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Crystal and magneti...
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Eriksson, ThereseUppsala universitet,Oorganisk kemi
(författare)
Crystal and magnetic structure of Mn3IrSi
- Artikel/kapitelEngelska2004
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-93493
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-93493URI
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https://doi.org/10.1103/PhysRevB.69.054422DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-62593URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20120125
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A new ternary Ir-Mn-Si phase with stoichiometry Mn3IrSi has been synthesized and found to crystallize in the cubic AlAu4-type structure, space group P213 with Z=4, which is an ordered form of the β-Mn structure. The unit cell dimension was determined by x-ray powder diffraction to a=6.4973(3)Å. In addition to the crystal structure, we have determined the magnetic structure and properties using superconducting quantum interference device magnetometry and Rietveld refinements of neutron powder diffraction data. A complex noncollinear magnetic structure is found, with magnetic moments of 2.97(4)μB at 10 K only on the Mn atoms. The crystal structure consists of a triangular network built up by Mn atoms, on which the moments are rotated 120° around the triangle axes. The magnetic unit cell is the same as the crystallographic and carries no net magnetic moment. The Néel temperature was determined to be 210 K. A first-principles study, based on density functional theory in a general noncollinear formulation, reproduces the experimental results with good agreement. The observed magnetic structure is argued to be the result of frustration of antiferromagnetic couplings by the triangular geometry.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Lizárraga, RaquelUppsala universitet,Teoretisk magnetism
(författare)
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Felton, SolveigUppsala universitet,Institutionen för materialvetenskap
(författare)
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Bergqvist, LarsUppsala universitet,Teoretisk magnetism,Department of Physics, Uppsala University(Swepub:kth)u1klz1ts
(författare)
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Andersson, YvonneUppsala universitet,Oorganisk kemi(Swepub:uu)yvonande
(författare)
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Nordblad, PerUppsala universitet,Institutionen för materialvetenskap(Swepub:uu)pno26208
(författare)
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Eriksson, OlleUppsala universitet,Teoretisk magnetism(Swepub:uu)olleerik
(författare)
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Uppsala universitetOorganisk kemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Physical Review B. Condensed Matter and Materials Physics69:5, s. 054422-1098-01211550-235X
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