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Depth Selective Mössbauer Spectroscopy as a Bridge between Surface and Small Particle Phenomena in Magnetic Materials

Published online by Cambridge University Press:  21 March 2011

B. Stahl ,
M. Ghafari ,
H. Hahn ,
A. Kamzin  and
D. Hanzel
B. Stahl
Affiliation:
Fachbereich Materialwissenschaft, TU Darmstadt, Petersenstrasse 23, D-64287 Darmstadt, Germany
M. Ghafari
Affiliation:
Fachbereich Materialwissenschaft, TU Darmstadt, Petersenstrasse 23, D-64287 Darmstadt, Germany
H. Hahn
Affiliation:
Fachbereich Materialwissenschaft, TU Darmstadt, Petersenstrasse 23, D-64287 Darmstadt, Germany
A. Kamzin
Affiliation:
Laboratory of Magnetism, A. F. Ioffe Physical-Technical Institute, Politekhnicheskaya 26, St. Petersburg, 194021, Russia
D. Hanzel
Affiliation:
J. Stefan Institute, P. O. B. 3000, SI-1001 Ljubljana, Slovenia
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Abstract

A most feasible tool in characterizing magnetic properties is Mössbauer spectroscopy. By a combination with electron spectroscopy, the depth profile of the Mössbauer excitation is experimentally accessible [Liljequist01, Stahl97]. Depth selective Mössbauer studies in the vicinity of the Néel temperatures of an antiferromagnetic FeBO3 single crystal and a α-FeOOH thin film and of the Morin transition in an β-Fe2O3 single crystal are presented. Especially in FeBO3, the divergence of both, the spatial correlation between atomic moments and the autocorrelation of the local moment, could be observed in the critical region.

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References

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