DIRECTOR DE PROIECT:         Dr. Serban Constantinescu
PROJECT MANAGER:             Dr. Serban Constantinescu
Email: sconst@infim.ro

Responsabil Proiect (INFLPR):      Dr. Serban Georgescu
Project Manager (INFLPR) :          Dr. Serban Georgescu
Email: serban.georgescu@inflpr.ro

DURATA PROIECTULUI:        2005 - 2008
CONDUCATOR PROIECT:      INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR, BUCURESTI, ROMANIA
PARTENERI:                         1. UNIVERSITATEA BUCURESTI, FACULTATEA DE FIZICA
                                            2. INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI INFLPR DIN BUCURESTI
                                            3. INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE DIN CLUJ-NAPOCA
                                            4. UNIVERSITATEA BABES-BOLYAI, CLUJ-NAPOCA

OBIECTIVES 
1. EPR and Mossbauer spectroscopy studies of substitutional disorder in galo-germanates and galosilicates. The experimental data will be correlated with structural data and simulations of crystal field fluctuations due to stochastic distributions of cations in tetrahedral positions. Single crystals with different and controlled compositions will be grown.

2. Studies of nanodimensional magnetic particles by ferromagnetic resonance and Mossbauer spectroscopies. Size effects will be investigated on samples with narrow size distributions. Dynamic effects will be deduced from temperature dependences, and surface effects will be determined from these data.

3. Studies of magnetic and structural properties of metalic nanowires. Growing methods will be improved, and careful characterization of obtained samples will be made. The spin dynamics will be deduced from EPR data, and dipolar interaction will be investigated experimentally and a theoretical model will be proposed.

4. Volume and surface defects at the interface of thin films of organic semiconductor Alq₃ and other compounds Meq₃ will be studied by magnetic resonance and structural methods. The nature of paramagnetic defects produced by various ways, and electrochemically induced in structured Alq₃-substrate will be determined. Relevant data for its use in OLED devices are in view.

• By these researches, fundamental understanding of a few classes of disordered solids is developed and new knowledge on advanced materials are obtained. A new methodology of spectroscopic data interpretation based on local disorder simulation will be developed. This experience will be diseminated to other reserch groups not involved in this project. A basis for promoting our research groups participation in European Programs will be also achieved. The contribution of young researchers is essential and the project will contribute to their scientific education and development.