Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-29T07:27:36.044Z Has data issue: false hasContentIssue false
  • English
  • Français

Spin Glassiness and Ferromagnetism in Disordered Ni-Mn Alloys

Published online by Cambridge University Press:  15 February 2011

James S. Kouvel
James S. Kouvel*
Affiliation:
Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60680, USA
Get access

Abstract

From magnetic measurements, the alloy Ni78Mn22 is found to undergo a field-induced transition from spin glassiness to ferromagnetism at a critical field that decreases from ∼140 Oe to zero as the temperature is raised from 4.2 K to 40 K, the ferromagnetic Curie point being ∼270 K. The alloy Ni74Mn26 is found to transform at 80 K from a spin glass to a state of infinite initial susceptibility but no spontaneous magnetization and to remain so up to 155 K, where it becomes paramagnetic. The spin-glass properties of Ni78Mn22 below 40 K and of Ni74Mn26 below 80 K include displaced hysteresis loops produced by cooling in a field. The changes in the hysteresis loops upon subsequent warming correspond to a gradual conversion of a unidirectional anisotropy to a uniaxial anisotropy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 19: Symposium E – Alloy Phase Diagrams , 1982 , 353
Copyright
Copyright © Materials Research Society 1983

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Kouvel, J. S., Graham, C. D., and Jacobs, I. S., J. Physique Rad. 20, 198 (1959);CrossRefGoogle Scholar
Kouvel, J. S. and Graham, C. D., J. Phys. Chem. Solids 11, 220 (1959).Google Scholar
2. Satoh, T., Goldfarb, R. B., and Patton, C. E., Phys. Rev. B 18, 3684 (1978);Google Scholar
Goldfarb, R. B. and Patton, C. E., Phys. Rev. B 24, 1360 (1981).CrossRefGoogle Scholar
3. Cable, J. W. and Child, H. R., Phys. Rev. B 10, 4607 (1974);CrossRefGoogle Scholar
Hicks, T. J. and Moze, O., J. Phys. F 11, 2633 (1981).CrossRefGoogle Scholar
4. Toulouse, G., Commun. Phys. 2, 115 (1977).Google Scholar
5. Shull, R. D., Okamoto, H., and Beck, P. A., Solid State Commun. 20, 863 (1976) on Fe-Al;Google Scholar
Verbeek, B. H., Nieuwenhuys, G. J., Stocker, H., and Mydosh, J. A., Phys. Rev. Lett. 40, 586 (1978) on Pd-Fe-Mn;Google Scholar
Maletta, H. and Convert, P., Phys. Rev. Lett. 42, 108 (1979) on (Eu,Sr)S;CrossRefGoogle Scholar
Yeshurun, Y., Salamon, M. B., Rao, K. V., and Chen, H. S., Phys. Rev. Lett. 45, 1366 (1980) on amorphous (Fe,Mn)75Pl6B6Al3;Google Scholar
Fincher, C. R., Shapiro, S. M., Palumbo, A. H., and Parks, R. D., Phys. Rev. Lett. 45, 474 (1980) on Fe-Cr;Google Scholar
Dublon, G., Solid State Commun. 33, 1195 (1980) on amorphous (Pd,Fe)82Si18;CrossRefGoogle Scholar
Crane, S. and Claus, H., Phys. Rev. Lett. 46, 1693 (1981) on Au-Fe.CrossRefGoogle Scholar
6. Aitken, R. G., Cheung, T. D., Kouvel, J. S., and Hurdequint, H., J. Magn. Magn. Mat. 30, 1 (1982).Google Scholar
7. In Ref. 1, the Ni-Mn alloy compositions are given more precisely as 21.6, 26.5, and 31.1 at.% Mn.Google Scholar
8. Tange, H., Tokunaga, T., and Goto, M., J. Phys. Soc. Japan 45, 105 (1978).Google Scholar
9. Gabay, M. and Toulouse, G., Phys. Rev. Lett. 47, 201 (1981);Google Scholar
Sompolinsky, H., Phys. Rev. Lett. 47, 935 (1981).Google Scholar
10. Kouvel, J. S., J. Phys. Chem. Solids 21, 57 (1961);Google Scholar
Beck, P. A., Prog. Mater. Sci. 23, 1 (1978).Google Scholar
11. Knitter, R. W., Kouvel, J. S., and Claus, H., J. Magn. Magn. Mat. 5, 356 (1977).Google Scholar
12. Tholence, J. L. and Tournier, R., J. Physique 35, C4–229 (1974).Google Scholar
13. These atomic moment values were determined from neutron diffraction data on ordered Ni3Mn by Shull, C. G. and Wilkinson, M. K. [Phys. Rev. 97, 304 (1955)].Google Scholar
14. Kouvel, J. S., J. Phys. Chem. Solids 24, 795 (1963).Google Scholar
15. Fert, A. and Levy, P. M., Phys. Rev. Lett. 44, 1538 (1980) and Phys. Rev. B 23, 4667 (1981).Google Scholar
16. The magnetic properties of the second Ni74Mn26 sample were discussed by Hurdequint, H., Hippert, F., and Kouvel, J. S. at the 3IM3 Conf., Montreal (July 1982). This sample had been used for an electron spin resonance study reported on later by H. Hurdequint, J. S. Kouvel, and P. Monod at the Internat. Conf. on Magnetism, Kyoto (Sept. 1982).Google Scholar