Surface spin-flop transition in an antiferromagnet

Morosov, A.I.; Сигов, А. С.

doi:10.3367/ufnr.0180.201007b.0709

Cited by 4 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately the measurements in T-geometry have been done only at the selected field values (at 0, 50, 600 and 1500 Oe), and with the anther piece of the same sample in order to avoid the remanent magnetization effects after the first cycle of the magnetic field application (Figs. 11,13). The angular delayed curve and time spectra of reflectivity at zero external field are good fitted with the same hyperfine parameter and B hf orientations (20 o /-160 o ) which according to (41) At 50 Oe the fit results for two geometries are slightly different (Fig.…”

Section: The Results Of the External Field Influencementioning

confidence: 76%

“…The theories so far developed [8][9][10][11][12][13][14] present a rather complicated picture of the layer-by-layer reorientation in the antiferromagnetic MLs under the applied field, however in some papers the evolution of the layer magnetization vectors is treated with the assumption that magnetizations in all even and in all odd magnetic layers are collinear in other words the reorientation of each magnetic sublattice takes place cophasingly. So the process of reorientation under the external field could be described just by two azimuth angles: each one for separate magnetic sublattice.…”

Section: Introductionmentioning

confidence: 99%

“…The layer-by layer variations of the effective azimuth angle in our ML as a function of the ascending applied field which are the results of the joint fit of the delayed reflectivity curves (Figs [10][11]. and time spectra of NRR reflectivity (Figs [12][13]…”

mentioning

confidence: 99%

See 2 more Smart Citations

Field-induced spin reorientation in[Fe/Cr]nmultilayers studied by nuclear resonance reflectivity

et al. 2015

View full text Add to dashboard Cite

We present the depth-resolved nuclear resonance reflectivity (NRR) studies of the magnetization evolution in [ 57 Fe(3 nm)/Cr(1.2 nm)] 10 multilayer under the applied external field. The measurements have been performed at the station BL09XU of SPring-8 at different values of the external field (0 -1500 Oe). We apply the joint fit of the delayed reflectivity curves and the time spectra of the nuclear resonance reflectivity measured at different grazing angles for enhancement of the depth resolution and reliability of the results. For the first time we show that the azimuth angle, which is used in all papers devoted to the magnetization profile determination, has more complicated physical sense due to the partially coherent averaging of the scattering amplitudes from magnetic lateral domains. We describe the way how to select the true azimuth angle from the determined "effective azimuth angle". Finally we obtain the noncollinear twisted magnetization depth-profiles where the spin flop state appears sequentially in different 57 Fe layers at increasing applied field.

show abstract

Section: The Results Of the External Field Influencementioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Field-induced spin reorientation in[Fe/Cr]nmultilayers studied by nuclear resonance reflectivity

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In some systems the 90 o initial orientation of the two magnetic sub-systems have been discovered [11][12][13][14], supported by the bilinear-biquadratic formalism or specific proximity magnetism model ( [15][16], and review [8]). However, the theoretical modeling and the more sophisticated experimental techniques, giving the depth resolved magnetization profiles, like polarized neutron reflectivity (PNR) or nuclear resonance reflectivity (NRR), present a more complicated picture of the depth resolved magnetization reorientations including the layer-by-layer twisting of the magnetization in each magnetic sub-systems [17][18][19][20][21][22][23][24][25][26][27].…”

mentioning

confidence: 99%

“…Besides the obtained interface quality and possible impurities essentially influence the IEC (see e.g. [17,[23][24][25].…”

mentioning

confidence: 99%

Double-spiral magnetic structure of the Fe/Cr multilayer revealed by nuclear resonance reflectivity

et al. 2018

View full text Add to dashboard Cite

We have studied the magnetization depth profiles in a [ 57 Fe(d Fe )/Cr(d Cr )] 30 multilayer with ultrathin Fe layers and nominal thickness of the chromium spacers d Cr  2.0 nm using nuclear resonance scattering of synchrotron radiation. The presence of a broad pure-magnetic half-order (½) Bragg reflection has been detected at zero external field. The joint fit of the reflectivity curves and Mössbauer spectra of reflectivity measured near the critical angle and at the "magnetic" peak reveals that the magnetic structure of the multilayer is formed by two spirals, one in the odd and another one in the even iron layers, with the opposite signs of rotation. The double-spiral structure starts from the surface with the almost antiferromagnetic alignment of the adjacent Fe layers. The rotation of the two spirals leads to nearly ferromagnetic alignment of the two magnetic subsystems at some depth, where the sudden turn of the magnetic vectors by ~180 o (spin-flop) appears, and both spirals start to rotate in opposite directions. The observation of this unusual double-spiral magnetic structure suggests that the unique properties of giant magneto-resistance devices can be further tailored using ultrathin magnetic layers.PACS numbers: 75.70. Cn, 75.25.+z, 76.80.+y Magnetization depth profiles in superlattices consisting of alternating layers of ferromagnetic (FM) and nonmagnetic or antiferromagnetic (AF) materials attract nonvanishing interest since 1986 when it was discovered [1] that AF interlayer exchange coupling (IEC) between adjacent Fe layers across a Cr spacer leads to the giant magnetoresistance effect [2,3]. This discovery brought in 2005 the Nobel prize to A. Fert and P. Grunberg. There are two widely studied features of the

show abstract

Surface Spin-flop Transition in Antiferromagnet

Сигов

2023

Springer Aerospace Technology

View full text Add to dashboard Cite

Surface spin-flop transition in an antiferromagnet

Cited by 4 publications

References 27 publications

Field-induced spin reorientation in[Fe/Cr]nmultilayers studied by nuclear resonance reflectivity

Field-induced spin reorientation in[Fe/Cr]nmultilayers studied by nuclear resonance reflectivity

Double-spiral magnetic structure of the Fe/Cr multilayer revealed by nuclear resonance reflectivity

Surface Spin-flop Transition in Antiferromagnet

Contact Info

Product

Resources

About