WFRF:(Esmaeilzadeh M)
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- Valldor, M. (author)
Preparation and characterisation of the double perovskite Sr2TaMnO6
- Article/chapterEnglish2006
Publisher, publication year, extent ...
- Elsevier BV,2006
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-15376
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-15376URI
- https://doi.org/10.1016/j.jmmm.2005.03.100DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20100525
- The presented compound, Sr2TaMnO6, has a weak, disordered magnetic structure. The metal oxide was prepared under high isostatic oxygen pressure. The doubling of the perovskite structure was proven with electron diffraction and powder neutron diffraction. Combining neutron- and X-ray diffraction data, the room-temperature structure was modelled with the Rietveld method. Both octahedral positions are partially occupied by Mn and Ta, but with different Mn/Ta ratios. AC- and DC-magnetic measurements indicate a magnetic transition at about 17 K and the AC-magnetic susceptibility, both real and imaginary part, is frequency dependent, suggesting that the material has a spin-glass feature. The magnetic spins freeze during a wide temperature range and a possible explanation is a competative situation between the double exchange (ferromagnetism) and the super-exchange (anti-ferromagnetism).
Subject headings and genre
- spin glass
- insulator
- frequency dependence
- double-exchange
- NPD
- spin-glass
- viscosity
Added entries (persons, corporate bodies, meetings, titles ...)
- Esmaeilzadeh, S. (author)
- Andersson, MagnusKTH,Materialfysik, MF(Swepub:kth)u1r4he82 (author)
- Morawski, A. (author)
- KTHMaterialfysik, MF (creator_code:org_t)
Related titles
- In:Journal of Magnetism and Magnetic Materials: Elsevier BV299:1, s. 161-1690304-88531873-4766
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