dc.contributor.author |
Cosio-Castaneda, C |
|
dc.contributor.author |
Tavizon, G |
|
dc.contributor.author |
Baeza, A |
|
dc.contributor.author |
de la Mora, P |
|
dc.contributor.author |
Escudero, R |
|
dc.date.accessioned |
2011-01-22T10:26:13Z |
|
dc.date.available |
2011-01-22T10:26:13Z |
|
dc.date.issued |
2007 |
|
dc.identifier.issn |
0953-8984 |
|
dc.identifier.uri |
http://hdl.handle.net/11154/2255 |
|
dc.description.abstract |
The 5d electron-based Sr2-xLaxIrO4 system ( 0 <= x <= 0.2) has been synthesized by a solid-state route. The x = 0 composition is a nonmetallic weak ferromagnet with a Curie temperature at about 240 K. The crystal structure behaviour and magnetic properties exhibited by this Sr2-xLaxIrO4 system can be explained on the basis of the extended character of the 5d electrons of the Ir cation and its valence states. Rietveld analysis of x-ray powder diffraction on Sr2IrO4 agrees well with previous structural neutron experiments. Furthermore, density functional theory ( DFT) calculations predict that I 4(1)/ acd represents a more stable crystal structure than K2NiF4 ( I 4/ mmm). Electrical resistivity and magnetic properties of Sr2-xLaxIrO4 are strongly dependent on the Ir3+ content. The Sr2-xLaxIrO4 magnetic behaviour in the range of 2-240 K can be ascribed to a weak ferromagnet, produced by an array of canted antiferromagnetically ordered Ir4+ magnetic moments. |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
Structure and magnetic properties of the weak ferromagnet Sr2-xLaxIrO4 |
en_US |
dc.type |
Article |
en_US |
dc.identifier.idprometeo |
1039 |
|
dc.identifier.doi |
10.1088/0953-8984/19/44/446210 |
|
dc.source.novolpages |
19(44) |
|
dc.subject.wos |
Physics, Condensed Matter |
|
dc.description.index |
WoS: SCI, SSCI o AHCI |
|
dc.relation.journal |
Journal of Physics-Condensed Matter |
|