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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:24 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
PLD based techniques for ferroelectric oxides thin films growth
Authors:
N.D. Scarisoreanu (1), F. Craciun (2), M. Dinescu (3)
Affiliation:
National Institute for Research and Development in Microtehnologies, Iancu Nicolae 126A , 077190 Bucharest, Romania (1)
CNR-ISC, Istituto dei Sistemi Complessi, Area della Ricerca Roma-Tor Vergata, Via del Fosso del Cavaliere 100, I-0013, Rome, Italy (2)
National Institute for Laser, Plasma and Radiation Physics, PO Box MG–16 Magurele, 077125 Bucharest, Romania (3)
E-mail
dinescum@nipne.ro
Keywords:
laser, thin films, ferroelectric
Abstract:
Ferroelectrics are a class of materials characterized by a spontaneous polarization which can be switched by applying an electric field; its expression is a typical hysteresis loop polarization P – electric field E. They undergo a structural phase transition from a high temperature paraelectric into a low-temperature ferroelectric phase at Curie temperature. The preparation of these materials in thin film form is a challenging problem, due to their complex composition, the appearance of metastable phases, crystallinity, interface problems, defects, oxygen vacancies, etc. The possibility to transfer complicated stoichiometries directly from the target to a collector pushed Pulsed Laser Deposition in a top position to be applied for piezoelectric and ferroelectric thin films growth. Results obtained in the field of pulsed laser deposition of piezoelectric and ferroelectric thin films are presented.
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