Magnetic coupling in highly-ordered NiO/Fe3O4(110): Ultrasharp magnetic interfaces vs. long-range magnetoelastic interactions

Abstract

We present a laterally resolved X-ray magnetic dichroism study of the magnetic proximity effect in a highly ordered oxide system, i.e. NiO films on Fe3O4(110). We found that the magnetic interface shows an ultrasharp electronic, magnetic and structural transition from the ferrimagnet to the antiferromagnet. The monolayer which forms the interface reconstructs to NiFe2O4 and exhibits an enhanced Fe and Ni orbital moment, possibly caused by bonding anisotropy or electronic interaction between Fe and Ni cations. The absence of spin-flop coupling for this crystallographic orientation can be explained by a structurally uncompensated interface and additional magnetoelastic effects.

References in corpus (5)

• Enhanced magnetic moment and conductive behavior in NiFe2O4 spinel ultrathin films
• Magnetic versus crystal field linear dichroism in NiO thin films
• Vanishing Fe 3d orbital moments in single-crystalline magnetite
• Systematic theoretical study of the spin and orbital magnetic moments of 4d and 5d interfaces with Fe films
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Cited by in corpus (3)

• Symmetry analysis of magneto-optical effects: The case of x-ray diffraction and x-ray absorption at the transition metal L23 edge
• Tuning the Néel temperature in an antiferromagnet: the case of NixCo1-xO microstructures
• Electronic and magnetic structure of epitaxial NiO/Fe${}_3$O${}_4$(001) heterostructures grown on MgO(001) and Nb-doped SrTiO${}_3$(001)