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Magnetization and Mössbauer studies of 57Fe doped SrCoO3.
- Source :
- Hyperfine Interactions; 2008, Vol. 184 Issue 1-3, p111-115, 5p, 4 Graphs
- Publication Year :
- 2008
-
Abstract
- <superscript>57</superscript>Fe (1%) doped SrCoO<subscript>3</subscript> 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 T <subscript>C</subscript> obtained is 272(2) K. Isothermal magnetization curves have been measured at various temperatures, from which the saturation moments ( M <subscript>sat</subscript>) have been deduced. The <superscript>57</superscript>Fe MS spectra display standard six-line patterns with an isomer shift typical of Fe<superscript>3 + </superscript> and a very small quadrupole splitting (QS = 0.14(1) mm/s above T <subscript>C</subscript>). The magnetic hyperfine field at 4.2 K is 276(1) kOe. The temperature dependencies of the iron hyperfine field and M <subscript>sat</subscript> (1.83 µ<subscript> B </subscript> at 5 K) are almost identical. This shows that the Fe<superscript>3 + </superscript> is replacing Co<superscript>4 + </superscript>, 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]
Details
- Language :
- English
- ISSN :
- 03043843
- Volume :
- 184
- Issue :
- 1-3
- Database :
- Complementary Index
- Journal :
- Hyperfine Interactions
- Publication Type :
- Academic Journal
- Accession number :
- 35289666
- Full Text :
- https://doi.org/10.1007/s10751-008-9774-x