AeroRing: Avionics Full Duplex Ethernet Ring with High Availability and QoS Management

The avionics standard AFDX has been introduced to provide high speed communication for new generation aircraft. However, this switched network is deployed in a full redundant way, which leads to significant quantities of wires. To overcome this limitation, a new avionic communication network, called AeroRing, is proposed in this paper to decrease the wiring weight, while guaranteeing the required performance and safety levels. AeroRing is based on a Gigabit Ethernet technologyand implements a daisy-chain wiring scheme on a Full Duplex ring topology. First, the main features of such a proposal, and particularly the QoS and robustness management, are detailed. Then, numerical results of some Performance Indicators (PI) are illustrated to highlight its ability to guarantee the avionics requirements

Fluorinated Phthalocyanine Molecules on Ferromagnetic Cobalt: A Highly Polarized Spinterface

International audienc

Modulating the Ferromagnet/Molecule Spin Hybridization Using an Artificial Magnetoelectric

International audienceSpin-polarized charge transfer at the interface between a ferromagnetic (FM)metal and a molecule can lead to ferromagnetic coupling and to a high spinpolarization at room temperature. The magnetic properties of these interfacescan not only alter those of the ferromagnet but can also stabilize molecularspin chains with interesting opportunities toward quantum computing. Withthe aim to enhance an organic spintronic device’s functionality, external controlover this spin polarization may thus be achieved by altering the ferromagnet/molecule interface’s magnetic properties. To do so, the magnetoelectricproperties of an underlying ferroelectric/ferromagnetic interface are utilized.Switching the ferroelectric polarization state of a PbZr0.2Ti0.8O3 (PZT) bottomlayer within a PZT/Co/FePc-based (Pc - phthalocyanine) device alters the X-raymagnetic circular dichroism of the Fe site within the phthalocyanine moleculartop layer. Thus, how to electrically alter the magnetic properties of an interfacewith high spin polarization at room temperature is demonstrated. Thisexpands electrical control over spin-polarized FM/molecule interfaces, which isfirst demonstrated using ferroelectric molecules, to all molecular classes

High Spin Polarization at Ferromagnetic Metal–Organic Interfaces: A Generic Property

A high spin polarization of states around the Fermi level, <i>E</i>_F, at room temperature has been measured in the past at the interface between a few molecular candidates and the ferromagnetic metal Co. Is this promising property for spintronics limited to these candidates? Previous reports suggested that certain conditions, such as strong ferromagnetism, i.e., a fully occupied spin-up d band of the ferromagnet, or the presence of π bonds on the molecule, i.e., molecular conjugation, needed to be met. What rules govern the presence of this property? We have performed spin-resolved photoemission spectroscopy measurements on a variety of such interfaces. We find that this property is robust against changes to the molecule and ferromagnetic metal’s electronic properties, including the aforementioned conditions. This affirms the generality of highly spin-polarized states at the interface between a ferromagnetic metal and a molecule and augurs bright prospects toward integrating these interfaces within organic spintronic devices