Objective
During my reintegration period in Prof. G. A. Kourouklis group (Aristotle University of Thessaloniki, Greece) we plan to study multinary alkaline-earth/lanthanide fulleride salts mainly by means of optical spectroscopic techniques like Raman and luminescence as a function of pressure and temperature. This work is a natural extension of our explorations during my initial M. Curie fellowship in Prof. K. Prassides group (University of Sussex, UK) on these systems which present the possibility of strong coupling between two electronically active sublattices, p(C60) and 4f,5d(rare-earth). Indeed, the rare-earth fullerides exhibit magnetic ordering at low temperatures or electronic phase transitions accompanied by remarkable structural response upon cooling and high-pressure application due to the fragility of the valence states of the lanthanide dopants.
As a first step we intend to study the Eu6-xSrxC60 (x: 1-5) compounds using the Raman technique at ambient and low temperature in order to investigate the exact role of the C60 molecular cages in their transitions to ferromagnetic states bellow 14 K, characterized by indirect lanthanide exchange interactions modulated by the C60 anions. Moreover, we plan to further elucidate the origin of the Ln2.75C60 (Ln: Sm, Yb ) fullerides structural anomalies under external perturbations like pressure and temperature, as well as the consequences of the Sm or Yb valence transitions on the electronic and vibrational properties of these compounds using accordingly the optical techniques mentioned above.
As a continuation of this project and based on the experience gained during my initial M. Curie fellowship, we will work on the isolation and study of the vibrational, electronic and structural properties of the (Ln1-xLn and apos;x) yC60 and (Ln1-xAEx)yC60 (Ln, Ln and apos;: Sm, Yb, Eu, AE: Ba, Sr, x: 0-1, y= 2.75 6) families, which are also expected to display spectacular physical properties due to strong electron correlations.
Fields of science (EuroSciVoc)
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Keywords
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2002-MOBILITY-11
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
THESSALONIKI
Greece
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