Abstract
The radial ji integrals, which contribute to the neutron magnetic form factors, of several uranium ions (U3+, U4+, U5+) are determined from fully relativistic Dirac-Fock wave functions. The expectation values of the rn operators, rn, with n=-3, 2, 4, and 6 are given for the uranium ions. The possibility of determining the ionization state by magnetic scattering experiments is discussed. The radial ji integrals are used to analyze the experimental form factor of US determined by Wedgwood. Satisfactory agreement is found by choosing a 5f2 Γ1 crystal-field ground state with a large internal exchange field inducing ferromagnetism. Contributions to the magnetic scattering from 6 d electrons are found to be negligible for values of sinθλ>0.2 -1.
| Original language | English |
|---|---|
| Pages (from-to) | 1168-1176 |
| Number of pages | 9 |
| Journal | Physical Review B |
| Volume | 13 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1976 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Neutron magnetic form factors of uranium ions. / Freeman, Arthur J; Desclaux, J. P.; Lander, G. H.; Faber, J.
In: Physical Review B, Vol. 13, No. 3, 1976, p. 1168-1176.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Neutron magnetic form factors of uranium ions
AU - Freeman, Arthur J
AU - Desclaux, J. P.
AU - Lander, G. H.
AU - Faber, J.
PY - 1976
Y1 - 1976
N2 - The radial ji integrals, which contribute to the neutron magnetic form factors, of several uranium ions (U3+, U4+, U5+) are determined from fully relativistic Dirac-Fock wave functions. The expectation values of the rn operators, rn, with n=-3, 2, 4, and 6 are given for the uranium ions. The possibility of determining the ionization state by magnetic scattering experiments is discussed. The radial ji integrals are used to analyze the experimental form factor of US determined by Wedgwood. Satisfactory agreement is found by choosing a 5f2 Γ1 crystal-field ground state with a large internal exchange field inducing ferromagnetism. Contributions to the magnetic scattering from 6 d electrons are found to be negligible for values of sinθλ>0.2 -1.
AB - The radial ji integrals, which contribute to the neutron magnetic form factors, of several uranium ions (U3+, U4+, U5+) are determined from fully relativistic Dirac-Fock wave functions. The expectation values of the rn operators, rn, with n=-3, 2, 4, and 6 are given for the uranium ions. The possibility of determining the ionization state by magnetic scattering experiments is discussed. The radial ji integrals are used to analyze the experimental form factor of US determined by Wedgwood. Satisfactory agreement is found by choosing a 5f2 Γ1 crystal-field ground state with a large internal exchange field inducing ferromagnetism. Contributions to the magnetic scattering from 6 d electrons are found to be negligible for values of sinθλ>0.2 -1.
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U2 - 10.1103/PhysRevB.13.1168
DO - 10.1103/PhysRevB.13.1168
M3 - Article
AN - SCOPUS:0000027043
VL - 13
SP - 1168
EP - 1176
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 3
ER -