1. Magnetization and Mössbauer studies of 57Fe doped SrCoO3.
- Author
-
Felner, I., Nowik, I., Balamurugan, S., and Takayama-Muromachi, E.
- Subjects
MAGNETIZATION ,MOSSBAUER spectroscopy ,FERROMAGNETISM ,THERMOMAGNETISM ,MAGNETIC fields ,HYPERFINE interactions - Abstract
57 Fe (1%) doped SrCoO3 obtained by high-pressure method, has been investigated by magnetization and Mössbauer spectroscopy studies (MS) in the temperature range 4.2 K to 300 K. The ferromagnetic ordering temperature TC obtained is 272(2) K. Isothermal magnetization curves have been measured at various temperatures, from which the saturation moments ( Msat ) have been deduced. The57 Fe MS spectra display standard six-line patterns with an isomer shift typical of Fe3 + and a very small quadrupole splitting (QS = 0.14(1) mm/s above TC ). The magnetic hyperfine field at 4.2 K is 276(1) kOe. The temperature dependencies of the iron hyperfine field and Msat (1.83 µB at 5 K) are almost identical. This shows that the Fe3 + is replacing Co4 + , both of the same electronic configuration. They also interact similarly, namely the Fe–Co exchange is almost identical to the Co–Co exchange. [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF