| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1627 - C8-1628 | |
| DOI | https://doi.org/10.1051/jphyscol:19888743 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1627-C8-1628
DOI: 10.1051/jphyscol:19888743
Department of Physics, Rice University, Houston, TX 77251, U.S.A.
J. Phys. Colloques 49 (1988) C8-1627-C8-1628
DOI: 10.1051/jphyscol:19888743
SURFACE-ENHANCED MAGNETIC ORDER AND CRITICAL BEHAVIOR OF Tb(0001) FILMS ON W(110)
C. Rau et C. JinDepartment of Physics, Rice University, Houston, TX 77251, U.S.A.
Abstract
The magnetic properties of uncoated, epitaxial Tb(0001) films on W(110) substrates are studied using electron capture spectroscopy. The topmost layer orders ferromagnetically below a surface Curie temperature TCs = 249.96 ± 0.02 K, which lies above the bulk Curie and Néel temperatures TCb=220 K and TNb = 228 K. Near TCs, novel critical behaviour is observed, suggesting the existence of strong surface anisotropies.