Zobrazeno 1 - 10
of 32
pro vyhledávání: '"G. A. Lungu"'
Autor:
Cristian M. Teodorescu, Ioana Cristina Bucur, Nicoleta G. Apostol, Cristian A. Tache, G. A. Lungu
Publikováno v:
Catalysis Today. 366:155-163
Carbon monoxide is adsorbed at room temperature on graphene formed on atomically clean Pt(001)–hex by chemical vapor deposition, starting with ethylene, in ultrahigh vacuum. The graphene formation is characterized in situ by high resolution photoel
Autor:
Nicoleta G. Apostol, Lucian Pintilie, Cristina Chirila, Daniel Lizzit, Paolo Lacovig, G. A. Lungu, Silvano Lizzit, Cristian Mihai Teodorescu
Publikováno v:
RSC Advances. 10:1522-1534
Carbon layers are deposited on 100 nm thick atomically clean (001) lead zirconate titanate (PZT) in ultrahigh vacuum, ruling out the presence of any contaminants. X-ray photoelectron spectroscopy is used to assess the substrate surface or interface c
Autor:
Lucian Pintilie, Nicoleta G. Apostol, Cristina Chirila, Ruxandra M. Costescu, Cristian M. Teodorescu, Lucian Trupina, Ioana Cristina Bucur, Laura Elena Abramiuc, Cristian A. Tache, G. A. Lungu, Liviu Cristian Tanase
Publikováno v:
Thin Solid Films. 669:440-449
Manganese is deposited at high temperature on (001) oriented ferroelectric lead zirco-titanate prepared in two different ways: sputter-annealed or just simply annealed in ultrahigh vacuum. Room temperature ferromagnetism (FM) is obtained for Mn depos
Autor:
Cristina Chirila, Raluca Negrea, Lucian Pintilie, Laura Elena Abramiuc, Nicoleta G. Apostol, Lucian Trupina, Cristian M. Teodorescu, Ioana Cristina Bucur, Ruxandra M. Costescu, G. A. Lungu, Liviu Cristian Tanase
Publikováno v:
Applied Surface Science. 432:27-33
By platinum deposition on a 150 nm thick film of lead zirco-titanate oriented PZT(001), grown on strontium titanate (001) single crystals with a strontium ruthenate buffer layer, which did not show initial preferential out-of-plane orientation of its
Autor:
Ruxandra M. Costescu, Iuliana Pasuk, G. A. Lungu, Amelia Elena Bocîrnea, Cristian M. Teodorescu
Publikováno v:
Applied Surface Science. 424:337-344
Ni films of 20 nm nominal thickness were grown on Ge(001) substrates by molecular beam epitaxy at several different temperatures from room temperature up to 400 °C. X-ray diffraction and X-ray photoelectron spectroscopy reveal the nucleation of Ni-G
Publikováno v:
Applied Surface Science. 363:83-90
Gallium antimonide (GaSb) is the basis of the most photovoltaic and thermophotovoltaic (TPV) systems and its innovative technological aspects based on modern ultra-high vacuum techniques are in trend for device achievement. The real surface of GaSb i
Autor:
G. A. Lungu, Petru Palade, Gabriel Schinteie, Victor Kuncser, C. P. Lungu, I. Jepu, George Filoti, S.G. Greculeasa, Corneliu Porosnicu
Publikováno v:
Journal of Nuclear Materials
Atomic intermixing processes in relation to structural aspects and phase formation in Be based thin films subjected to different annealing treatments simulating the case of re-deposited layered structures on plasma facing components in nuclear fusion
Autor:
L. Hrib, Cristian M. Teodorescu, Lucian Pintilie, Lucian Trupina, Nicoleta G. Apostol, Ioana Cristina Bucur, Liviu Cristian Tanase, Amelia Elena Bocîrnea, Ruxandra M. Costescu, G. A. Lungu
Publikováno v:
Physical Review B. 96
The positions of the low energy electron diffraction (LEED) spots from ferroelectric single crystal films depend on its polarization state, due to electric fields generated outside of the sample. One may derive the surface potential energy, yielding
Autor:
Florin Vasiliu, C. M. Teodorescu, Ioana Cristina Bucur, Nicoleta Răduţoiu, Laura E. Stoflea, Liviu Cristian Tanase, Ionel Mercioniu, Victor Kuncser, G. A. Lungu
Publikováno v:
Materials
Volume 7
Issue 1
Pages 106-129
Materials, Vol 7, Iss 1, Pp 106-129 (2013)
Volume 7
Issue 1
Pages 106-129
Materials, Vol 7, Iss 1, Pp 106-129 (2013)
We report the synthesis of a room temperature ferromagnetic Mn-Ge system obtained by simple deposition of manganese on Ge(001), heated at relatively high temperature (starting with 250 °C). The samples were characterized by low energy electron diffr
Autor:
Lucian Pintilie, Laura E. Stoflea, G. A. Lungu, Nicoleta G. Apostol, Dana G. Popescu, Cristian M. Teodorescu, Cristian A. Tache
Publikováno v:
Materials Science and Engineering: B. 178:1317-1322
This paper analyses in detail the core levels evolution of Pb(Zr,Ti)O 3 , i.e. Pb 4f, Zr 3d, Ti 2p, O 1s in various conditions: absolutely freshly prepared sample, sample stored under air, and the effects of in vacuum annealing. The aim of the study