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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03122naa a2200397 4500 | |
| 001 | oai:DiVA.org:uu-143677 | |
| 003 | SwePub | |
| 008 | 110124s2010 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1436772 URI |
| 024 | 7 | a https://doi.org/10.1140/epjb/e2010-00262-72 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Kalvius, G. M.4 aut |
| 245 | 1 0 | a Frustration driven magnetic states of A-site spinels probed by mu SR |
| 264 | c 2010-09-16 | |
| 264 | 1 | b Springer Science and Business Media LLC,c 2010 |
| 338 | a print2 rdacarrier | |
| 520 | a The normal A-site spinels MnAl2O4, FeAl2O4, CoAl2O4, as well as related mixed (Mn0.5Fe0.5Al2O4) and partially inverted (Fe1.4Al1.6O4) spinels have been studied by mu SR. The magnetic ions are subject to magnetic frustration by competing interactions. In all materials and at all temperatures the mu SR spectra consist of two signals suggesting a bimodal distribution of the fluctuation rates of magnetic moments. A characteristic temperature T (M) is found in each compound, representing either a magnetic phase transition into a long-range ordered state (MnAl2O4, Fe1.4Al1.6O4) or the formation of a spin liquid phase (FeAl2O4, CoAl2O4, Mn0.5Fe0.5Al2O4). The magnetic ground state of MnAl(2)O(4)aEuroEuroshows coexistence of antiferromagnetic and spin liquid phases. In FeAl(2)O(4)aEuroEuroand CoAl(2)O(4)aEuroEurolong-range order is suppressed altogether, the ground state can be characterized as a fast relaxing spin liquid coexisting with a small fraction of paramagnetic spins. The partial replacement of Mn by Fe in Mn(0.5)Fe(0.5)Al(2)O(4)aEuroEuroprevents long-range order and leads to a spin liquid state in the low temperature limit. The partial occupancy of B-sites by magnetic ions in Fe(1.4)Al(1.6)O(4)aEuroEurostrengthens the exchange coupling, allowing the formation of long-range magnetic order at a rather high temperature (similar to 100 K). Magnetic phase diagrams are presented demonstrating that for the studied compounds the magnetic properties are determined by the degree of frustration. | |
| 650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
| 653 | a Physics | |
| 653 | a Fysik | |
| 700 | 1 | a Krimmel, A.4 aut |
| 700 | 1 | a Hartmann, Olau Uppsala universitet,Institutionen för fysik och astronomi4 aut0 (Swepub:uu)oha30325 |
| 700 | 1 | a Litterst, F. J.4 aut |
| 700 | 1 | a Wäppling, Rogeru Uppsala universitet,Institutionen för fysik och astronomi4 aut |
| 700 | 1 | a Wagner, F. E.4 aut |
| 700 | 1 | a Tsurkan, V.4 aut |
| 700 | 1 | a Loidl, A.4 aut |
| 710 | 2 | a Uppsala universitetb Institutionen för fysik och astronomi4 org |
| 773 | 0 | t European Physical Journal Bd : Springer Science and Business Media LLCg 77:1, s. 87-100q 77:1<87-100x 1434-6028x 1434-6036 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-143677 |
| 856 | 4 8 | u https://doi.org/10.1140/epjb/e2010-00262-7 |
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