Analysis of influence of Yb concentration on thermal, elastic, optical and lattice parameters in YAG single crystal

Bodzenta, Jerzy; Kaźmierczak-Bałata, Anna; Wokulska, K.; Kucytowski, J.; Szperlich, P.; Łukasiewicz, T.; Hofman, B.

doi:10.1016/j.jallcom.2008.05.041

Cited by 12 publications

(11 citation statements)

References 10 publications

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“…However, in the case of transparent samples the necessity of application of additional opaque films deposited on the sample surfaces may lead to systematic errors during the experiment. The results of our earlier investigations seem to confirm this conclusion [8,9]. In this work, we present a variant of the measuring technique used for investigation of transparent single crystals.…”

Section: Introductionsupporting

confidence: 65%

Determination of Thermal-Diffusivity Dependence on Temperature of Transparent Samples by Thermal Wave Method

2009

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The use of a typical measuring cryostat with a standard temperature controller was proposed for investigation of the temperature dependence of the thermal diffusivity of transparent samples. The basic idea is to use the cryostat heater to control the mean sample temperature and to generate the thermal wave in it, simultaneously. Because of the relatively high thermal inertia of the system, the measurements are carried out at frequencies not exceeding 50 mHz. The periodic temperature disturbance in the sample was detected optically by the use of the mirage effect. The proposed method was used for determination of the thermal diffusivity of yttrium aluminum garnet single crystals in a temperature range from 20 • C to 200 • C.

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Section: Introductionsupporting

confidence: 65%

Determination of Thermal-Diffusivity Dependence on Temperature of Transparent Samples by Thermal Wave Method

2009

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“…Details related to the growing process were described elsewhere [6]. Five YAG samples were examined: pure, doped with 3.0 at% and 25 at% of Yb 3+ , and doped with 0.8 at% and 2.1 at% of V 3+ .…”

Section: Samplesmentioning

confidence: 99%

“…In previous experiments, the thermal wave was generated by a Peltier's module, on which the sample was placed [6]. It allowed continuous heating and cooling of the sample in such a way that its average temperature remained constant and equal to ambient.…”

Section: Thermal Wave Measurementsmentioning

confidence: 99%

“…It can be easily doped with rare earth ions like Yb or V. Yb:YAG single crystals possess many advantages, such as high thermal conductivity [5], that are desirable for high-average-power laser systems. A complete characterization of selected properties of Yb:YAG single crystal and its applications was mentioned in our previous article [6]. Another popular crystal applied in nonlinear optics is YAG doped with vanadium ions.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Thermal-Diffusivity Dependence on Temperature of YAG Single Crystals with Different Concentrations of Yb3+ and V3+ Doping Ions

et al. 2012

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Thermal diffusivities of pure and doped yttrium aluminum garnet single crystals were measured as a function of temperature. Samples doped with rare earth ions (3 at% and 25 at% of Yb 3+ , and 0.8 at% and 2.1 at% of V 3+ ) were investigated in the temperature range from 34 • C to 300 • C. Determination of the thermal diffusivity was based on an analysis of propagation of a thermal wave in the sample. The frequency of the thermal wave was 100 mHz. A temperature disturbance connected with the thermal wave propagating in the sample was detected using the mirage effect. The results showed that the thermal diffusivity of all investigated samples decreases with an increase of sample temperature. A drop in the thermal diffusivity is more pronounced for pure and low-doped crystals.

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“…Due to the dynamic development of laser devices and laser technologies, new types and new generations of lasers are currently available [21,26]. One of the new generations of lasers introduced for material processing is the high power diode laser (HPDL) characterized by a rectangular laser beam spot and a uniform energy distribution across the beam spot [5,6,16,22].…”

Section: Introductionmentioning

confidence: 99%

Titanium Matrix Composite Ti/TiN Produced by Diode Laser Gas Nitriding

Lisiecki

2015

Metals

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A high power direct diode laser, emitting in the range of near infrared radiation at wavelength 808-940 nm, was applied to produce a titanium matrix composite on a surface layer of titanium alloy Ti6Al4V by laser surface gas nitriding. The nitrided surface layers were produced as single stringer beads at different heat inputs, different scanning speeds, and different powers of laser beam. The influence of laser nitriding parameters on the quality, shape, and morphology of the surface layers was investigated. It was found that the nitrided surface layers consist of titanium nitride precipitations mainly in the form of dendrites embedded in the titanium alloy matrix. The titanium nitrides are produced as a result of the reaction between molten Ti and gaseous nitrogen. Solidification and subsequent growth of the TiN dendrites takes place to a large extent at the interface of the molten Ti and the nitrogen gas atmosphere. The direction of TiN dendrites growth is perpendicular to the surface of molten Ti. The roughness of the surface layers depends strongly on the heat input of laser nitriding and can be precisely controlled. In spite of high microhardness up to 2400 HV0.2, the surface layers are crack free.

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Analysis of influence of Yb concentration on thermal, elastic, optical and lattice parameters in YAG single crystal

Cited by 12 publications

References 10 publications

Determination of Thermal-Diffusivity Dependence on Temperature of Transparent Samples by Thermal Wave Method

Determination of Thermal-Diffusivity Dependence on Temperature of Transparent Samples by Thermal Wave Method

Determination of Thermal-Diffusivity Dependence on Temperature of YAG Single Crystals with Different Concentrations of Yb3+ and V3+ Doping Ions

Titanium Matrix Composite Ti/TiN Produced by Diode Laser Gas Nitriding

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