Why is iron magnetic?

APR 01, 1978

The long‐sought explanation of the origin of ferromagnetism, which involves interactions both among the bound electrons and between bound and itinerant electrons, will guide the search for new magnetic alloys.

DOI: 10.1063/1.2994993

Mary Beth Stearns

The unravelling of the origin of magnetism in iron, cobalt, nickel and their alloys has been a fascinating subject of study for many years. It is elusive because the structure of the valence electrons in the transition metals is very complex. Only in the last decade has there been a sufficient understanding of this structure to appreciate the crucial features of ferromagnetism. We now know the two conditions the electronic structure of a metal must satisfy for it to be a ferromagnet, and this understanding is helping us synthesize new magnetic alloys.

References

1. C. Herring, Magnetism, volume IV (G. T. Rado, H. Suhl, eds.) Academic, New York (1966).
2. M. A. Ruderman, C. Kittel, Phys. Rev. 96, 99 (1954); https://doi.org/PHRVAO
T. Kasuya, Prog. Theor. Phys. 16, 45 (1956); https://doi.org/PTPKAV
K. Yosida, Phys. Rev. 106, 893 (1957).https://doi.org/PHRVAO
3. M. B. Stearns, Phys. Rev. 129, 1136 (1963); https://doi.org/PHRVAO
M. B. Stearns, 147, 439, (1966) https://doi.org/PHRVAO , Phys. Rev.
M. B. Stearns, Phys. Rev. B 4, 4069 and (1971); https://doi.org/PLRBAQ
M. B. Stearns, 8, 4383 (1973).https://doi.org/PLRBAQ , Phys. Rev. B
4. A. V. Gold, L. Hodges, P. T. Panousis, D. R. Stone, Int. J. Magn. 2, 357 (1971); https://doi.org/IJMNAE
D. R. Baraff, Phys. Rev. 8, 3439 (1973).
5. P. M. Tedrow, R. Meservey, Phys. Rev. B 7, 318 (1973); https://doi.org/PLRBAQ
M. B. Stearns, Jour. of Mag. and Mag. Matl. 5, 167 (1977).https://doi.org/JMMMDC
6. K. J. Duff, T. P. Das, Phys. Rev. B 3, 192 and (1971); https://doi.org/PLRBAQ
S. Wakoh, J. Yamashita, J. Phys. Soc. Japan 21, 1712 (1966); https://doi.org/JUPSAU
R. A. Tawil, J. Callaway, Phys. Rev. B 7, 4242 (1973).https://doi.org/PLRBAQ
7. M. B. Stearns, S. S. Shinozaki, Physica B 86–88, 1195 (1977).https://doi.org/PHBCDQ
8. A. W. Overhauser, Phys. Rev. 128, 1437 (1962).https://doi.org/PHRVAO
9. M. B. Stearns, Phys. Rev. B 13, 1183 (1976).https://doi.org/PLRBAQ
10. M. F. Collins, G. G. Low, Proc. Phys. Soc. Lond. 86, 535 (1965); https://doi.org/PPSOAU
M. F. Collins, G. G. Low, J. Phys. (Paris) 25, 596 (1964); https://doi.org/JOPQAG
M. B. Stearns, L. A. Feldkamp, Phys. Rev. B 13, 1198 (1976).https://doi.org/PLRBAQ

More about the Authors

Mary Beth Stearns. Ford Motor Company, Dearborn, Michigan.