Oscillating magnetic anisotropy in epitaxial Au/Fe(1 1 0) and Co/Au/Fe(1 1 0) films

Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers

“…2 a marks the critical SRT border in this space. Relatively drastic decrease of the critical SRT thickness with d Au and hints of its oscillations (mainly visible around d Au = 2.5 Å) stay in good agreement with our previous report on quantum well states in uncovered Au(111)/Fe(110) bilayers 41 . The observed difference (i.e.…”

“…2 a for d Au = 2.5 Å. The latter could be ascribed to the quantum well states (QWS) recently reported for Au(111)/Fe(110) uncovered bilayers 41 . Such QWS can not be ruled out as a driving force for the observed enhanced, Au-mediated AFM/FM exchange interaction, however the absence of subsequent oscillations of H EB for thicker Au does not support such interpretation.…”

Fine tuning of ferromagnet/antiferromagnet interface magnetic anisotropy for field-free switching of antiferromagnetic spins

“…[8][9][10] This SRT causes the Fe magnetization to switch from the [1−10] to the [001] inplane direction as the Fe thickness increases above a critical value of the order of 150 ± 100 Å, depending on preparation conditions or type of the overlayers used to cover Fe (110). 11,12,20 Importantly, the SRT also occurs in NiO/Fe(110) bilayers and can be imaged using X-ray magnetic circular dichroism photo-emission electron microscopy (XMCD-PEEM), 13 as seen in Fig. 1.…”

From Termination Dependent Chemical Sensitivity of Spin Orientation in All-bcc Fe/Co Magnetic Superlattices toward the Concept of an Artificial Surface of a Ferromagnet

“…In the Fe/W(110) system, 24 , 25 the evolution of the uniaxial magnetic anisotropy with the increasing thickness of the Fe layer results in the spin reorientation transition (SRT), in which Fe magnetization switches from the [11̅0] to the [001] in-plane direction. 26 Surface magnetic anisotropy (SMA) of such uncovered Fe(110) films was in the past modified by the deposition of noble metal overlayers (Au, Ag), 27 − 29 adsorption of oxygen, 28 or ultrahigh-vacuum (UHV) residual gases. 30 Consequently, the critical SRT thickness, which for uncovered Fe(110) films varies from 60 Å up to 130 Å depending on the preparation recipe, was drastically lowered (down to ∼10 Å) in the case of Au/Fe bilayers and moderately modified by adsorption of gases on the surface.…”