Research output: Contribution to journal › Article › peer-review
Nuclear resonant reflectivity with standing waves for the investigation of a thin 57Fe layer buried inside a superconducting Si/[Mo/Si]45/57Fe/Nb multilayer. / Andreeva, M. A.; Monina, N. G.; Häggström, L.; Lindgren, B.; Kalska, B.; Kamali-M, S.; Vdovichev, S. N.; Salashchenko, N. N.; Semenov, V. G.; Leupold, O.; Rüffer, R.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 266, No. 1, 01.2008, p. 187-196.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Nuclear resonant reflectivity with standing waves for the investigation of a thin 57Fe layer buried inside a superconducting Si/[Mo/Si]45/57Fe/Nb multilayer
AU - Andreeva, M. A.
AU - Monina, N. G.
AU - Häggström, L.
AU - Lindgren, B.
AU - Kalska, B.
AU - Kamali-M, S.
AU - Vdovichev, S. N.
AU - Salashchenko, N. N.
AU - Semenov, V. G.
AU - Leupold, O.
AU - Rüffer, R.
N1 - Funding Information: The work is supported by RFBR Grant No. 05-02-16770 and 07-02-00324, by the Royal Swedish Academy of Sciences and by Uppsala University. The authors are thankful to Dr. Yu.N. Nozdrin and Dr. E.E. Pestov for the T c measurements by the third-harmonic generation at microwave frequencies. Help with the SQUID measurements is acknowledged to Prof. Per Nordblad, Uppsala University, Sweden.
PY - 2008/1
Y1 - 2008/1
N2 - A special multilayer sample Si/[Mo/Si]45/57Fe/Nb has been prepared for the depth selective investigations of the hyperfine fields in thin iron layer at low temperatures above and below the superconducting transition in the top Nb layer (Tc ∼ 8 K) by means of the nuclear resonant reflectivity with standing waves. The periodic multilayer [Mo/Si]45 below the iron layer in our sample was used as "a standing wave generator". A weak magnetic hyperfine splitting in the 57Fe layer was detected just at low temperature. A slight variation of the nuclear resonant reflectivity time spectra measured above and below Tc was observed. At first it was supposed that this change of the spectrum shape is caused by the spatial modulation of ferromagnetic domains in the 57Fe layer caused by a proximity effect. A closer analysis, however, reveals that the spectrum variations are due to just the changes of the relative weights of the magnetic and paramagnetic phases in 57Fe layer.
AB - A special multilayer sample Si/[Mo/Si]45/57Fe/Nb has been prepared for the depth selective investigations of the hyperfine fields in thin iron layer at low temperatures above and below the superconducting transition in the top Nb layer (Tc ∼ 8 K) by means of the nuclear resonant reflectivity with standing waves. The periodic multilayer [Mo/Si]45 below the iron layer in our sample was used as "a standing wave generator". A weak magnetic hyperfine splitting in the 57Fe layer was detected just at low temperature. A slight variation of the nuclear resonant reflectivity time spectra measured above and below Tc was observed. At first it was supposed that this change of the spectrum shape is caused by the spatial modulation of ferromagnetic domains in the 57Fe layer caused by a proximity effect. A closer analysis, however, reveals that the spectrum variations are due to just the changes of the relative weights of the magnetic and paramagnetic phases in 57Fe layer.
KW - Hyperfine interactions
KW - Nuclear resonant reflectivity
KW - Standing waves
KW - Superconductivity
KW - Synchrotron radiation
UR - http://www.scopus.com/inward/record.url?scp=37549033141&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2007.10.026
DO - 10.1016/j.nimb.2007.10.026
M3 - Article
AN - SCOPUS:37549033141
VL - 266
SP - 187
EP - 196
JO - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
JF - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
SN - 0168-583X
IS - 1
ER -
ID: 87427981