ScienceDirect - Computational Materials Science: Interface defects and formation of non-collinear magnetic ordering in Fe/Cr multilayers

Interface defects and formation of non-collinear magnetic ordering in Fe/Cr multilayers

Abstract

Article Outline

References

Quick Search: within

67 of 84

	This document
		SummaryPlus
		Article
		Journal Format-PDF (137 K)

	Actions
		Cited By
		Save as Citation Alert
		Export Citation

Computational Materials Science

Volume 17, Issues 2-4
June 2000
Pages 468-472

PII: S0927-0256(00)00071-9
Copyright © 2000 Elsevier Science B.V. All rights reserved.

N. S. Yartseva^a, S. V. Yartsev^a, V. M. Uzdin ^,^,^b and C. Demangeat^b

^a Institute of Metal Physics, 620219 Ekaterinburg, Russia
^b Institut de Physique et Chimie des Matériaux de Strasbourg, 23, rue du Loess, F-67037 Strasbourg, France

Available online 2 June 2000.

Non-collinear magnetic structure of Fe/Cr multilayers was investigated within the framework of Periodic Anderson model (PAM) in mean field approximation for Coulomb repulsion on sites. Self-consistent calculations were performed for the superlattices with different step width at the interface. It is shown that due to frustration in the interface region the ground state corresponds to non-collinear orientation of magnetic moments near steps. This non-collinear ordering penetrates on a large distance from the interface both in Fe and Cr layers and leads to the non-collinear magnetic coupling between Fe layers through the Cr spacer. Angle between magnetic moments of Fe slabs depends strongly not only on the thickness of the Cr spacer but also on the interface structure at atomic scale. It is found that only very specific types of the interface defects with plural frustrations can give out-of-plane orientation of magnetic moments.

Author Keywords: Non-collinear magnetism; Rough interfaces; Fe/Cr multilayers

Acknowledgements
References

(15K)
Fig. 1. Structure of supercell (n=3) of 22 layers made of 4 Fe layers (1_¯4), mixed Fe_¯Cr layer (5), 6 Cr layers (6_¯11), 4 Fe layers (12_¯15), mixed Fe_¯Cr layer (16) and 6 Cr layers (17_¯22).

(5K)
Fig. 2. Angle

_i between average magnetic moment in the ith layer (Fe, Fe & Cr, Cr) and the moment in the first Fe layer. Squares, diamonds, triangles up and down, crosses correspond to the structures with different width of Fe steps: structures "0", "1", "2", "3", "4", respectively. Lines are guide for the eye.

(4K)
Fig. 3. Average magnetic moment per atom in the ith layer (Fe, Fe & Cr, Cr). Squares, diamonds, triangles up and down, crosses correspond to the structures "0", "1", "2", "3", "4", respectively. Lines are guide for the eye.

Subject View:

1. J.C. Slonczewski. J. Magn. Magn. Mater. 150 (1995), p. 13. Abstract | Journal Format-PDF (858 K)

2. L. Davies, J.A. Stroscio, D.T. Pierce and R.J. Celotta. Phys. Rev. Lett. 76 (1966), p. 4175.

3. Y.J. Choi, I.C. Jeong, J.-Y. Park, S.-J. Kahng, J. Lee and Y. Kuk. Phys. Rev. B 59 (1999), p. 10918. Abstract-INSPEC | $Order Document | APS full text | Full-text via CrossRef

4. V.M. Uzdin and N.S. Yartseva. Comp. Mater. Sci. 10 (1998), p. 211. Abstract | Journal Format-PDF (289 K)

5. V.M. Uzdin, A. Mokrani, C. Demangeat and N.S. Yartseva. J. Magn. Magn. Mater. 198_¯199 (1999), p. 469.

6. V.M. Uzdin, N.S. Yartseva and S.A. Yartsev. J. Magn. Magn. Mater. 196_¯197 (1999), p. 70. SummaryPlus | Article | Journal Format-PDF (156 K)

7. V.M. Uzdin, D. Knabben, F.U. Hillebrecht and E. Kisker. Phys. Rev. B 59 (1999), p. 1214. Abstract-INSPEC | $Order Document | APS full text | Full-text via CrossRef

8. F. Klinkhammer, Ch. Sauer, E.Yu. Tsymbal, S. Handschuh, Q. Leng and W. Zinn. J. Magn. Magn. Mater. 161 (1996), p. 49. Abstract-INSPEC | Abstract-Compendex | $Order Document

9. M. Freyss, D. Stoeffler and H. Dreyssé. Phys. Rev. B 54 (1996), p. R12677.

10. D. Knabben, T. Koop, H.A. Drr, F.U. Hillebrecht and G. vanderLaan. J. Elect. Spect. Relat. Phenom. 86 (1997), p. 201. Abstract | Journal Format-PDF (457 K)

11. G. Panaccione, F. Sirotti, E. Narducci and G. Rossi. Phys. Rev. B 55 (1997), p. 389. Abstract-INSPEC | $Order Document | APS full text | Full-text via CrossRef

Corresponding author; email: uzdin@taranis.u-strasbg.fr

This document

SummaryPlus

Article

Journal Format-PDF (137 K)

Actions

Cited By

Save as Citation Alert

Export Citation

Computational Materials Science
Volume 17, Issues 2-4
June 2000
Pages 468-472

67 of 84

Send feedback to ScienceDirect
Software and compilation © 2002 ScienceDirect. All rights reserved.
ScienceDirect® is an Elsevier Science B.V. registered trademark.

Your use of this service is governed by Terms and Conditions. Please review our Privacy Policy for details on how we protect information that you supply.