Interface-Driven Multiferroicity in Cubic BaTiO₃-SrTiO₃ Nanocomposites

Abstract

Perovskite multiferroics have drawn significant attention in the development of next-generation multifunctional electronic devices. However, the majority of existing multiferroics exhibit ferroelectric and ferromagnetic orderings only at low temperatures. Although interface engineering in complex oxide thin films has triggered many exotic room-temperature functionalities, the desired coupling of charge, spin, orbital and lattice degrees of freedom often imposes stringent requirements on deposition conditions, layer thickness and crystal orientation, greatly hindering their cost-effective large-scale applications. Herein, we report an interface-driven multiferroicity in low-cost and environmentally friendly bulk polycrystalline material, namely cubic BaTiO3-SrTiO3 nanocomposites which were fabricated through a simple, high-throughput solid-state reaction route. Interface reconstruction in the nanocomposites can be readily controlled by the processing conditions. Coexistence of room-temperature ferromagnetism and ferroelectricity, accompanying a robust magnetoelectric coupling in the nanocomposites, was confirmed both experimentally and theoretically. Our study explores the ‘hidden treasure at the interface’ by creating a playground in bulk perovskite oxides, enabling a broad range of applications that are challenging with thin films, such as low-power-consumption large-volume memory and magneto-optic spatial light modulator.

The catalytic activity of the Pr2Zr2−xFexO7±δ system for the CO oxidation reaction

“…The O3 peak can also be originated due to the interference of the concentration of oxygen vacancies in the material as demonstrated by Shirsath et al. for perovskites structures 59,60 …”

“…The O3 peak can also be originated due to the interference of the concentration of oxygen vacancies in the material as demonstrated by Shirsath et al for perovskites structures. 59,60 After the CO oxidation reaction, an increase in the O1 peak can be noted, that is, after the reaction, there is a higher ratio between the amounts of oxygen absorbed compared to the oxygen present in the lattice. Thus, it is probable that the ability of the pyrochlore structure to absorb oxygen contributes to the catalysis process.…”

A thorough Investigation of Rare-Earth Dy3+ Substituted Cobalt-Chromium Ferrite and Its Magnetoelectric Nanocomposite

“…Magnetoelectric (ME) materials having coupling between magnetic and electric characteristics have attracted considerable interest from the emergence of large ME coefficient in many composite materials. ME materials have the potential to be applicable in multifunctional devices [ 3 , 4 , 5 , 6 ]. Mixed phase ME composite have the proper combination of ferro/ferrimagnetic (magnetostrictive) with ferroelectric (electrostrictive) material which is responsible to generate ME effect.…”

Nickel Slag/Laterite Soil and Nickel Slag/Iron Sand Nanocomposites: Structural, Optical, and Electromagnetic Absorption Properties

“…The development of interfacial interactions can regulate the capability of the material to respond to physical phenomena around it. The discovery of the giant electrocaloric effect induced by interfacial charge indicates that multilayered oxide heterostructures hold tremendous promise for the development of highly efficient and scalable solid-state cooling applications. , A material with a microlayered surface can achieve maximum energy absorption as a multifunctional electronic device. Given that the combination of Fe and Si performs as effectively as a promising MAM, we need to determine how to change the magnetic and electrical properties of NS.…”