grain size; magnetic susceptibility; magnetic transition temperature; nanostructured materials; terbium
Résumé :
[en] This paper reports grain-size-dependent magnetic susceptibility data on nanocrystalline bulk Tb. We find that at small grain size Curie–Weiss behavior is not present for temperatures up to about 80 K above the transition temperature and that the helical antiferromagnetic phase is absent. Possible origins for the suppression of the helix phase in nanoscaled Tb are discussed in terms of internal magnetostatic fields and competing length scales (grain size versus wavelength of the helix phase).
Disciplines :
Physique
Identifiants :
UNILU:UL-ARTICLE-2010-466
Auteur, co-auteur :
Philippi, S.; Technische Physik, Universität des Saarlandes, Deutschland
Markmann, J.; Technische Physik, Universität des Saarlandes, Deutschland
Birringer, R.; Technische Physik, Universität des Saarlandes, Deutschland
MICHELS, Andreas ; Technische Physik, Universität des Saarlandes, Deutschland
Langue du document :
Anglais
Titre :
Grain-size-dependent magnetic susceptibility of nanocrystalline terbium
Date de publication/diffusion :
2009
Titre du périodique :
Journal of Applied Physics
ISSN :
0021-8979
Maison d'édition :
American Institute of Physics, Melville, Etats-Unis - New York
