Magnetic phase in the near-surface region of an FeBO3 single crystal |
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| Authors: | Stahl Kankeleit Gellert Muller Kamzin |
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| Institution: | Fachbereich Materialwissenschaft, Fachgebiet Dunne Schichten, Petersenstrasse 23, TU Darmstadt, D-64287 Darmstadt, Germany. |
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| Abstract: | An FeBO3 single crystal was studied from 291 K up to the Neel temperature T(N) = 348.35 K by depth selective conversion electron Mossbauer spectroscopy in ultrahigh vacuum (10(-9) mbar). A new magnetic near-surface phase was found. Its thickness D diverges on approaching T(N) and gives a critical exponent for the correlation length of nu = 0.59(4). The phase boundary between the bulk and near-surface phase could be identified. |
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