Abstract
Abstract
We have investigated the magnetic, dielectric and thermal properties of the S
R
u
= 1 magnetic dimer Ba3BiRu2O9, which is known to exhibit a spin-gap opening in conjunction with a first-order magneto-elastic phase transition at ∼175 K. Above the spin-gap temperature, the temperature dependence dielectric constant shows a peak like feature with pronounced frequency dependence. The critical slowing down behavior of this frequency dispersion suggests that a ferroelectric relaxor like electrical glassy state exists above the spin-gap opening temperature regime. The extermination of frequency dispersion—right at the magneto-elastic phase transition, is suggestive of a strong coupling between the lattice and charge-spin degrees of freedom in this triple perovskite system.
Funder
Asian Office of Aerospace Research and Development
Science and Engineering Research Board
Subject
Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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