Effects of Titanium Impurity on the Crystallographic and Spin-rotation Transitions of FeS
- Effects of Titanium Impurity on the Crystallographic and Spin-rotation Transitions of FeS
- 남효덕; 김응찬
- MAGNETIC-PROPERTIES; IRON SULFIDE
- Issue Date
- KOREAN MAGNETICS SOC
- JOURNAL OF MAGNETICS, v.16, no.1, pp.23 - 26
- The effects of titanium ions on the crystallographic and spin-rotation transitions in iron sulfide have been examined by Mossbauer spectroscopy in the temperature range of 78 to 600 K. It is noted that the titanium impurity of Ti(0.02)Fe(0.98)S affects both the crystallographic and spin-rotation transitions of the iron sulfide. 2% impurity of Ti(2+) in FeS causes the increase in the difference between the spin rotation and alpha transition temperature by as much as 10 K compared with that for FeS. Both 1c and 2c structures coexist in the range between the a transition temperature and approximately 26 K, with a smaller hyperfine field corresponding to the lc structure. The spin-rotation temperature for Ti(0.02)Fe(0.98)S was measured to be 365 K, which is 10 K lower than the a transition temperature. By the 2% impurity of Ti(2+) in FeS the Neel temperature appreciably is not affected.
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