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Nuclear Instruments and Methods in Physics Research Section A: Accelerators,Spectrometers,Detectors and Associated Equipment
Volume 470, Issues 1-2, 1 September 2001, Pages 210-214

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DOI: 10.1016/S0168-9002(01)01040-3
PII: S0168-9002(01)01040-3
Copyright © 2001 Elsevier Science B.V. All rights reserved.

An extended anomalous fine structure of X-ray quasi-Bragg diffuse scattering from multilayers

V. A. Chernov^a, N. V. Kovalenko^b and S. V. Mytnichenko ^,^,^c

^a Siberian SR Centre, Budker Institute of Nuclear Physics, 11 Lavrentyev Ave., 630090 Novosibirsk, Russia
^b Budker Institute of Nuclear Physics, 11 Lavrentyev Ave., 630090 Novosibirsk, Russia
^c Institute of Solid State Chemistry, 18 Kntateladze Str., 630128 Novosibirsk, Russia

Available online 28 August 2001.

Abstract

An X-ray quasi-Bragg diffuse scattering anomalous fine structure technique was probed near the absorption Ni K-edge to study the interfacial structure of the Ni/C multilayer deposited by the laser ablation. Like other combinations of the EXAFS and diffraction techniques, this method has a spatial selectivity and was shown qualitatively to provide atomic structural information from the mixed interfacial layers. The possibilities and advantages of this technique are discussed.

Author Keywords: Multilayers; X-ray diffuse scattering; EXAFS-spectroscopy

PACS classification codes: 68.55.-a; 61.10.kw

Article Outline

1. Introduction
2. Experimental
3. Results and discussion
4. Conclusion
Acknowledgements
References

(5K)
Fig. 1. The experimental setup: straight theta, small theta, Greek

₀,

₁ and

_B are the incident, scattered and Bragg angles, respectively; E is the photon energy; S1, the primary slit (100 small mu, Greek

m) providing an energy resolution of about 1 eV; S2, the secondary slit (~2 mm) were used to select quasi-Bragg diffuse scattering. The energy scan was performed in such a manner that the diffuse scattering intensity was always measured at the same point in q-space. Though straight theta, small theta, Greek

₀,

₁ and

_B are changed during this scan, the momentum transfer, q and off-specular angle, small omega, Greek

₀_¯

₁ (0.2°) were kept constant.

(3K)
Fig. 2. The DSAFS spectra obtained: the experimental (lower curve) and corrected data (upper curve).

(5K)
Fig. 3. The shield effect due to strong absorption: small mu, Greek

(E) is a bulk absorption attenuation coefficient obtained from the fluorescent EXAFS measurements. The roughness cross-correlation was assumed to be complete.

(4K)
Fig. 4. The dependence of small chi, Greek

(k)k³ obtained from the DSAFS spectrum (solid curve) and standard fluorescent EXAFS (points).

(6K)
Fig. 5. The resulting Fourier transforms of k³-weighted DSAFS (solid curve) and standard fluorescent EXAFS (points).

References

1. V.A. Chernov, N.I. Chkhalo and S.G. Nikitenko J. Phys. IV 7 (1997), pp. C2_¯699.

2. B.W. Batterman Phys. Rev. 133 (1964), p. A759. Full Text via CrossRef

3. V.A. Chernov, N.I. Chkhalo, I.P. Dolbnya and K.V. Zolotarev Nucl. Instr. and Meth. A 395 (1995), pp. 175_¯177. Abstract | PDF (172 K)

4. J.O. Cross, Ph.D. Thesis, University of Washington, 1996.

5. A.V. Andreev, A.G. Michette and A. Renwick J. Modern Opt. 35 (1988), pp. 1667_¯1687. Abstract-INSPEC | $Order Document

6. D.G. Stearns J. Appl. Phys. 71 (1992), pp. 4286_¯4298. Abstract-INSPEC | $Order Document | Full Text via CrossRef

7. V.A. Chernov, N.I. Chkhalo, M.V. Fedorchenko, E.P. Kruglyakov, S.V. Mytnichenko and S.G. Nikitenko J. X-Ray Sci. Technol. 5 (1995), p. 65. Abstract-INSPEC | $Order Document

8. V.A. Chernov, N.I. Chkhalo, M.V. Fedorchenko, E.P. Kruglyakov, S.V. Mytnichenko and S.G. Nikitenko J. X-Ray Sci. Technol. 5 (1995), p. 389. Abstract-INSPEC | $Order Document

9. V.A. Chernov, E.D. Chkhalo, N.V. Kovalenko and S.V. Mytnichenko Nucl. Instr. and Meth. A 448 (2000), p. 276. SummaryPlus | Full Text + Links | PDF (193 K)

10. Brief Description of the SR Experimental Station, Preprint, INP, 90-92, Novosibirsk, 1990.

11. N. Binsted, J.V. Campbell, S.J. Gurman, P.C. Stephenson, SERC Darsbery Laboratory EXCURV92 Program, 1991.

12. V.A. Chernov, V.I. Kondratiev, N.V. Kovalenko, S.V. Mytnichenko, Nucl. Instr. and Meth. A 470 (2001) 145, these proceedings.

Corresponding author. Siberian SR Centre, Budker Institute of Nuclear Physics, 11 Lavrentyev Ave., 630090 Novosibirsk, Russia. Tel.: +7-3832-394013; fax: +7-3832-342163; email: s.v.mytnichenko@inp.nsk.su

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Nuclear Instruments and Methods in Physics Research Section A: Accelerators,Spectrometers,Detectors and Associated Equipment
Volume 470, Issues 1-2, 1 September 2001, Pages 210-214

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