Moessbauer study of 57Fe doped LaSrYCu2O6
Creators
- 1. Yokohama City Univ. (Japan). Dept. of Physics
- 2. Inst. of Physical and Chemical Research, Saitama (Japan)
- 3. Kanazawa Univ. (Japan). Dept. of Physics
- 4. National Research Inst. for Metals, Tukuba (Japan)
Description
The Moessbauer spectra of LaSrYCu1.9757Fe0.03O6 were measured from room temperature to 5K. Room temperature spectrum is a paramagnetic doublet, and IS and QS values suggest that high spin Fe3+ are in octahedral site provided by a excess oxygen, similar to La2SrCu2O6. Below 210K, Moessbauer spectra become broad, and consist of paramagnetic doublet and magnetic sextet in the wide temperature range. Temperature variation of Hhf suggest that the Neel temperature lies above 200 K. The irreversibility and field dependence of susceptibility are observed at low temperatures. By combining the results of the Moessbauer spectra and magnetic measurements, these behaviors are explained as superparamagnetism of the antiferro spin clusters, and at low temperatures, clusters freeze to the cluster glass like state
Additional details
Publishing Information
- Journal Title
- Materials Research Bulletin
- Journal Volume
- 30
- Journal Issue
- 7
- Journal Page Range
- p. 789-794.
- ISSN
- 0025-5408
- CODEN
- MRBUAC
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27004547
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETISM; COPPER OXIDES; DOPED MATERIALS; IRON 57; LANTHANUM OXIDES; MAGNETIC PROPERTIES; NEEL TEMPERATURE; PARAMAGNETISM; STRONTIUM OXIDES; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; LANTHANUM COMPOUNDS; MAGNETISM; MATERIALS; NUCLEI; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; STABLE ISOTOPES; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE; YTTRIUM COMPOUNDS