Antimony-121 Mössbauer Spectral Study of -Zn4Sb3
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- 作者：Raphaë ; l P. Hermann ; Fernande Grandjean ; Tsi-Chi Chen ; Dennis E. Brown ; C. E. Johnson ; G. Jeffrey Snyder ; Gary J. Long
- 刊名：Inorganic Chemistry
- 出版年：2007
- 出版时间：February 5, 2007
- 年：2007
- 卷：46
- 期：3
- 页码：767 - 770
- 全文大小：101K
- 年卷期：v.46,no.3(February 5, 2007)
- ISSN：1520-510X
文摘
The Mössbauer spectra of G SRC="/images/gifchars/alpha.gif" BORDER=0>-Zn4Sb3, a compound that is best formulated as 
ges/gifchars/alpha.gif" BORDER=0>-Zn13Sb10 or (Zn2+)13(Sb3-)6(Sb24-)2,have been measured between 5 and 120 K. The resulting six spectra have been simultaneously fit with twocomponents in the ratio of 3:2 corresponding to the Sb3- and Sb2- ions identified in this valence semiconductor.The fits yield temperature independent isomer shifts of -8.17(2) and -9.73(2) mm/s and quadrupole interactionsof -4.9(2) and 0 mm/s for the Sb3- and Sb2- ions, respectively; the corresponding Mössbauer temperatures are197(5) and 207(5) K, temperatures that are lower than the Debye temperature of ges/gifchars/beta2.gif" BORDER=0 ALIGN="middle">-Zn4Sb3. The isomer shiftscorrespond to electronic configurations between 5s25p6 and 5s1.755p4.01 for the Sb3- ions and between 5s25p5 and5s1.805p3.38 for the Sb2- ions, configurations that are in good agreement with the expected configurations for thisvalence semiconductor and with the results of band structure calculations.