Phase diagram and magnetic structures of the Co-bearing dugganites Pb3TeCo3A2O14 (A = V, P)

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DOIResolve DOI: http://doi.org/10.1088/0953-8984/25/24/246004
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TypeArticle
Journal titleJournal of Physics Condensed Matter
ISSN0953-8984
Volume25
Issue24
Article number246004
SubjectApplied magnetic fields; Langasites; Magnetic behaviour; Magnetic state; Magnetic susceptibility measurements; Multiferroic properties; Nonmagnetics; Super cell; Magnetic structure; Magnetic susceptibility; Oligomers; Phase diagrams; Lead compounds
AbstractExhibiting rich magnetic behaviour and potentially multiferroic properties, the dugganites, a Te6+ containing subgroup of the langasite series, are an attractive family of compounds for future study. It was recently shown that Pb-bearing members of the dugganite series undergo distortions away from the P321 symmetry that is characteristic of the langasites. Here, we detail the consequences these distortions have on the magnetism exhibited by Pb 3TeCo3V2O14 and Pb 3TeCo3P2O14, solving the magnetic structures of both compounds with respect to a new supercell. Using neutron scattering and magnetic susceptibility measurements, we show that small applied magnetic fields can seriously perturb the delicate magnetic states in both of these systems. This is further demonstrated by presenting how doping P 5+ onto the nonmagnetic V5+ site completely changes the magnetic structure from either of the end series members. Finally, it is shown using inelastic neutron scattering and magnetic susceptibility measurements that Pb3TeCo3V2O14 can be characterized using a model for isosceles trimers, which do not exist in the previously reported P321 subcell.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21270512
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Record identifierdfe91cf4-6ef4-4363-b262-3011e092b6e7
Record created2014-02-14
Record modified2016-05-09
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