Skip Main Navigation Links ScienceDirect Logo Skip Main Navigation Links Register or Login: Password: Home Browse Search Forms My Alerts My Profile Help (Opens new window) Quick Search: within Quick Search searches abstracts, titles, and keywords. Click for more information. 150 of 183 Result List Previous Next Journal of Magnetism and Magnetic Materials Volume 240, Issues 1-3 , February 2002, Pages 497-500 This Document SummaryPlus Full Text + Links PDF (181 K) ------------------------------------------------------------------------ Actions Cited By Save as Citation Alert Export Citation DOI: 10.1016/S0304-8853(01)00912-X PII: S0304-8853(01)00912-X Copyright © 2002 Elsevier Science B.V. All rights reserved. Effect of interface roughness on magnetic multilayers of Fe/Tb and Fe/Cr Amitesh PaulCorresponding Author Contact Information <#m4.cor*>, E-mail The Corresponding Author Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany Available online 24 October 2001. Abstract The effect of systematic variation in the correlated interface roughness on perpendicular magnetic anisotropy (PMA) and giant magnetoresistance (GMR) has been studied in Fe/Tb and Fe/Cr multilayer systems, respectively. Multilayers for each system were deposited simultaneously on a set of float glass substrates pretreated with varying rms surface roughness. In both the systems the amount of intermixing at the interfaces and other morphological parameters are found similar, thus allowing one to separate out the effect of interface roughness only. X-ray reflectivity, diffuse scattering, conversion electron Mösmall beta, Greekbauer spectroscopy and superconducting quantum interference device magnetometry are used to characterise the systems. With the increase in small sigma, Greek, the PMA in Fe/Tb as well as the GMR in Fe/Cr shows a small decrease. The observed effects are mainly due to the changes in the correlated part of the roughness of the multilayers, while the uncorrelated part of the small sigma, Greek of different multilayers are expected to remain similar. Article Outline 1. Introduction 2. Experimental details 3. Results and discussion 3.1. Fe/Tb MLs 3.2. Fe/Cr MLs Acknowledgements References Enlarge Image (15K) Fig. 1. XRR scans of [Fe(3.0 nm)/Tb(2.0 nm)]×20 multilayers along with their fit deposited on FG substrates with different etching times. The substrate roughness (small sigma, Greeks) and interface roughness (small sigma, Greeki) are shown. The inset shows the transverse (small omega, Greek) scan for S1 along with the fit at two different angles of straight theta, small theta, Greek corresponding to the position at the Bragg peak and at an off-set to it. At small omega, Greek¯straight theta, small theta, Greek the specular peak is seen over a diffuse background. For clarity, various curves are shifted relative to each other along the y-axis. Enlarge Image (6K) Fig. 2. The plot of surface roughness of the FG substrates and the corresponding GMR ratio as obtained from the fit to the XRR data and the magnetoresistance measured. The arrows indicate the points for variation maximum/minimum in roughness/GMR. Enlarge Image (5K) Fig. 3. The change in AFF (blacksquare sq bullet, filled) with increase in substrate roughness as obtained from SQUID measurements. Also shown is the GMR normalised to AFF (plus sign in circle) with increasing roughness. References 1. A. Gupta, R. Amitesh Paul, D.K. Gupta, G. Avasthi, Principi, J. Phys. Condes. Mater. 10 (1998) 9669 and references therein. 2. A. Gupta, Amitesh Paul, S.M. Chaudhari, D.M. Phase, J. Phys. Soc. Jpn. 69 (2000) 2182 and references therein. 3. Amitesh Paul, A. Gupta, J. Alloys Compounds 326 (2001) 246. 4. D.E. Savage, J. Kleiner, N. Schimke, Y.H. Phang, T. Jankowski, J. Jacobs, R. Kariotis and M.G. Lagalley J. Appl. Phys. 69 (1991), p. 1411. Abstract-INSPEC | $Order Document | Full Text via CrossRef D.K.G. de Boer Phys. Rev. B 49 (1994), p. 5817. Abstract-INSPEC | $Order Document | Full Text via CrossRef 5. R.A. Brand Nucl. Instrum. and Methods B 28 (1987), p. 398. Abstract-INSPEC | Abstract-Compendex | $Order Document 6. R. Schad, P. Beliën, G. Verbanck, V.V. Moshchalkov, Y. Bruynseraede, H. Fisher, S. Lefebvre and M. Bessiere Phys. Rev. B 59 (1999), p. 1242. Abstract-INSPEC | $Order Document | APS full text | Full Text via CrossRef 7. L.G. Parratt Phys. Rev. 95 (1954), p. 359. Full Text via CrossRef 8. A. Gupta, Amitesh Paul, S. Mukhopadhyay, Ko Mibu, J. Appl. Phys. 90 (2001) 1237. 9. Amitesh Paul, Ajay Gupta, Prasanna Shah, K. Kawaguchi, Hyperfine Interaction 2001, in press. 10. A. Amitesh Paul, S.M. Gupta and D.M. Chaudhari , Phase. Vacuum 60 (2001), p. 401. Corresponding Author Contact Information <#m4.bcor*> Fax: +49-2461-61-4443; email: a.paul@fz-juelich.de This Document SummaryPlus Full Text + Links PDF (181 K) ------------------------------------------------------------------------ Actions Cited By Save as Citation Alert Export Citation Journal of Magnetism and Magnetic Materials Volume 240, Issues 1-3 , February 2002, Pages 497-500 150 of 183 Result List Previous Next Home Browse Search Forms My Alerts My Profile Help (Opens new window) ScienceDirect Logo 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 . 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