Low-temperature magnetic ordering in SrEr$_2$O$_4$

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dc.creatorPetrenko, O. A.
dc.creatorBalakrishnan, G.
dc.creatorWilson, N. R.
dc.creatorde Brion, S.
dc.creatorSuard, E.
dc.creatorChapon, L. C.
dc.date2008-08-20
dc.date.accessioned2026-07-07T10:18:36Z
dc.date.available2026-07-07T10:18:36Z
dc.descriptionSrEr$_2$O$_4$ has been characterised by low-temperature powder neutron diffraction, as well as single crystal specific heat and magnetisation measurements. Magnetisation measurements show that the magnetic system is highly anisotropic at temperature above ordering. A magnetic field of 280 kOe applied at $T=1.6$ K does not overcome the anisotropic magnetisation and fails to fully saturate the system. Long range antiferromagnetic ordering develops below $T_N=0.75$ K, identified by magnetic Bragg reflections with propagation vector ${\bf k}=0$ and a lambda anomaly in the specific heat. The magnetic structure consists of ferromagnetic chains running along the \textit{c} axis, two adjacent chains being stacked antiferromagnetically. The moments point along the \textit{c} direction, but only one of the two crystallographically in-equivalent Er sites has a sizeable ordered magnetic moment, 4.5 $\rm μ_B$ at 0.55 K. The magnetic properties of SrEr$_2$O$_4$ are discussed in terms of the interplay between the low-dimensionality, competing exchange interactions, dipolar interactions and low lying crystal field levels.
dc.description6 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0808.2675
dc.identifierhttp://arxiv.org/abs/0808.2675
dc.identifierPhys. Rev. B 78, 184410 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.184410
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174242
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleLow-temperature magnetic ordering in SrEr$_2$O$_4$
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