Memristors based on oxide tunnel junctions are promising candidates for energy efficient neuromorphic computing. However, the low power sensing of nonvolatile resistive state is an important challenge. We report optically induced a memristor La0.7Sr0.3MnO3/BaTiO3/In2O3:SnO2 (90:10) heterostructure with 3 nm thick BaTiO3 ferroelectric barrier. The memristive response originates from modulation i...

Recently, perovskite-type BaTiO3 showing sharp X-ray diffraction peak comparable to that synthesized by a conventional solid-state reaction was obtained mixing Ba(OH)2 and TiO2 hydrous gel leaving the mixture at 323 K or less. However, cubic crystal system, which different from reaction. In this study, structural analysis of cubic-BaTiO3 technique conducted, factors form structure were investig...

High reliability capacitors require a dielectric layer with both high electrical resistivity and high static dielectric constant. The most commonly used material platform for low cost, base metal electrode capacitors (BME) consists of nickel electrodes and barium titanate-based dielectric layers. Barium titanate (BaTiO3) is ferroelectric material with dielectric constant that depends on factors...

Barioperovskite, ideally BaTiO3, is a new member of the perovskite group. It is found as microto nano-crystals in a host of amorphous material contained within hollow, tubular inclusions in benitoite from the Benitoite Mine, San Benito County, California, U.S.A. The mean chemical composition determined by electron-microprobe analysis is (wt%) BaO 65.46, TiO2 34.57, SiO2 0.89, sum 100.92. The em...

The promise of coupling between magnetization and electric polarization and the potential to manipulate one through the other has become in recent years a driving force for many experimental works on multiferroic materials. The ultimate goal of these studies would be a single-phase material exhibiting a strong coupling between inherent ferromagnetic and ferroelectric ordering at room temperatur...

The surface chemistry of single crystal barium titanate (BaTiO3) has been studied using temperature programmed desorption (TPD). TPD measurements were performed with several probe molecules, including methanol and carbon dioxide. The role of oxygen vacancies in the adsorption and reaction of these molecules was examined by annealing the crystal under oxidizing or reducing conditions prior to pe...

Barium Titanate BaTiO3 is known for both its electric and magnetic properties. The synthesis and characterization of iron doped barium titanate; BaTi1-xFexO3 (x= 0.005, 0.01, 0.015) was investigated with a view to understand its structural, magnetic and electrical properties. A finest possible sample of Iron doped micro particles of BaTiO3 (BTO) with possible tetragonal structure via a solid-st...

We use ab initio Quantum Mechanical (QM) calculations to derive a force field that accurately describes the atomic interactions in BaTiO3 allowing, via Molecular Dynamics (MD), the simulation of thousands of atoms. A key feature of the force field (denoted ReaxFF) is that charge transfer and atomic polarization are treated self-consistently. The charge on each atom is separated into a core, des...

The structural, electronic and dielectric properties of high-quality ultrathin BaTiO3 films were investigated. The films, which were grown by ozone-assisted molecular beam epitaxy on Nb-doped SrTiO3(001) substrates and have thicknesses as low as 8 unit cells (u.c.) (3.2 nm), are unreconstructed and atomically smooth with large crystalline terraces. A strain-driven transition to three-dimensiona...