Direct evidence of the orbital contribution to the magnetic moment in AA'FeReO6 double perovskites

Abstract

Spin and orbital magnetic moments of Re in AA'FeReO6 double perovskites (A,A' = Ba, Sr, Ca) have been directly probed employing XMCD spectroscopy at the Re L2,3-edges. A considerable orbital magnetic moment is observed in all the studied compounds despite octahedral coordination. Relative orbital to spin contribution per Re atom rises with lattice distortion from mL/mS = -0.28 to -0.34 for AA'=Ba2FeReO6 and Ca2FeReO6, respectively. A preliminary XMCD measurements at the Fe L2,3-edges reveals also a significant orbital moment of iron in Ca2FeReO6. The relation of the results to the magnetic properties of the compounds is discussed.

8 pages, 3 figures, 1 table

References in corpus (4)

• Electronic structure study of double perovskites $A_2$FeReO${}_6$ (A=Ba,Sr,Ca) and Sr${}_{2}M$MoO${}_6$ (M=Cr,Mn,Fe,Co) by LSDA and LSDA+U
• Metallic and nonmetallic double perovskites: A case study of A${}_2$FeReO${}_6$ (A= Ca, Sr, Ba)
• Electronic structure of half-metallic double perovskites
• X-ray magnetic circular dichroism study of Re 5d magnetism in Sr2CrReO6

Cited by in corpus (10)

• Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
• Magnetism in Re-based ferrimagnetic double perovskites
• The zero-field-cooled exchange bias effect in phase-segregated La${}_{2-x}$A${}_x$CoMnO${}_{6-\delta }$ (A = Ba, Ca, Sr; x = 0, 0.5)
• Spin-Electron-Phonon Excitation in Re-based Half-Metallic Double Perovskites
• Structural and metal-insulator transitions in rhenium based double perovskites via orbital ordering
• The effect of structural and magnetic disorder on the 3$d$-5$d$ exchange interactions of La${}_{2-x}$Ca${}_x$CoIrO${}_6$
• The 3d and 5d electronic structures and orbital hybridization in Ba- and Ca-doped La2CoIrO6 double perovskite
• Electronic structure of Fe and magnetism in the $3d/5d$ double perovskites Ca${}_2$FeReO${}_6$ and Ba${}_2$FeReO${}_6$
• Evolution of electronic and magnetic properties in Mn- and Co-alloyed ferromagnetic kagome metal Fe3Sn2
• Revisiting Goodenough-Kanamori rules in a new series of double perovskites LaSr${}_{1-x}$Ca${}_x$NiReO${}_6$