Thickness-dependent magnetic properties of oxygen-deficient EuO

Autor:	Barbagallo, M., Stollenwerk, T., Kroha, J., Steinke, N. -J., Hine, N. D. M., Cooper, J. F. K., Barnes, C. H. W., Ionescu, A., Monteiro, P. M. D. S., Kim, J. -Y., Ziebeck, K. R. A., Kinane, C. J., Dalgliesh, R. M., Charlton, T. R., Langridge, S.
Rok vydání:	2011
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 84, 075219 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.84.075219
Popis:	We have studied how the magnetic properties of oxygen-deficient EuO sputtered thin films vary as a function of thickness. The magnetic moment, measured by polarized neutron reflectometry, and the Curie temperature are found to decrease with reducing thickness. Our results indicate that the reduced number of nearest neighbors, band bending and the partial depopulation of the electronic states that carry the spins associated with the 4f orbitals of Eu are all contributing factors in the surface-induced change of the magnetic properties of EuO$_{1-x}$. Comment: 4 pages, 3 figures, 1 table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1104.4363 Zobrazit plný text záznamu View this record from Arxiv