6 research outputs found
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 deviceâs functionality, external controlover this spin polarization may thus be achieved by altering the ferromagnet/molecule interfaceâs 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 MetalâOrganic Interfaces: A Generic Property
A high
spin polarization of states around the Fermi level, <i>E</i><sub>F</sub>, 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 Ï 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 metalâs 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