Nanostrucured europium oxide and hydroxide films were obtained by pulsed Nd:YAG (532 nm) laser ablation of a europium metallic target, in the presence of a 1 mbar helium buffer atmosphere. Both the produced film and the ambient plasma were characterized. The plasma was monitored by an electrostatic probe, for plume expansion in vacuum or in the presence of the buffer atmosphere. The time evolution of the ion saturation current was obtained for several probe to substrate distances. The results show the splitting of the plume into two velocity groups, being the lower velocity profile associated with metal cluster formation within the plume. The films were obtained in the presence of helium atmosphere, for several target-to-substrate distances. They were analyzed by Rutherford backscattering spectrometry, x-ray diffraction, and atomic force microscopy, for as-deposited and treated-in-air samples. The results show that the as-deposited samples are amorphous and have chemical composition compatible with europium hydroxide. The thermally treated samples show x-ray diffraction peaks of , with chemical composition showing excess oxygen. Film nanostructuring was shown to be strongly correlated with cluster formation, as shown by velocity splitting in probe current versus time plots.
Skip Nav Destination
Article navigation
September 2010
Research Article|
September 02 2010
Nanostructured europium oxide thin films deposited by pulsed laser ablation of a metallic target in a He buffer atmosphere
H. Luna;
H. Luna
Instituto de Física,
Universidade Federal do Rio de Janeiro
, Cx. Postal 68528, Rio de Janeiro, RJ 21941-972, Brazil
Search for other works by this author on:
D. F. Franceschini;
D. F. Franceschini
a)
Instituto de Física,
Universidade Federal Fluminense
, Niterói, RJ 24210–346, Brazil
Search for other works by this author on:
R. Prioli;
R. Prioli
Departamento de Física,
Pontifícia Universidade Católica do Rio de Janeiro
, Rua Marques de São Vicente 225, 22453-970, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
R. B. Guimarães;
R. B. Guimarães
Instituto de Física,
Universidade Federal Fluminense
, Niterói, RJ 24210–346, Brazil
Search for other works by this author on:
C. M. Sanchez;
C. M. Sanchez
Instituto de Física,
Universidade Federal Fluminense
, Niterói, RJ 24210–346, Brazil
Search for other works by this author on:
G. P. Canal;
G. P. Canal
Centro Brasileiro de Pesquisas Físicas,
Laboratório de Plasmas Aplicados
, Rua Xavier Sigaud 150, 22290-180, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
M. D. L. Barbosa;
M. D. L. Barbosa
Instituto de Física, Departamento de Física Nuclear,
Universidade de São Paulo
, Caixa Postal 66328, 05315-970, São Paulo, SP Brazil
Search for other works by this author on:
R. M. O. Galvão
R. M. O. Galvão
Centro Brasileiro de Pesquisas Físicas,
Laboratório de Plasmas Aplicados
, Rua Xavier Sigaud 150, 22290-180, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
a)
Electronic mail: dante@if.uff.br
J. Vac. Sci. Technol. A 28, 1092–1098 (2010)
Article history
Received:
March 15 2010
Accepted:
June 07 2010
Citation
H. Luna, D. F. Franceschini, R. Prioli, R. B. Guimarães, C. M. Sanchez, G. P. Canal, M. D. L. Barbosa, R. M. O. Galvão; Nanostructured europium oxide thin films deposited by pulsed laser ablation of a metallic target in a He buffer atmosphere. J. Vac. Sci. Technol. A 1 September 2010; 28 (5): 1092–1098. https://doi.org/10.1116/1.3457784
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00