Antimony-121 Mössbauer spectral study of the Eu14MnSb 11 and Yb14MnSb11 zintl compounds

Raphaël P. Hermann, Fernande Grandjean, D. Kafle, Dennis E. Brown, C. E. Johnson, S. M. Kauzlarich, Gary J. Long

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Abstract

The antimony-121 Mössbauer spectra of the Yb14MnSb 11 and Eu14MnSb11 Zintl compounds have been measured between 2 or 5 and 300 K. The resulting three-dimensional arrays of the spectral counts, velocity, and temperature have been simultaneously fit with a minimum number of free parameters. These fits yield a 0 Kelvin transferred hyperfine field of 2.9(2) T, a Curie temperature of 57(3) K, and a Mössbauer temperature of 182(2) K for Yb14MnSb11; in this case the transferred field arises solely from the ordering of Mn 2+. Because Eu14MnSb11 has both Eu2+ and Mn2+ ions that are magnetically ordered, its antimony-121 Mössbauer spectra are more complex and reveal two magnetic transitions, the first at 92(1) K resulting from the ordering of the Mn2+ ions and the second at 9.5(1.0) K resulting from the ordering of the Eu2+ ions; the corresponding 0 Kelvin transferred hyperfine fields are 1.3(1) and 3.7(1) T. The antimony-121 isomer shifts yield electronic configurations of 5s1.745p4.28 and 5s1.745p4.19 for the average antimony anion in Yb14MnSb11 and Eu 14MnSb11, respectively.

Original languageEnglish (US)
Pages (from-to)10736-10740
Number of pages5
JournalInorganic Chemistry
Volume46
Issue number25
DOIs
StatePublished - Dec 10 2007

ASJC Scopus subject areas

  • Inorganic Chemistry

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    Hermann, R. P., Grandjean, F., Kafle, D., Brown, D. E., Johnson, C. E., Kauzlarich, S. M., & Long, G. J. (2007). Antimony-121 Mössbauer spectral study of the Eu14MnSb 11 and Yb14MnSb11 zintl compounds. Inorganic Chemistry, 46(25), 10736-10740. https://doi.org/10.1021/ic7014226