IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Author "RAPTIS, Y. S."

Browsing Articole din publicaţii internaţionale by Author "RAPTIS, Y. S."

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  • Observation of surface phonon mode in porous GaP 
    KARAVANSKII, V. A.; ANASTASSAKIS, Evangelos; RAPTIS, Y. S.; SOKOLOV, V. N.; TIGINYANU, I. M.; URSAKI, V. V. (Society of Photo-Optical Instrumentation Engineers, SPIE, 1996)
    Simple preparation technique of nanoporous semiconductors by anodization has opened new ways to form and investigate quantum and surface effects in nanosized objects. It has also allowed technologists to extend the range ...
  • Phase transitions in defect chalcopyrite compounds under hydrostatic pressure 
    URSAKI, V. V.; BURLAKOV, I. I.; TIGINYANU, I. M.; RAPTIS, Y. S.; ANASTASSAKIS, E.; ANEDDA, A. (American Physical Society, 1999)
    Tetrahedrally bonded AGa2X4(A=Cd, Zn; X=S, Se) compounds crystallizing in defect chalcopyrite and defect famatinite structures have been studied by Raman spectroscopy under hydrostatic pressure. The pressure-induced changes ...
  • Raman Modes in Porous GaP under Hydrostatic Pressure 
    TIGINYANU, I. M.; URSAKI, V. V.; RAPTIS, Y. S.; STERGIOU, V.; ANASTASSAKIS, E.; HARTNAGEL, H. L.; VOGT, A.; PRÉVOT, B.; SCHWAB, C. (John Wiley & Sons, Inc., 1999)
    Bulk and free-standing porous membranes of GaP have been characterised by Raman spectroscopy under hydrostatic pressure, with emphasis to the Fröhlich surface vibration mode. Under compression, an increase in the frequency ...
  • Surface-related phonon mode in porous GaP 
    TIGINYANU, I. M.; URSAKI, V. V.; KARAVANSKII, V. A.; SOKOLOV, V. N.; RAPTIS, Y. S.; ANASTASSAKIS, E. (ELSEVIER, 1996)
    Porous GaP layers prepared by electrochemical anodization of (1 0 0) and (1 1 1) A-oriented n-GaP crystalline substrates in HF solution have been studied by Raman spectroscopy. A surface vibrational mode at 397 cm−1 was ...

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