Radial integrals for the magnetic form factor of 5dtransition elements

Abstract

The radial integrals, <linear span>j(L)<linear span>, where L = 0, 2, 4, for several electronic configurations in the 5d electrons of transition metal atoms and ions are calculated using radial wavefunctions from the pseudo-relativistic Hartree-Fock method in the Cowan program. The resultant values are fitted to Gaussian analytical expressions with four exponential terms, and the fitted coefficients are tabulated. This table can be used to interpret the magnetic form factor measurements for 5d transition metals.

Evolution of competing magnetic order in theJeff=1/2insulating state ofSr2Ir1−xCalder1, Kim2, Cao3 et al. 2015Phys. Rev. B423550View full textAdd to dashboardCite

“…6(a), normalized to the (1,0,2 this we modeled the magnetic structure, taking into account the lorentzian function correction using ResLib 23 , absorption of the sample and magnetic form factor for Ir 4+ using the information in Ref. 24. The experimental and calculated results are shown in Fig.…”

Magnetic structure of the quasi-one-dimensionalLa3OsO7as determined by neutron powder diffraction

“…The reaction is thus described as: [30], and magnetic form factor coefficients for Os were adapted from Kobayashi et al [31].…”

Frustration by competing interactions in the highly distorted double perovskites La2NaB′O6(Aczel1, Bugaris2, Li3 et al. 2013Phys. Rev. B544512View full textAdd to dashboardCite

“…Moreover, the expected antiferromagnetic ground state for La 2 NaOsO 6 should produce some strong magnetic peaks below the (002) Bragg position. This regime corresponds to Q values of ∼ 1.5Å −1 or less and is characterized by a magnetic form factor for Os 5+ that is > 80% [26] of the Q = 0 value. This discussion clearly shows that these three effects are not completely responsible for the very small ordered moment size or absence of long-range magnetic ordering in La 2 NaOsO 6 , and therefore an additional factor also contributes to this behaviour.…”

“…[12,13]). Since the Ru 5+ magnetic form factor is not available in the literature, the refinements were attempted with the < j 0 > form factors for both Ru + and Os 5+ [26] and the results yielded the same ordered moment sizes for Ru within one standard deviation. Note that magnetic models consisting of two interpenetrating spin density waves can also be used to describe the data, although these spin configurations are rare in insulating magnets.…”