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Relaxation of magnetic clusters in Sr and Fe doped cobaltate perovskites.
- Source :
-
Hyperfine Interactions . 2008, Vol. 184 Issue 1-3, p63-68. 6p. 3 Graphs. - Publication Year :
- 2008
-
Abstract
- Mössbauer study of La1 − x Sr x 57Fe0.025Co0.975O3 (0.15 ≤ x ≤ 0.25) perovskites below their magnetic ordering temperature shows cooperative electronic and magnetic phase separation for all compositions investigated. It is shown that the increase of the Sr concentration results in a transition from superparamagnetism to long range ferromagnetism of Co clusters between x = 0.18 and 0.2. In-field Mössbauer measurements revealed the existence of frustrated magnetic interactions at x = 0.22. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TEMPERATURE
*PARAMAGNETISM
*MOSSBAUER effect
*MAGNETISM
*COBALT
Subjects
Details
- Language :
- English
- ISSN :
- 03043843
- Volume :
- 184
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Hyperfine Interactions
- Publication Type :
- Academic Journal
- Accession number :
- 35289673
- Full Text :
- https://doi.org/10.1007/s10751-008-9767-9