English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Polarized infrared reflectivity spectra of a (110)-oriented TbScO3 singlecrystal plate were measured down to 10 K. The number of observed polar phononsactive along the crystallographic c axis at low temperatures is much higherthan predicted by factor-group analysis for the orthorhombic Pbnm space group.Moreover, the lowest frequency phonons active in E||c as well as in E||[1-10]polarized spectra exhibit dramatic softening tending to a lattice instabilityat low temperatures. The dielectric permittivity at microwave frequencies doesnot show any ferroelectric-like anomaly, but the dielectric loss exhibits amaximum at 100 K. The origin of the discrepancy between the number of predictedand observed polar phonons as well as the tendency toward lattice instabilityare discussed. Magnetic measurements reveal an antiferromagnetic phasetransition near 3 K.

Polar phonon anomalies in single crystalline TbScO3