Non-d${}^0$ Electric Dipole in FeO${}_5$ bipyramid: a New Resource for Quantum Paraelectrics, Ferroelectrics and Multiferroics

Shi-Peng Shen, Yi-Sheng Chai, Jun-Zhuang Cong +5

Electric polarization in conventional ferroelectric oxides usually involves nonmagnetic transition-metal ions with an empty d shell (the d${}^0$ rule). Here we unravel a new mechanis…