Title: Magnetic polarization of the americium J = 0 ground state in AmFe2
Authors: MAGNANI NicolaCACIUFFO RobertoWILHELM F.COLINEAU EricELOIRDI RachelGRIVEAU Jean-ChristopheRUSZ J.OPPENEER P. M.ROGALEV A.LANDER G.h.
Citation: PHYSICAL REVIEW LETTERS vol. 114 p. 097203
Publisher: AMER PHYSICAL SOC
Publication Year: 2015
JRC N°: JRC93632
ISSN: 0031-9007
URI: https://journals.aps.org/authenticate?rt=/prl/abstract/10.1103/PhysRevLett.114.097203
http://publications.jrc.ec.europa.eu/repository/handle/JRC93632
DOI: 10.1103/PhysRevLett.114.097203
Type: Articles in periodicals and books
Abstract: Trivalent americium has a non-magnetic (J = 0) ground state arising from the cancelation of the orbital and spin moments. However, magnetism can be induced by a large molecular field if Am3+ is embedded in a ferromagnetic matrix. Using the technique of x-ray magnetic circular dichroism, we show that this is the case in AmFe2. Since Jz = 0, the spin component is exactly twice as large as the orbital one, the total Am moment is opposite to that of Fe, and the magnetic dipole operator Tz can be determined directly; we discuss the progression of the latter across the actinide series.
JRC Directorate:Nuclear Safety and Security

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