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The magnetoelectric perovskite Sr2CoMoO6: An insight from neutron powder diffraction
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
2005 (English)In: Materials Research Bulletin, Vol. 40, 840-849 p.Article in journal (Refereed) Published
Abstract [en]

A study of the crystallographic and magnetic structure of the double perovskite Sr2CoMoO6 (SCMO) has been carried out on a polycrystalline sample using neutron powder diffraction (NPD) data between 10 and 700 K. An analysis of the NPD patterns at room temperature has shown that this compound crystallises in the tetragonal space group I4/m with a = 5.5616(1) Å and c = 7.9470(2) Å and has a 1:1 ordered arrangement of Co and Mo at the B-sites. This compound undergoes a I4/m → Fm3m improper ferroelectric phase transition near 560 K. A low-temperature antiferromagnetic ordering (below TN = 36 K) has been followed from sequential NPD data analysis. The antiferromagnetic structure is defined by the propagation vector k = (1/2, 0, 1/2). In addition to the obtained experimental results on magnetic and electric properties some aspects of magnetoelectricity in this perovskite are also discussed.

Place, publisher, year, edition, pages
2005. Vol. 40, 840-849 p.
Keyword [en]
Ceramics, Neutron scattering, Crystal structure, Magnetic structure
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-74839DOI: doi:10.1016/j.materresbull.2005.01.012OAI: oai:DiVA.org:uu-74839DiVA: diva2:102749
Available from: 2005-11-30 Created: 2005-11-30 Last updated: 2011-01-11

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Tellgren, RolandRundlöf, Håkan

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