Thermophysical Properties of Some Key Solids

White, G. K.; Minges, M. L.

doi:10.1007/bf01458841

Cited by 12 publications

(9 citation statements)

References 14 publications

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“…The points measured for 13 C show a considerable deviation from the 'calculated' red-blue dotted-solid curve. We have fitted (with a scaling factor) to the excess heat capacity for TO 60 K (triangles) the heat capacity measured for bulk iron [16], the transition metal used as flux in the growth (the aluminum content, nominally about 3%, should not affect our arguments). 0.15% molar of iron suffices to account for the excess C p of the synthetic sample in the 50-150 K region.…”

Section: Resultsmentioning

confidence: 99%

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Measurements of the heat capacity of diamond with different isotopic compositions

Cardona

Kremer

Sanati

et al. 2005

Solid State Communications

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Section: Resultsmentioning

confidence: 99%

“…By comparison with the heat capacity of iron (dashed black line, Ref. [16]) we estimate the molar fraction of the iron inclusions in the 13 C sample to be z10 K3 . Table 1).…”

Section: Resultsmentioning

confidence: 99%

Measurements of the heat capacity of diamond with different isotopic compositions

Cardona

Kremer

Sanati

et al. 2005

Solid State Communications

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“…10, which means that as the percentages of Si increase, the CTE decreases. The CTEs of the material of this mirror body, obtained as the average of 38 samples, are 1.39 × 10 −6 ∕K at 120 K, 1.92 × 10 −6 ∕K at 200 K and 2.42 × 10 −6 ∕K at 300 K. However, there is a report about Si [9] that gives lower values of −6.0 × 10 −8 ∕K at 120 K, 1.4 × 10 −6 ∕K at 200 K, and 2.62 × 10 −6 ∕K at 300 K, and hence, this tendency seems to follow the law of mixture for the CTE of material constituents.…”

Section: Discussionmentioning

confidence: 95%

Quality evaluation of spaceborne SiC mirrors (II): evaluation technology for mirror accuracy using actual measurement data of samples cut out from a mirror surface

et al. 2013

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The authors studied the quality evaluation technology of a spaceborne large-scale lightweight mirror that was made of silicon carbide (SiC)-based material. To correlate the material property of a mirror body and the mirror accuracy, the authors evaluated the mirror surface deviation of a prototype mirror by inputting actually measured coefficient of thermal expansion (CTE) data into a finite element analysis model. The CTE data were obtained by thermodilatometry using a commercial grade thermal dilatometer for the samples cut from all over the mirror surface. The computationally simulated contour diagrams well reproduced the mirror accuracy profile that the actual mirror showed in cryogenic testing. Density data were also useful for evaluating the mirror surface deviation because they had a close relationship with the CTE.

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“…In PIC-ED-MD simulations, the work function and electrical resistivity must be specified for each metal. In this work, different work functions (W (100):4.63, Mo (100):4.53, Cu (100):4.59) [42] and resistivity parameters were used in the calculation of W, Mo [43][44][45][46][47] and Cu [36,48] nanotips. All MD simulations were based on the EAM potentials [49][50][51].…”

Section: Methodsmentioning

confidence: 99%

Structural evolution and thermal runaway of refractory W and Mo nanotips in the vacuum under high electric field from PIC-ED-MD simulations

Gao¹,

Li²,

Kyritsakis³

et al. 2022

J. Phys. D: Appl. Phys.

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We performed multiscale-multiphysics simulations for W, Mo and Cu nanotips under high electric field to investigate their structural evolution and thermal runaway process. The critical electric field values for the electric prebreakdown condition are predicted to be 311 MV/m, 570 MV/m and 675 MV/m for Cu, Mo and W nanotips respectively (R0= 1 nm, H0 = 100 nm). The boiling point of the metal is found to be a good predictor of the critical electric field strength for the initiation of thermal runaway. For metal nanotips made of refractory metals such as W and Mo, the structural thermal runaway process is determined by the rapid growth of small protrusions and their subsequent sharpening and thinning under the high electric stress on the apex region. On the other hand, the more intense atomic evaporation of Cu metal nanotips is caused by the ejection of large droplets generated by recrystallization and necking of the molten region at the apex of the nanotip. The differences in the observed structural evolutions of nanotips between refractory metals and the Cu during the thermal runaway event clearly show the strong influence of melting and boiling points on the electric prebreakdown process in nanoscale.

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Thermophysical Properties of Some Key Solids

Cited by 12 publications

References 14 publications

Measurements of the heat capacity of diamond with different isotopic compositions

Measurements of the heat capacity of diamond with different isotopic compositions

Quality evaluation of spaceborne SiC mirrors (II): evaluation technology for mirror accuracy using actual measurement data of samples cut out from a mirror surface

Structural evolution and thermal runaway of refractory W and Mo nanotips in the vacuum under high electric field from PIC-ED-MD simulations

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