Effect of Hydrogen on Magnetic Properties of Quaternary Pr2Fe14−xCoxB Compounds

Abstract

The effect of absorbed hydrogen on the structural and magnetic behavior of Pr2Fe14−xCoxB has been investigated. Introduction of hydrogen in the host material reduces the average magnetic moment of the 3d element by ˜ 4 to 7%. Anisotropy fields for all systems studied are significantly reduced upon hydrogenation. Evidence of spin reorientation at temperatures ranging between ˜ 295 K and 496 K for some of the hydrides is observed. Pr2Co14B and its hydride exhibit uniaxial anisotropy at room temperature and at 77 K.

The role of hydrogen in expanding the lattices of these intermetallics and modifying their magnetic properties is discussed.

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References

  1. 1.

    W. E. Wallace, R. S. Craig and V. U. S. Rao, Advances in Chem. Series, No. 186, eds. S. L. Holt, J. B. Milstein and M. Robbins (Am. Chem. Soc, New York, 1980), p. 207.

  2. 2.

    J. H. N. Van Vucht, F. A. Kuijpers and H. C. A. M. Bruning, Philips Res. Rep. 25, 133 (1970).

    Google Scholar 

  3. 3.

    F. Pourarian, W. E. Wallace and S. K. Malik, J. Mag. Mag. Mat. 25, 299 (1982).

    CAS  Article  Google Scholar 

  4. 4.

    F. Pourarian, E. B. Boltich, W. E. Wallace, R. S. Craig and S. K. Malik, ibid., 21, 128 (1980).

    CAS  Google Scholar 

  5. 5.

    E. B. Boltich, F. Pourarian, W. E. Wallace, H. K. Smith and S. K. Malik, Sol. State Commun. 40, 117 (1981).

    CAS  Article  Google Scholar 

  6. 6.

    F. Pourarian, M. Q. Huang and W. E. Wallace, J. Less-Common Met. 120, 63 (1986).

    CAS  Article  Google Scholar 

  7. 7.

    P. Dalmas de Teotier, D. Fruchart, L. Pontonnier, F. Vaillant, P. Wolfers, A. Yaovanc, J. M. D. Coey, R. Fruchart and PH. L’Heritier, ibid, 129 (1986).

    Google Scholar 

  8. 8.

    S. K. Malik, W. E. Wallace and T. Takeshita, Sol. State Commun. 23, 599 (1977).

    CAS  Article  Google Scholar 

  9. 9.

    K. Hardman, J. J. Rhyne, H. K. Smith and W. E. Wallace, J. Appl. Phys. 52, 2070 (1981).

    Article  Google Scholar 

  10. 10.

    F. Pourarian, W. E. Wallace and S. K. Malik, J. Less-Common Met. 83, 95 (1982).

    CAS  Article  Google Scholar 

  11. 11.

    L. Y. Zhang, F. Pourarian and W. E. Wallace, to be published.

  12. 12.

    L. P. Ferreira, R. Guillen, P. Vulleit, A. Yaonanc, D. Fruchart, P. Wolfers, P. L’Heritier and R. Fruchart, J. Mag. Mag. Mat. 53, 145 (1985).

    CAS  Article  Google Scholar 

  13. 13.

    D. Fruchart, P. Wolfers, P. Vulliet, A. Yaoanc, R. Fruchart and P. l’Heritier, in Nd-Fe Permanent Magnets, Their Present and Future Applications. I. V. Mitchell (editor), Elsevier, Amsterdam, 1985, p. 173.

  14. 14.

    A. Pedziwiatr, S. Y. Jiang and W. E. Wallace, J. Mag. Mag. Mat. 62, 29 (1986).

    CAS  Article  Google Scholar 

  15. 15.

    F. Bolzoni, J. M. D. Coey, J. Gavigan, D. Givord, 0. Moze, L. Parati and T. Viadieu, ibid., 67, 123 (1987).

    Google Scholar 

  16. 16.

    S. Y. Jiang, F. Pourarian, E. B. Boltich and W. E. Wallace, presented at Intermag Conf., Japan, 1986.

  17. 17.

    J. F. Herbst and W. B. Yelon, J. Appl. Phys. 57, 2343 (1985).

    CAS  Article  Google Scholar 

  18. 18.

    J. F. Herbst and W. B. Yelon, ibid., 60, 4224 (1986).

    CAS  Google Scholar 

  19. 19.

    E. B. Boltich and W. E. Wallace, Sol. State Commun. 55, 529 (1985).

    CAS  Article  Google Scholar 

  20. 20.

    K. H. J. Buschow, D. B. de Mooij, S. Sinama, R. J. Radwanski and J. J. M. Franse, J. Mag. Mag. Mat. 51, 211 (1985).

    CAS  Article  Google Scholar 

  21. 21.

    F. Pourarian, S. G. Sankar, A. Pedziwiatr, E. B. Boltich and W. E. Wallace, Proc. of this Symposium (1987).

  22. 22.

    J. M. Friedt, A. Vasquez, J. P. Sanchez, P. l’Heritier and R. Fruchart, J. Phys. F. 16, 651 (1986).

    CAS  Article  Google Scholar 

  23. 23.

    J. J. Rhyne, G. E. Fish, S. G. Sankar and W. E. Wallace, J. de Physique, Coll. C5, Suppl. No. 5 40, C5–209 (1979).

    Google Scholar 

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Pourarian, F., Jiang, S.Y. & Wallace, W.E. Effect of Hydrogen on Magnetic Properties of Quaternary Pr2Fe14−xCoxB Compounds. MRS Online Proceedings Library 96, 231 (1987). https://doi.org/10.1557/PROC-96-231

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