Determination of the magnetization distribution in Cr2O3using spherical neutron polarimetry

Autor:	F. Tasset, E Lelièvre-Berna, J B Forsyth, P.J. Brown
Rok vydání:	2002
Předmět:	Magnetization Atomic orbital Magnetic moment Condensed matter physics Magnetic structure Chemistry General Materials Science Neutron Electron Condensed Matter Physics Spin (physics) Ion
Zdroj:	Journal of Physics: Condensed Matter. 14:1957-1966
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/14/8/323
Popis:	The magnetization distribution due to the Cr3+ ion in Cr2O3 has been determined using spherical neutron polarimetry. The magnetic structure factors of h 0 l reflections have been measured out to sin θ/λ = 0.75 A-1. The results show that the Cr3+ magnetic moment is reduced by the zero-point spin deviation and by covalent mixing to 2.48 µB. They are consistent with the Cr d electrons being in the trigonally symmetric a1 and e orbitals derived from the cubic orbitals with t2g symmetry. There is a small but significant magnetization which is not accounted for by these orbitals, which is attributed to covalent overlap. Its symmetry is consistent with the magneto-electric susceptibility.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3e4cb7b171fa6a46ef0ba2f68356b460 https://doi.org/10.1088/0953-8984/14/8/323 Zobrazit plný text záznamu