A-Site Columnar-Ordered Perovskite CaZnV 2 O 6 as a Pauli-Paramagnetic Metal.
Masayuki FukudaTakumi NishikuboHongwu YuYoichi OkimotoShin-Ya KoshiharaKazunari YamauraMasaki AzumaPublished in: Inorganic chemistry (2023)
In this study, we successfully synthesized a novel A-site columnar-ordered perovskite CaZnV 2 O 6 . This compound features a square-planar-coordinated Zn 2+ disorder, which is the same characteristic as the centrosymmetric paraelectric CaMnTi 2 O 6 . Unlike CaMnTi 2 O 6 , which shows a centrosymmetric paraelectric-noncentrosymmetric ferroelectric transition, CaZnV 2 O 6 retains Pauli-paramagnetic metallicity arising from itinerant V 4+ d 1 electrons and centrosymmetry down to 5 K. Based on analogous compounds, we expect CaZnV 2 O 6 to provide a new playground for the electronic and magnetic states of V 4+ .