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Isothermal switching of perpendicular exchange bias by pulsed high magnetic field
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View: Figures


Image of FIG. 1.
FIG. 1.

XAS and XMCD spectra of (a) Co and (b) Cr just after field-cooling in −5 kOe.

Image of FIG. 2.
FIG. 2.

ESMCs of Co for (a) positive- and (b) negative-pulsed magnetic field. Black, green, blue, and red lines represent the ESMC for maximum applied field strengths of 10 kOe, 30 kOe, 80 kOe, and 90 kOe, respectively. Thin black arrows represent the field-sweep direction. (c) Dependence of remanent XMCD signal with maximum pulsed magnetic field. Red and blue symbols represent the remanent XMCD signal after applying positive- and the negative-pulsed magnetic fields, respectively. The broken lines represent the spin flop field of bulk α-Cr2O3.

Image of FIG. 3.
FIG. 3.

XMCD spectra of (a) Co and (b) Cr after switching the exchange bias. The blue and green lines represent the spectra after switching the exchange bias using a positive- and the negative-magnetic field, respectively.

Image of FIG. 4.
FIG. 4.

Schematic representation of the magnetization curve of the ferromagnetic layer. Red solid line represents the magnetization curve for a positive magnetic field strong enough to induce spin flop transition of the antiferromagnetic layer. Orange broken line represents the magnetization curve for a negative magnetic field after switching the exchange bias. Thick color arrows represent the interfacial spin configuration at the various states; 1 as-cooled state, 2 FM spin reversed state, 3 spin flopped state, 4 remanent state after the spin flop. Red arrows represent the ferromagnetic spins. Blue and green arrows represent the antiferromagnetic spins located at the interface and the second layer from the interface, respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Isothermal switching of perpendicular exchange bias by pulsed high magnetic field