Antistructural defects in lead chalcogenides

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In this Subject: <a title="Nuclear Physics" href="/content/subcat;jsessionid=84a7uq22mtrij.alice?j_subject=230&j_availability=">Nuclear Physics ,&nbsp; <a title="Physics (General)" href="/content/subcat;jsessionid=84a7uq22mtrij.alice?j_subject=232&j_availability=">Physics (General)
By this author: Seregin N.P. ;&nbsp; Seregin P.P. ;&nbsp; Nemov S.A. ;&nbsp; <a href="/search;jsessionid=84a7uq22mtrij.alice?option2=author&value2=Yanvareva+AY">Yanvareva A.Y.

Authors: Seregin N.P.; Seregin P.P.; Nemov S.A.; Yanvareva A.Y.

Source: Journal of Physics: Condensed Matter, Volume 15, Number 44, 12 November 2003 , pp. 7591-7597(7)

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Abstract:

It is shown by means of emission Mössbauer spectroscopy on ¹¹⁹Sb(^119mSn) and ^119mTe(^119mSn) isotopes that the charge state of the ^119mSn antistructural defect arising in the anion sublattice after radioactive conversion of ¹¹⁹Sb and ^119mTe does not depend on the Fermi level position. In contrast, the ^119mSn centre in the cation sublattice of PbS and PbSe acts like an electrically active substitutional impurity: in n-type samples the spectrum corresponds to the neutral state of a donor centre (^119mSn²⁺), while in p-type samples it corresponds to the twice ionized state of this centre (^119mSn⁴⁺). In the case of PbTe the tin centres in the cation sublattice are electrically neutral and are stabilized as ^119mSn²⁺ ions. The localization of antimony impurity atoms in the PbS, PbSe and PbTe lattices depends on the conductivity type of the material: in n-type samples the antimony is mainly localized in the anion sublattice, while in p-type samples it is mainly in the cation sublattice.

Document Type: Research article

DOI: http://dx.doi.org/10.1088/0953-8984/15/44/012

Publication date: 2003-11-12