A structural characterization of the buffer layer for growth of magnetically coupled Co/Cu superlattices

4 páginas, 3 figuras.The maximum value of the magnetoresistance reported so far has been obtained in Co/Cu multilayers grown by sputtering on Si wafers with a buffer layer of 50Åof Fe. It has been claimed that this Fe buffer layer provides a better template for growth than Cu(100) single crystals. We demonstrate here that Fe films, even when deposited in UHV conditions, represent a reacted, nonepitaxial template which results in low structural perfection of Co/Cu multilayers.This work has been financed by the CICyT through grants MAT89-0203 and MAT91-0176-CE.Peer reviewe

I. Ediciones y técnica filológica – II. Lingüística — III. Literatura, historia y filosofía – IV. Reseñas Breves

Peer reviewe

TechnoFusión, a Relevant Facility for Fusion Technologies: The Remote Handling Area

The future commercial production of electricity based on thermonuclear fusion requires the development of a number of research projects in addition to ITER, mostly related to the development of long-term technologies needed for future fusion reactors. Among the priority areas identified in the framework of international fusion research programmes, it is projected to build a specific research centre for fusion technologies in Spain. The so-called National Centre for Fusion Technologies, TechnoFusión, will be equipped with a large number of top facilities for the fusion technological development. The research activities will be focused primarily on several areas, including the implementation of advanced manufacturing technologies, the evaluation of radiation effects on low activation structural and functional materials, the in-beam and out-beam characterization of materials, the development of robotics and automated systems for remote handling, studies of liquid metal technologies and computer simulation. Currently no similar facilities to TechnoFusión exist, so it will provide more realistic tests than those available in other facilities up today, helping in the fast track to DEMO and IFMIF. The present document summarizes a review of the different facilities to be included in TechnoFusión, with special emphasis on those proposed for remote handling (RH) applications. The paper will review the technical specifications concerning the RH facility, the analysis of the mock-up components and tests to be performed, and the relevance of the RH lab capabilities, particularly the required equipment under irradiation conditions.This work was funded by the Spanish Science and Innovation Ministry (MICINN) under grant ICTS-2008-9 and under the National Spanish Plan Radiafus II (CICYD Project ENE2008-06403-C06-01).Publicad

Entrenching Hegemony in Cyprus: The Doctrine of Necessity and the Principle of Bi-communality

When Cyprus became an independent state, newly-drafted constitutional provisions sought to safeguard the rights of the different communities that made up its population – Greek Cypriots, Turkish Cypriots, Maronites, Armenians and Latins. Nevertheless, most political power since then has been concentrated in the hands of the Greek Cypriot majority, with the other groups remaining largely marginalised. This hegemony of the Greek Cypriot political elite has been the result of a dual, and rather contradictory approach. On the one hand, the constitutional protections for the different groups have been eroded through the application of the doctrine of necessity, a mechanism intended to keep the Constitution up to date with the political developments in the country. Conversely, in cases where the doctrine could be used to safeguard the minorities’ rights, the government has highlighted the unamendable nature of the Constitution and relied on the obsolete constitutional provisions that the doctrine of necessity was designed to avoid