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Showing 1 to 10 of 10 for “"ferroelectric polarization"”.
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Carrier manipulation in graphene/ferroelectric hybrid structures
… of these material classes - graphene and ferroelectric oxides. First, the major road blocks complicating previous attempts to integrate graphene with ferroelectric oxides are identified. The hybrid devices fabricated so far suffered from extrinsic hysteresis effects from adsorbed molecules …
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Electronic Structure and Emergent Orders in Correlated Nickelates
… part, we have discovered a macroscopic chiral polarization of the non-collinear magnetic structure in rare earth nickelates which indicates a possible ferroelectric polarization by magneto-electric coupling. In the third part, we seek to understand the ground state electronic landscapes in …
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Spectroscopic study of emergent electronic phases in transition metal based compounds
… fields. Achieving voltage-based control of spin polarization in antiferromagnets is of great interest for realizing energy-efficient and compact devices for information storage and processing. Spin spiral type-II multiferroics exhibit an inversion-symmetry-breaking antiferromagnetic order which …
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First Principles Studies of Magnetic Oxides, Spin-Driven Ferroelectricity, and the Effect of Polarization in the Chemistry of Functional Heterointerfaces
… generating one of the largest spin-driven ferroelectric polarizations measured to date. Based on a generalized spin-current model with Heisenberg-exchange and Dzyaloshinskii-Moriya interaction energetics we explain the microscopic origin of the polarization, including its direction, …
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Effects of transition metal doping on multiferroic ordering in ni3v2o8 and fevo4
… and FeVO4. Magnetic, dielectric, specific heat, polarization and AC susceptibility measurements were used to track changes in phase transition temperatures. We found that the two higher temperature magnetic transitions in Ni3V2O8; TH = 9.1 K and TL = 6.3 K are suppressed to lower temperatures …
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Nanostructured BaTiO3 Thin Films for Enhanced Photoresponse
… ultrafast response and low energy consumption. Ferroelectric materials have attracted considerable interest in this field. On the one hand, the bulk photovoltaic effect (BPV) allows spontaneous separation of photoexcited electron-hole pairs, simplifying device architectures. On the other hand, …
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Structure-Property Relationships of Multifeorric Materials: A Nano Perspective
… behaviors, which are driven by electric fields (ferroelectrics), magnetic fields (ferromagnetics), or mechanical stress (ferroelastics) as they transform from nonferroic to ferroic states, contributing to the sensing and actuating capabilities. This research focuses on two multiferroic crystals, …
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Quantitative off-axis Electron Holography and (multi-)ferroic interfaces
… described as macroscopic fields, e.g. electric polarization or strain, which, in turn, can be either directly or indirectly probed with an electron beam such as used in Transmission Electron Microscopy (TEM). Consequently, TEM is excellently suited for investigating ferroic materials, i.e., …
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Stability of polarization in organic ferroelectric metal-insulator-semiconductor structures
… candidate is an organic TFT incorporating the ferroelectric co-polymer poly(vinylidenefluoride-trifluoroethylene)(P(VDF-TrFE)) as the gate insulator. Dielectric measurements have been carried out on all-organic metal-insulator-semiconductor structures with the ferroelectric polymer …
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Coupling of deformation and electronic properties in two-dimensional materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms