Skip to main content
SpringerLink
Log in

Hydrogen absorption effects in the Zr(Fe0.5Cr0.5)2 compound

  • Published:
Hyperfine Interactions Aims and scope Submit manuscript

Abstract

Zr(Fe0.5Cr0.5)2 Laves phase samples have been made to absorb different hydrogen amounts up to 3.3 H/f.u. XRD showed all ZrFeCrH y samples to have the C14 structure and, for 0 < y < 2.6, to be composed of a H-poor α-phase and a H-rich β-phase having different c/a ratios. Both phases could be distinguished in the Mössbauer spectra. The β-phase fraction was determined both from X-ray and Mössbauer analysis, with excellent agreement. β-phase lattice constants and hyperfine parameters vs. y exhibited a small jump at y ≈ 1.75, suggesting a phase transition. Mössbauer spectra of ZrFeCrH3.3 in the 78–350 K range revealed that, for Fe at the 6h site, quadrupole splitting and linewidth increased for decreasing temperature. These effects were attributed to H atomic jump diffusion, and an activation energy of ≈70 meV was estimated.

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

Access this article

Log in via an institution

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

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. D. Shaltiel, I. Jacob and D. Davidov, J. Less-Common Met. 53 (1977) 117.

    Article  Google Scholar 

  2. K. Kanematsu, J. Phys. Soc. Japan 29 (1970) 864.

    Article  Google Scholar 

  3. J.A.H. Coaquira, H.R. Rechenberg and J. Mestnik Filho, J. Alloys Compounds 288 (1999) 42.

    Article  Google Scholar 

  4. J.A.H. Coaquira, H.R. Rechenberg and J. Mestnik Filho, J. Magn. Magn. Mater. 196/197 (1999) 677.

    Article  ADS  Google Scholar 

  5. O. Canet, M. Latroche, F. Bourée-Vigneron and A. Percheron-Guégan, J. Alloys Compounds 210 (1994) 129.

    Article  Google Scholar 

  6. K. Negita, N. Nakamura and H. Chihara, Chem. Phys. Lett. 63 (1979) 187.

    Article  ADS  Google Scholar 

  7. F.E. Wagner and G. Wortmann, in: Hydrogen in Metals I, eds. G. Alefeld and J. Völkl (Springer, Berlin, 1978) p. 145.

    Google Scholar 

  8. A. Heidemann, G. Kaindl, D. Salomon, H. Wipf and G. Wortmann, Phys. Rev. Lett. 36 (1976) 213.

    Article  ADS  Google Scholar 

  9. A.V. Skripov, M.Yu. Belyaev and A.P. Stepanov, Solid State Commun. 78 (1991) 909.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970, São Paulo, Brazil

    J.A.H. Coaquira & H.R. Rechenberg

  2. Instituto de Pesquisas Energéticas e Nucleares, CP 11049, 05422-970, São Paulo, Brazil

    J. Mestnik Filho

Authors
  1. J.A.H. Coaquira
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. H.R. Rechenberg
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Mestnik Filho
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Coaquira, J., Rechenberg, H. & Mestnik Filho, J. Hydrogen absorption effects in the Zr(Fe0.5Cr0.5)2 compound. Hyperfine Interactions 126, 205–210 (2000). https://doi.org/10.1023/A:1012673618649

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1012673618649

Keywords

Search

Navigation