Deak, L. and Bayreuther, Guenther and Bottyan, L. and Gerdau, E. and Korecki, J. and Kornilov, E. I. and Lauter, H. J. and Leupold, O. and Nagy, D. L. and Petrenko, A. V. and Pasyuk-Lauter, V. V. and Reuther, H. and Richter, E. and Roehloberger, R. and Szilagyi, E. (1999) Pure nuclear Bragg reflection of a periodic Fe-56/Fe-57 multilayer. JOURNAL OF APPLIED PHYSICS, 85 (1). pp. 1-7. ISSN 0021-8979,
Full text not available from this repository. (Request a copy)Abstract
Grazing incidence nuclear multilayer diffraction of synchrotron radiation from a periodic stack of alternating Fe-56 and Fe-57 layers was observed. Resonant layer fraction, substrate size, flatness, and surface roughness limits were optimized by previous simulations. The isotopic multilayer (ML) sample of float glass/Fe-57(2.25 nm)/[Fe-56(2.25 nm)/Fe-57(2.25 nm)]X15/Al(9.0 nm) nominal composition was prepared by molecular beam epitaxy at room temperature. Purity structure and lateral homogenity of the isotopic ML film was characterized by magnetometry, Auger electron, Rutherford backscattering, and conversion electron Mossbauer spectroscopies. The isotopic ML structure was investigated by neutron and synchrotron Mossbauer reflectometry. Surface roughness of about 1 nm of the flat substrate (curvature radius > 57 m) was measured by scanning tunneling microscopy and profilometry. A pure nuclear Bragg peak appeared in synchrotron Mossbauer reflectometry at the angle expected from neutron reflectometry while no electronic Bragg peak was found at the same position by x-ray reflectometry. The measured width of the Bragg peak is in accordance with theoretical expectations. (C) 1999 American Institute of Physics. [S0021-8979(99)09201-4].
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIFFRACTION; SCATTERING; SPECTRA; RADIATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Günther Bayreuther |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Nov 2022 15:53 |
| Last Modified: | 29 Nov 2022 15:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48664 |
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