Volume 10, Issue 1, pp 53–58 | Cite as

Air stability and magnetic properties of GdN, TiN, and (Gd,Ti)N nanoparticles

  • Ping-Zhan SiEmail author
  • C. J. Choi
  • O. Tegus
  • E. Brück
  • D. Y. Geng
  • Z. D. Zhang
Research Paper

Abstract

GdN, TiN, and (Gd,Ti)N nanoparticles were prepared by arc evaporating Gd, Ti, and Gd-Ti alloys in N2, respectively. Most of these nanoparticles show narrow size distribution with average diameter of 20 nm. Shell/core structure was observed in the (Gd,Ti)N nanoparticles, in which the shell was formed by surface reaction with air. (Gd,Ti)N nanoparticles are more stable than GdN nanoparticles in air due partially to the formation of the protective shell. The Curie temperature of GdN nanoparticles is lower than that of the bulk GdN. Both GdN and (Gd, Ti)N nanoparticles are difficult to reach magnetic saturation and show zero coercivity.

Keywords

Gadolinium nitride Nanoparticles Stability Magnetic properties Shell/core structure 

Notes

Acknowledgments

The work was supported by the National Natural Science Foundation of China (Grants Nos. 50332020, and 50171070), the Center for Nanostructured Materials Technology under the Korea ‘21st Century Frontier R&D Programs’ (Grant No. 06K1501-00310), and the exchange program between China and the Netherlands.

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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • Ping-Zhan Si
    • 1
    • 4
    Email author
  • C. J. Choi
    • 2
  • O. Tegus
    • 3
  • E. Brück
    • 3
  • D. Y. Geng
    • 1
  • Z. D. Zhang
    • 1
  1. 1.Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Centre for Materials PhysicsChinese Academy of SciencesShenyangChina
  2. 2.Korea Institute of Machinery and MaterialsChangwonRepublic of Korea
  3. 3.Van der Waals Zeeman InstituteUniversity of AmsterdamAmsterdamThe Netherlands
  4. 4.Department of PhysicsChina Jiliang UniversityHangzhouChina

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