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Self-consistent crystal-field description of tetragonal Pr and U compounds with Van Vleck induced magnetism : 37th Annual conference on magnetism and magnetic materials (1993)

Santini, P. ; Amoretti, G. ; Blaise, A. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 73 (1993), S. 6560-6562

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Details

ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Many U and Pr compounds presenting localized electron behavior are conveniently described in terms of crystal electric field (CF) acting on the J=4 ground multiplet. In particular, compounds having the ThCr2Si2- or CaBe2Ge2-type structure are characterized by a tetragonal CF at the magnetic site. We have developed a method allowing us to estimate the five CF parameters in the case of a singlet CF ground state, a situation in which a Van Vleck induced magnetism can exist. This is done by imposing a priori some experimental constraints, in particular a self-consistent condition on the ordered moment and the ordering temperature. We apply the method to UPt2Si2, PrFe2Si2, and PrFe2Ge2. In the U compound we find that the value of the ordered moment can be accounted for in the localized model. For the two Pr compounds, we find that details of the CF splittings can produce the two very different values of the ordered moment observed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.352563

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