Effect of Cr Spacer on Structural and Magnetic Properties of Fe/Gd Multilayers

Drovosekov, A. B.; Ryabukhina, M. V.; Kholin, D. I.; Kreines, N. M.; Manuilovich, E. A.; Savitsky, A. O.; Kravtsov, E. A.; Proglyado, V. V.; Ustinov, V. V.; Keller, T.; Khaydukov, Yu. N.; Choi, Y.; Haskel, D.

doi:10.1134/S1063776118100126

Effect of Cr Spacer on Structural and Magnetic Properties of Fe/Gd Multilayers

Journal Article · Mon Dec 03 23:00:00 EST 2018 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776118100126· OSTI ID:1488409

Drovosekov, A. B. ^[1]; Ryabukhina, M. V. ^[2]; Kholin, D. I. ^[1]; Kreines, N. M. ^[1]; Manuilovich, E. A. ^[3]; Savitsky, A. O. ^[4]; Kravtsov, E. A. ^[5]; Proglyado, V. V. ^[2]; Ustinov, V. V. ^[5]; Keller, T. ^[6]; Khaydukov, Yu. N. ^[6]; Choi, Y. ^[7]; Haskel, D. ^[7]

Russian Academy of Sciences, Moscow (Russia)
Russian Academy of Sciences, Yekaterinburg (Russia)
Russian Academy of Sciences, Moscow (Russia); Moscow Institute of Physics and Technology, Dolgoprudny (Russia)
Russian Academy of Sciences, Moscow (Russia); Russian Academy of Sciences, Chernogolovka (Russia)
Russian Academy of Sciences, Yekaterinburg (Russia); Ural Federal University, Yekaterinburg (Russia)
Max-Planck-Institut für Festkörperforschung, Stuttgart (Germany); Max Planck Society Outstation at the Heinz Maier-Leibnitz Zentrum (MLZ), Garching (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States)

Here, we analyze the role of a thin Cr spacer between Fe and Gd layers on the structure and magnetic properties of a [Fe(35 Å)/Cr(t_Cr)/Gd(50 Å)/Cr(t_Cr)]₁₂ superlattice. Samples without the Cr spacer (t_Cr = 0) and with a thin spacer (t_Cr = 4 Å) are investigated using X-ray diffraction, polarized neutron and resonance X-ray magnetic reflectometry, static magnetometry, magneto-optical Kerr effect, and ferromagnetic resonance techniques. Magnetic properties are studied experimentally in a wide temperature range 4–300 K and analyzed theoretically using numerical simulation on the basis of the mean-field model. We show that a reasonable agreement with the experimental data can be obtained considering temperature dependence of the effective field parameter in gadolinium layers. In conclusion, the analysis of the experimental data shows that besides a strong reduction of the antiferromagnetic coupling between Fe and Gd, the introduction of Cr spacers into Fe/Gd superlattice leads to modification of both structural and magnetic characteristics of the ferromagnetic layers.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC); Russian Foundation for Basic Research

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1488409

Alternate ID(s):: OSTI ID: 22917870

Journal Information:: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 4 Vol. 127; ISSN 1063-7761

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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