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Stability and Hydrogenation of “Bare” Gadolinium Nanoparticles†

  1. I. Aruna1,
  2. B. R. Mehta,
  3. L. K. Malhotra1,
  4. S. M. Shivaprasad2

Article first published online: 13 JAN 2005

DOI: 10.1002/adfm.200400097

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 15, Issue 1, pages 131–137, January, 2005

Additional Information

How to Cite

Aruna, I., Mehta, B. R., Malhotra, L. K. and Shivaprasad, S. M. (2005), Stability and Hydrogenation of “Bare” Gadolinium Nanoparticles. Adv. Funct. Mater., 15: 131–137. doi: 10.1002/adfm.200400097

Author Information

  1. 1

    Thin Film Laboratory, Department of Physics, Indian Institute of Technology, Delhi, New Delhi 110 016, India

  2. 2

    Surface Physics Group, National Physical Laboratory, Delhi, New Delhi 110 012, India

  1. †

    I. Aruna is grateful to the University Grants Commission (UGC), India, for providing the Senior Research Fellowship (SRF) for carrying out this work.

Publication History

  1. Issue published online: 13 JAN 2005
  2. Article first published online: 13 JAN 2005
  3. Manuscript Accepted: 19 AUG 2004
  4. Manuscript Received: 5 MAR 2004

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Keywords:

  • Core–shell particles;
  • Gadolinium, nanoparticles;
  • Nanoparticles, metal

Abstract

Gadolinium nanoparticles, deposited via an inert gas evaporation method, show improved stability towards oxidation and it is therefore possible to carry out an ex-situ investigation on “bare” Gd nanoparticles, i.e., in the absence of a protective Pd layer, for the first time. A size-induced structural transformation from hexagonal close packing to the higher-symmetry face-centered cubic structure is observed. The important observation of hydrogen–Gd-nanoparticle interaction at room temperature and atmospheric pressure, without a Pd catalytic layer, makes Gd nanoparticles a potential candidate for hydrogen-sensing, switching, and storage applications.

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