no code implementations • 4 Feb 2021 • Rafikul Ali Saha, Anita Halder, Desheng Fu, Mitsuru Itoh, Tanusri Saha-Dasgupta, Sugata Ray
In this paper a comparative structural, dielectric and magnetic study of two langasite compounds Ba$_3$TeCo$_3$P$_2$O$_{14}$ (absence of lone pair) and Pb$_3$TeCo$_3$P$_2$O$_{14}$ (Pb$^{2+}$ 6$s^2$ lone pair) have been carried out to precisely explore the development of room temperature spontaneous polarization in presence of stereochemically active lone pair.
Materials Science
no code implementations • 4 Feb 2021 • Rafikul Ali Saha, Anita Halder, Tanusri Saha-Dasgupta, Desheng Fu, Mitsuru Itoh, Sugata Ray
We have investigated the structural, magnetic and dielectric properties of Pb-based langasite compound Pb$_3$TeMn$_3$P$_2$O$_{14}$ both experimentally and theoretically in the light of metal-oxygen covalency, and the consequent generation of multiferroicity.
Materials Science Strongly Correlated Electrons
no code implementations • 26 Jan 2021 • Anita Halder, Shreya Das, Prabuddha Sanyal, Tanusri Saha-Dasgupta
We find that the magnetism in such multiple sublattice compounds is governed by the interplay and delicate balance between two distinct mechanisms, a) kinetic energy-driven multiple sublattice double exchange mechanism and b) the conventional super-exchange mechanism.
Materials Science
