Structural and magnetic properties of Mn3-xCdxTeO6 (x = 0, 1, 1.5 and 2)
2012 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, Vol. 324, no 8, 1637-1644 p.Article in journal (Refereed) Published
Mn(3)TeO(6) exhibits a corundum-related A(3)TeO(6) structure and a complex magnetic structure involving two magnetic orbits for the Mn atoms [Ivanov et al., 2011 ]. Mn(3-x)Cd(x)TeO(6) (x = 0, 1, 1.5, and 2) ceramics were synthesized by solid state reaction and investigated using X-ray powder diffraction, electron microscopy, and calorimetric and magnetic measurements. Cd(2+) replaces Mn(2+) cations without greatly affecting the structure of the compound. The Mn and Cd cations were found to be randomly distributed over the A-site. Magnetization measurements indicated that the samples order antiferromagnetically at low temperature with a transition temperature that decreases with increasing Cd doping. The nuclear and magnetic structure of one specially prepared (114)Cd containing sample: Mn(1.5) (114)Cd(1.5)TeO(6), was studied using neutron powder diffraction over the temperature range 2-295 K. Mn(1.5) (114)Cd(1.5)TeO(6) was found to order in an incommensurate helical magnetic structure, very similar to that of Mn(3)TeO(6) [Ivanov et al., 2011 ]. However, with a lower transition temperature and the extension of the ordered structure confined to order 240(10) angstrom.
Place, publisher, year, edition, pages
2012. Vol. 324, no 8, 1637-1644 p.
Oxides, Magnetism, Tellurates, Magnetic structures, Neutron diffraction, Multiferroics
Condensed Matter Physics Engineering and Technology Inorganic Chemistry
Research subject Engineering Science with specialization in Solid State Physics; Chemistry with specialization in Inorganic Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-164879DOI: 10.1016/j.jmmm.2011.12.027ISI: 000299114400031OAI: oai:DiVA.org:uu-164879DiVA: diva2:470553