Optical Properties of Various Evaporated Rare Earth Oxides and Fluorides*

Hass, G.; Ramsey, Jason; Thun, R.

doi:10.1364/josa.49.000116

Cited by 100 publications

(18 citation statements)

References 7 publications

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“…Therefore the suspensions were treated as MaxwellGarnett-type composite materials, and the relation (6) was used to calculate the effective refractive index n eff . [22] Here f is the filling factor, n nano is the refractive index of LaF 3 , that is [23] and n liq is the refractive index of the liquid medium in which nanocrystals are suspended. Another simple formula [12] used to calculate the effective refractive index is (7) We used eqns (6) and (7) to calculate n eff , and the same values were obtained.…”

Section: Sample Preparation and Characterizationmentioning

confidence: 99%

Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium

Zheng

Zhang

et al. 2009

Luminescence

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Tm(3+):LaF(3) nanocrystals were synthesized with hydrothermal technique. Local-field effect on the radiative relaxation rate was studied in the system of Tm(3+):LaF(3) nanocrystals immersed in several liquid media. The fluorescence lifetime was measured. It was found that the fluorescence decay presented the characteristics of second-order exponential decay, for which the contribution from the ions inside the nanocrystal and ions at the interface of the nanocrystal were distinguished. Investigating the experimental results with proposed models, we found that the surface effect had to be eliminated. For rare earth doped LaF(3) nanocrystals, real-cavity model well explains the influence of surrounding medium on the fluorescence relaxation rate.

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Section: Sample Preparation and Characterizationmentioning

confidence: 99%

Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium

Zheng

Zhang

et al. 2009

Luminescence

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“…The insulating films find innumerable applications in electronic as well as optical devices. The rare earth oxides [l to 31 and fluorides [4] have received particular attention for device applications owing to their mechanical and chemical stability. A considerable amount of work has been done on the dielectric and ac conduction properties of various rare earth fluoride thin films [5 to 101.…”

Section: Introductionmentioning

confidence: 99%

Structure, Dielectric, and AC Conduction Studies on Yttrium Fluoride Thin Films

Ramakrishnan

Narayandass

Balasubramanian

et al. 1990

phys. stat. sol. (a)

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Al–YF3–Al (MIM) capacitors are formed by thermal evaporation under a vacuum of 2.66 × 10−3 Pa. The thickness of the dielectric film (YF3) is measured by MBI. From X‐ray diffraction studies, the structure of the film is found to be amorphous in nature. Aging, annealing, dielectric, and ac conduction studies are made for these films. It is observed that due to aging the capacitance becomes constant after about 25 days and it decreases with repeated annealing cycles. The dielectric constant for a film of thickness 136 nm at 1 kHz and at room temperature is found to be 13.58. AC conduction studies reveal that the conduction mechanism is electronic hopping. The activation energy is estimated from the slope of conductivity versus inverse absolute temperature plot to 0.509 eV.

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“…In order to approximate the lanthanum oxide thermal conductivity, we have extrapolated these values from 30 to 100 mol% LaO 1.5 . The lanthana optical properties are obtained from literature [32][33][34]. The thermo-physical properties of materials used in this paper are shown in Table 1.…”

Section: Excimer Laser Annealing: Numerical Analysismentioning

confidence: 99%

Analysis of excimer laser annealing of amorphous SiGe on La2O3//Si structures

Fornarini¹,

Conde

Chiussi

et al. 2007

Applied Surface Science

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Optical Properties of Various Evaporated Rare Earth Oxides and Fluorides*

Cited by 100 publications

References 7 publications

Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium

Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium

Structure, Dielectric, and AC Conduction Studies on Yttrium Fluoride Thin Films

Analysis of excimer laser annealing of amorphous SiGe on La2O3//Si structures

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Optical Properties of Various Evaporated Rare Earth Oxides and Fluorides*

Cited by 100 publications

References 7 publications

Local‐field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium

Local‐field effect on the fluorescence relaxation of Tm3+:LaF3 nanocrystals immersed in liquid medium

Structure, Dielectric, and AC Conduction Studies on Yttrium Fluoride Thin Films

Analysis of excimer laser annealing of amorphous SiGe on La2O3//Si structures

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Product

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Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium

Local‐field effect on the fluorescence relaxation of Tm³⁺:LaF₃ nanocrystals immersed in liquid medium