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/

Global: Zendy Plus annual

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

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We investigated the rare-earth transition metal oxide series, Ln2CuTiO6(Ln=Y, Dy, Ho, Er and Yb), crystallizing in the hexagonal structure withnon-centrosymmetric P63cm space group for possible occurrences of multiferroicproperties. Our results show that while these compounds, except Ln=Y, exhibit alow temperature antiferromagnetic transition due to the ordering of therare-earth moments, the expected ferroelectric transition is frustrated by thelarge size difference between Cu and Ti at the B-site. Interestingly, thisleads these compounds to attain a rare and unique combination of desirableparaelectric properties with high dielectric constants, low losses and weaktemperature and frequency dependencies. First-principles calculations establishthese exceptional properties result from a combination of two effects. Asignificant difference in the MO5 polyhedral sizes for M = Cu and M = Tisuppress the expected co-operative tilt pattern of these polyhedra, requiredfor the ferroelectric transition, leading to relatively large values of thedielectric constant for every compound investigated in this series.Additionally, it is shown that the majority contribution to the dielectricconstant arises from intermediate-frequency polar vibrational modes, making itrelatively stable against any temperature variation. Changes in the temperaturestability of the dielectric constant amongst different members of this seriesare shown to arise from changes in relative contributions from soft polarmodes.

Electric and magnetic polarizabilities of hexagonal Ln2CuTiO6 (Ln=Y, Dy, Ho, Er and Yb)