Copper nanocolloids in MgO crystals implanted with Cu ions

Begoña Savoini; Daniel Cáceres; Roberto Gonzalez González; Yok Chen; Joana Vaz Pinto; Rui C. da Silva; Eduardo Jorge Alves

doi:10.1016/j.nimb.2003.12.053

Copper nanocolloids in MgO crystals implanted with Cu ions

Begoña Savoini, Daniel Cáceres, Roberto Gonzalez González, Yok Chen, Joana Vaz Pinto, Rui C. da Silva , Eduardo Jorge Alves

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

7 Citations (Scopus)

Abstract

Rutherford backscattering and optical absorption measurements were used to characterize both intrinsic and extrinsic defects produced in MgO single crystals by implantation with 250 keV Cu2+ ions at a fluence of 1 x 10(17) ions/ cm(2). Several absorption bands identical to those found in neutron irradiated crystals were observed and have been previously associated with oxygen vacancies and higher-order defects involving oxygen vacancies. In addition, a broad extinction band centered at approximate to3.0 eV is observed and is attributed to copper precipitates. The maximum concentration of the implanted Cu ions occurs at a penetration depth of approximate to130 nm. The copper colloids start to dissolve at temperatures above 1100 K and by 1500 K most of the copper ions have diffused into substitutional sites. Hardening induced by implantation was characterized by nanoindentation measurements.

Original language	English
Title of host publication	Proceedings of the Twelfth International Conference on Radiation (REI-12)
Editors	L. Amaral , M. Behar , F. C. Zawislak
Place of Publication	Amsterdam
Publisher	ELSEVIER SCIENCE BV
Pages	148-152
DOIs	https://doi.org/10.1016/j.nimb.2003.12.053
Publication status	Published - Jun 2004
Event	12th International Conference on Radiation Effects in Insulators (REI-12) - Gramado, Brazil Duration: 31 Aug 2003 → 5 Sept 2003 Conference number: 12th

Publication series

Name	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Publisher	Elsevier Science B.V.
Number	1-4 June
Volume	2018
ISSN (Print)	0168-583X

Conference

Conference	12th International Conference on Radiation Effects in Insulators (REI-12)
Country/Territory	Brazil
City	Gramado
Period	31/08/03 → 5/09/03

Keywords

Defects
Ion implantation
MgO
Precipitates

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Savoini, B., Cáceres, D., González, R. G., Chen, Y., Vaz Pinto, J., da Silva , R. C., & Alves, E. J. (2004). Copper nanocolloids in MgO crystals implanted with Cu ions. In L. Amaral , M. Behar , & F. C. Zawislak (Eds.), Proceedings of the Twelfth International Conference on Radiation (REI-12) (pp. 148-152). (Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms; Vol. 2018, No. 1-4 June). ELSEVIER SCIENCE BV. https://doi.org/10.1016/j.nimb.2003.12.053

Savoini, Begoña ; Cáceres, Daniel ; González, Roberto Gonzalez et al. / Copper nanocolloids in MgO crystals implanted with Cu ions. Proceedings of the Twelfth International Conference on Radiation (REI-12). editor / L. Amaral ; M. Behar ; F. C. Zawislak . Amsterdam : ELSEVIER SCIENCE BV, 2004. pp. 148-152 (Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms; 1-4 June).

@inproceedings{9e5f6f3bac9548ae9f74dca1ece71a69,

title = "Copper nanocolloids in MgO crystals implanted with Cu ions",

abstract = "Rutherford backscattering and optical absorption measurements were used to characterize both intrinsic and extrinsic defects produced in MgO single crystals by implantation with 250 keV Cu2+ ions at a fluence of 1 x 10(17) ions/ cm(2). Several absorption bands identical to those found in neutron irradiated crystals were observed and have been previously associated with oxygen vacancies and higher-order defects involving oxygen vacancies. In addition, a broad extinction band centered at approximate to3.0 eV is observed and is attributed to copper precipitates. The maximum concentration of the implanted Cu ions occurs at a penetration depth of approximate to130 nm. The copper colloids start to dissolve at temperatures above 1100 K and by 1500 K most of the copper ions have diffused into substitutional sites. Hardening induced by implantation was characterized by nanoindentation measurements.",

keywords = "Defects , Ion implantation , MgO , Precipitates",

author = "Bego{\~n}a Savoini and Daniel C{\'a}ceres and Gonz{\'a}lez, {Roberto Gonzalez} and Yok Chen and {Vaz Pinto}, Joana and {da Silva}, {Rui C.} and Alves, {Eduardo Jorge}",

note = "Sem PDF. We acknowledge with thanks the Portuguese-Spanish Bilateral Research Collaboration Grant. Research at the University Carlos III was supported by the CICYT of Spain. The research of Y.C. is an outgrowth of past investigations performed at the Condensed Matter Science Division of the Oak Ridge National Laboratory. Research at ITN was partially supported by the CRUP of Portugal under contract AI-E-43/01.; 12th International Conference on Radiation Effects in Insulators (REI-12) ; Conference date: 31-08-2003 Through 05-09-2003",

year = "2004",

month = jun,

doi = "10.1016/j.nimb.2003.12.053",

language = "English",

series = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

publisher = "ELSEVIER SCIENCE BV",

number = "1-4 June",

pages = "148--152",

editor = "{Amaral }, L. and {Behar }, M. and {Zawislak }, {F. C.}",

booktitle = "Proceedings of the Twelfth International Conference on Radiation (REI-12)",

}

Savoini, B, Cáceres, D, González, RG, Chen, Y, Vaz Pinto, J, da Silva , RC & Alves, EJ 2004, Copper nanocolloids in MgO crystals implanted with Cu ions. in L Amaral , M Behar & FC Zawislak (eds), Proceedings of the Twelfth International Conference on Radiation (REI-12). Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, no. 1-4 June, vol. 2018, ELSEVIER SCIENCE BV, Amsterdam, pp. 148-152, 12th International Conference on Radiation Effects in Insulators (REI-12), Gramado, Brazil, 31/08/03. https://doi.org/10.1016/j.nimb.2003.12.053

Copper nanocolloids in MgO crystals implanted with Cu ions. / Savoini, Begoña; Cáceres, Daniel; González, Roberto Gonzalez et al.
Proceedings of the Twelfth International Conference on Radiation (REI-12). ed. / L. Amaral ; M. Behar ; F. C. Zawislak . Amsterdam: ELSEVIER SCIENCE BV, 2004. p. 148-152 (Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms; Vol. 2018, No. 1-4 June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Copper nanocolloids in MgO crystals implanted with Cu ions

AU - Savoini, Begoña

AU - Cáceres, Daniel

AU - González, Roberto Gonzalez

AU - Chen, Yok

AU - Vaz Pinto, Joana

AU - da Silva , Rui C.

AU - Alves, Eduardo Jorge

N1 - Conference code: 12th

PY - 2004/6

Y1 - 2004/6

N2 - Rutherford backscattering and optical absorption measurements were used to characterize both intrinsic and extrinsic defects produced in MgO single crystals by implantation with 250 keV Cu2+ ions at a fluence of 1 x 10(17) ions/ cm(2). Several absorption bands identical to those found in neutron irradiated crystals were observed and have been previously associated with oxygen vacancies and higher-order defects involving oxygen vacancies. In addition, a broad extinction band centered at approximate to3.0 eV is observed and is attributed to copper precipitates. The maximum concentration of the implanted Cu ions occurs at a penetration depth of approximate to130 nm. The copper colloids start to dissolve at temperatures above 1100 K and by 1500 K most of the copper ions have diffused into substitutional sites. Hardening induced by implantation was characterized by nanoindentation measurements.

AB - Rutherford backscattering and optical absorption measurements were used to characterize both intrinsic and extrinsic defects produced in MgO single crystals by implantation with 250 keV Cu2+ ions at a fluence of 1 x 10(17) ions/ cm(2). Several absorption bands identical to those found in neutron irradiated crystals were observed and have been previously associated with oxygen vacancies and higher-order defects involving oxygen vacancies. In addition, a broad extinction band centered at approximate to3.0 eV is observed and is attributed to copper precipitates. The maximum concentration of the implanted Cu ions occurs at a penetration depth of approximate to130 nm. The copper colloids start to dissolve at temperatures above 1100 K and by 1500 K most of the copper ions have diffused into substitutional sites. Hardening induced by implantation was characterized by nanoindentation measurements.

KW - Defects

KW - Ion implantation

KW - MgO

KW - Precipitates

U2 - 10.1016/j.nimb.2003.12.053

DO - 10.1016/j.nimb.2003.12.053

M3 - Conference contribution

T3 - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SP - 148

EP - 152

BT - Proceedings of the Twelfth International Conference on Radiation (REI-12)

A2 - Amaral , L.

A2 - Behar , M.

A2 - Zawislak , F. C.

PB - ELSEVIER SCIENCE BV

CY - Amsterdam

T2 - 12th International Conference on Radiation Effects in Insulators (REI-12)

Y2 - 31 August 2003 through 5 September 2003

ER -

Savoini B, Cáceres D, González RG, Chen Y, Vaz Pinto J, da Silva RC et al. Copper nanocolloids in MgO crystals implanted with Cu ions. In Amaral L, Behar M, Zawislak FC, editors, Proceedings of the Twelfth International Conference on Radiation (REI-12). Amsterdam: ELSEVIER SCIENCE BV. 2004. p. 148-152. (Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms; 1-4 June). doi: 10.1016/j.nimb.2003.12.053

Copper nanocolloids in MgO crystals implanted with Cu ions

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