Frustration induced disordered magnetism in Ba3RuTi2O9

The title compound Ba 3 RuTi 2 O 9 crystallizes with a hexagonal unit cell. It contains layers of edge shared triangular network of Ru 4+ ( S = 1) ions. Magnetic susceptibility χ ( T ) and heat capacity data show no long range magnetic ordering down to 1.8 K. A Curie-Weiss (CW) fitting of χ ( T ) yi...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2013-06, Vol.86 (6), Article 247
Main Authors: Dey, T., Mahajan, A. V.
Format: Article
Language:English
Subjects:
Complex Systems
Condensed Matter Physics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fluid- and Aerodynamics
Magnetic properties and materials
Physics
Physics and Astronomy
Regular Article
Solid State Physics
Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
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Summary:The title compound Ba 3 RuTi 2 O 9 crystallizes with a hexagonal unit cell. It contains layers of edge shared triangular network of Ru 4+ ( S = 1) ions. Magnetic susceptibility χ ( T ) and heat capacity data show no long range magnetic ordering down to 1.8 K. A Curie-Weiss (CW) fitting of χ ( T ) yields a large antiferromagnetic CW temperature θ CW = −166 K. However, in low field, a splitting of zero field cooled (ZFC) and field cooled (FC) χ ( T ) is observed below ∼30 K. Our measurements suggest that Ba 3 RuTi 2 O 9 is a highly frustrated system but only a small fraction of the spins in this system undergoes a transition to a frozen magnetic state below ∼ 30 K.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2013-40028-1