Zobrazeno 1 - 10
of 23
pro vyhledávání: '"C. T. M. Ribeiro"'
Publikováno v:
Química Nova, Vol 21, Iss 4, Pp 521-525 (1998)
Externí odkaz:
https://doaj.org/article/04dc001a26ff4b46ab0778176e175b37
Publikováno v:
Carbon. 45:2678-2684
The synthesis and properties of fullerene-like carbon materials containing nitrogen deposited by ion beam sputtering in a high-vacuum chamber are reported. The samples are grown on Si substrate by sequentially depositing a titanium nitride thin film,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46771ace93c43e81eac7be1907126887
https://doi.org/10.1016/j.carbon.2007.07.016
https://doi.org/10.1016/j.carbon.2007.07.016
Publikováno v:
Journal of Non-Crystalline Solids. 352:1286-1289
This work reports the main results of a systematic investigation on amorphous SiN films doped with neodymium. The samples were prepared by radio frequency sputtering a Si target in a nitrogen atmosphere. The atomic structure of the films was analyzed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94b0131060a1d68555b7aff6c6d9aca3
https://doi.org/10.1016/j.jnoncrysol.2005.11.142
https://doi.org/10.1016/j.jnoncrysol.2005.11.142
Autor:
Teresa C. Rojas, M.C. Marchi, P. Paredez, Fernando Alvarez, M. U. Kleinke, M.E.H. Maia da Costa, Juan Carlos Sánchez-López, Carlos A. Figueroa, C. T. M. Ribeiro
Publikováno v:
Journal of Non-Crystalline Solids. 352:1303-1306
In this paper, we report the synthesis and some properties of nano-structured carbon films grown on nanometric nickel particles at 700 °C by ion beam assisted deposition (IBAD). In situ photoelectron emission spectroscopy (XPS) reveals the presence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f27bcfe9524c8a783cbd7fcf70d311d9
https://doi.org/10.1016/j.jnoncrysol.2006.01.055
https://doi.org/10.1016/j.jnoncrysol.2006.01.055
Autor:
M.E.H. Maia da Costa, Carlos A. Figueroa, J.J.S. Acuña, Fernando Alvarez, P. Paredez, C. T. M. Ribeiro
Publikováno v:
Journal of Non-Crystalline Solids. 352:1314-1318
In this paper we report a study of the oxygen plasma etching effect on CNx nano-structures grown on tiny nickel islands (∼1–5 nm) previously deposited onto oxidized silicon wafers. In order to eliminate the ill-formed structures, broad oxygen ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23492f86c4abeac5c2d293bc39758c7d
https://doi.org/10.1016/j.jnoncrysol.2005.10.027
https://doi.org/10.1016/j.jnoncrysol.2005.10.027
Autor:
Roland Weingärtner, O. Erlenbach, H. Mendel, I. Brauer, Antonio Ricardo Zanatta, C. T. M. Ribeiro, Horst P. Strunk, Albrecht Winnacker, A. Welte
Publikováno v:
Optical Materials. 28:790-793
We present comprehensive cathodo- and photoluminescence measurements from thin amorphous/nanocrystalline (a/nc-) AlN films doped with rare earths. The (a/nc-) AlN films were prepared by reactive rf-sputtering using a high purity (5 N) aluminium disk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f6c7e31d0d307509f2330d49ac56796
https://doi.org/10.1016/j.optmat.2005.09.024
https://doi.org/10.1016/j.optmat.2005.09.024
Publikováno v:
Journal of Applied Physics. 96:5977-5981
Room-temperature photoluminescence has been achieved from rare-earth-doped amorphous (a‐) GeN films. The samples were prepared by the radio-frequency-sputtering method, and light emission from the rare-earth (RE) centers was obtained after irradiat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e38ad04e62800200012ab829b2649a00
https://doi.org/10.1063/1.1794363
https://doi.org/10.1063/1.1794363
Publikováno v:
Journal of Applied Physics. 96:1068-1073
Neodymium-doped amorphous silicon-nitrogen (a-SiN) thin films have been prepared by cosputtering a (Si+Nd) target in a nitrogen atmosphere. After deposition the films were submitted to cumulative thermal annealing treatments and investigated in detai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4212ef55865fac77e80a1a8d5f363e38
https://doi.org/10.1063/1.1760843
https://doi.org/10.1063/1.1760843
Publikováno v:
Journal of Non-Crystalline Solids. :469-472
Amorphous (a-)GeN alloys independently doped with Pr, Sm, Ho, and Er rare-earth (RE) elements were prepared by co-sputtering a Ge + RE target in an atmosphere of pure nitrogen. Room-temperature photoluminescence experiments indicate relatively strong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80bd0663ac0cb07789a52108682cfa24
https://doi.org/10.1016/j.jnoncrysol.2004.03.021
https://doi.org/10.1016/j.jnoncrysol.2004.03.021
Publikováno v:
Journal of Non-Crystalline Solids. :473-476
Room temperature visible photo and cathodoluminescence have been achieved from amorphous ( a -)SiN films independently doped with Pr 3+ , Sm 3+ , Dy 3+ , Ho 3+ , and Er 3+ ions. The films were deposited by co-sputtering a Si target partially covered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2677df6e85ba4f89c71137f623557bd9
https://doi.org/10.1016/j.jnoncrysol.2004.03.022
https://doi.org/10.1016/j.jnoncrysol.2004.03.022