High-energy co-implantation of Ti and O ions into sapphire

Nakao, Setsuo; Ikeyama, M.; Tazawa, Masato; Jin, Ping; Niwa, Hiroaki; Tanemura, Seita; Miyagawa, Y.; Miyagawa, S.; Saitoh, Kazuo

doi:10.1016/s0254-0584(98)00055-8

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…During the last decade, several research groups have used ion implantation to synthesize both metallic and semiconductor nanocrystals. In this way, discrete single-element nanoparticles of Cu [17,18], Ag [19][20][21], Au [22][23][24], Fe [25], Pt [26], Pb [27], Se [28], Ge [29], and Si [30][31][32][33] have been formed. Compound nanocrystals have also been formed by sequential implantation of the constituent elements -these include InP [34], GaAs [35,36], ZnS [37,38], CdS [38,39], CdSe [39][40][41] and PbS [38], as well as oxides such as VO 2 [42], V 2 O 3 [43], and ZnAl 2 O 4 [44].…”

Section: Relation To Previous Workmentioning

confidence: 99%

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Ion irradiation effects in nonmetals: formation of nanocrystals and novel microstructures

Meldrum

Boatner

White

et al. 2000

Materials Research Innovations

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Ion implantation is a versatile and powerful technique for producing nanocrystal precipitates embedded in the near-surface region of materials. Radiation effects that occur during the implantation process can lead to complex microstructures and particle size distributions, and in the present work, we focus on the application of these effects to produce novel microstructural properties for insulating or semiconducting nanocrystals formed in optical host materials. Nanocrystal precipitates can be produced in two ways: by irradiation of pure (i.e., non-implanted) crystalline or amorphous materials, or by ion implantation followed by either thermal annealing or subsequent additional irradiation. Different methods for the formation of novel structural relationships between embedded nanocrystals and their hosts have been developed, and the results presented here demonstrate the general flexibility of ion implantation and irradiation techniques for producing unique near-surface nanocomposite microstructures in irradiated host materials.

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Section: Relation To Previous Workmentioning

confidence: 99%

“…13 Cross-sectional and high-magnification TEM micrographs showing the evolution of the precipitates during implantation at room temperature. An SiO 2 specimen was first implanted with 1×10 17 ions/cm 2 of Zn at 320 keV (top). Randomly oriented spherical colloids of metallic Zn occur throughout the implanted region.…”

Section: Hollow Nanocrystalsmentioning

confidence: 99%

Ion irradiation effects in nonmetals: formation of nanocrystals and novel microstructures

Meldrum

Boatner

White

et al. 2000

Materials Research Innovations

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show abstract

“…Also, both the concentration of the implanted ions and their distribution as a function of depth can be controlled. Some authors have suggested that Cu nanoparticles can be formed directly during the ion implantation process, with no subsequent annealing required [7][8][9]. However, in our experiments no spontaneous nucleation occurs because we keep the beam current intensity <100 nA/cm 2 during the Cu + implantation in order to reduce the heating of the samples, and therefore subsequent thermal treatments are carried out to induce the formation of the Cu nanoclusters [10].…”

Section: Introductionmentioning

confidence: 89%

Characterization of nanocluster formation in Cu-implanted silica: Influence of the annealing atmosphere and the ion fluence

Peña

Rodrı́guez-Fernández

Cheang-Wong

et al. 2006

Journal of Non-Crystalline Solids

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“…29 In the previous studies, the absorption peak of Cu metal particles in silica glass matrix was reported to be between 550 nm and 600 nm and it was due to the surface plasmon resonance. [30][31][32][33][34][35][36] However, the absorption peaks related to Cu metal particles were observed at 445 nm and 435 nm in the Cu-doped and Cu/Zn-codoped germano-silicate optical glass fibers, respectively. This blue shift of the absorption peak position of the fibers can be attributed to Cu metal particles with smaller size compared to those in the bulk silica glass.…”

Section: Measurementsmentioning

confidence: 99%

Effect of Zn Addition on Non-Resonant Third-Order Optical Nonlinearity of the Cu-Doped Germano-Silicate Optical Glass Fiber

Ju¹,

Watekar²,

Jeong³

et al. 2012

J. Nanosci. Nanotech.

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Cu/Zn-codoped germano-silicate optical glass fiber was manufactured by using the modified chemical vapor deposition (MCVD) process and solution doping process. To investigate the reduction effect of Zn addition on Cu metal formation in the core of the Cu/Zn-codoped germano-silicate optical glass fiber, the optical absorption property and the non-resonant third-order optical nonlinearity were measured. Absorption peaks at 435 nm and 469 nm in the Cu/Zn-codoped germano-silicate optical glass fiber were contributed to Cu metal particles and ZnO semiconductor particles, respectively. The effective non-resonant optical nonlinearity, gamma, of the Cu/Zn-codoped germano-silicate optical glass fiber was measured to be 1.5097 W(-1) x km(-1) by using the continuous-wave self-phase modulation method. The gamma of the Cu/Zn-codoped germano-silicate optical glass fiber was about four times larger than that of the reference germano-silicate optical glass fiber without any dopants. The increase of the effective non-resonant optical nonlinearity, gamma, of the Cu/Zn-codoped germano-silicate optical glass fiber, can be attributed to the enhanced nonlinear polarization due to incorporated ZnO semiconductor particles and Cu metal ions in the glass network. The Cu/Zn-codoped germano-silicate optical glass fiber showed high nonlinearity and low transmission loss at the optical communication wavelength, which makes it suitable for high-speed-high-capacity optical communication systems.

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High-energy co-implantation of Ti and O ions into sapphire

Cited by 10 publications

References 9 publications

Ion irradiation effects in nonmetals: formation of nanocrystals and novel microstructures

Ion irradiation effects in nonmetals: formation of nanocrystals and novel microstructures

Characterization of nanocluster formation in Cu-implanted silica: Influence of the annealing atmosphere and the ion fluence

Effect of Zn Addition on Non-Resonant Third-Order Optical Nonlinearity of the Cu-Doped Germano-Silicate Optical Glass Fiber

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