Sapphire single crystal

The specific heat at constant pressure, Cpf of the HIP-treated sample with nominal composition LaVg 25 0,7504 was measured over the temperature range 4-400 K by the heat pulse method in a calorimeter that incorporates a feedback system to regulate the temperature of concentric radiation shields surrounding the sample (9). The Cp values are accurate to within 1%, as determined by calibration runs using a polycrystalline copper sample and a sapphire single crystal sample. 

Colomban, R, and Havel, M., Raman imaging of stress-indnced phase transformation in transparent ZnSe ceramics and sapphire single crystal, J. Raman Spec-trosc., 33, 789, 2002. 

AI2O3 synthetic sapphire, single crystal 10 mol dm - NaCl 20-... 

Sapphire Single Crystal from MTI The 0001, 11-20, 10-10, and 1-102 planes were studied, different cleaning procedures. 

The experiments are performed on Au/Co/Au sandwich structures grown by molecular beam epitaxy (MBE) on sapphire single crystal substrates [3] with Co... 

Sapphire (single crystal AI2O3) 0.2-4.5 1.73 vis, 1.65 4 pm fibers, ATR crystals high resistance to acids and alkali at temperatures up to 1000 °C very hard... 

As stated earlier, when compared to the sapphire single crystals, polycrystalline MgAl204 spinel [155-159] and AlON [21-23, 160] are superior for armors or armor-related applications. As the window materials, spinel is superior to sapphire and AlON due to its transparency up to 5 pm wavelength. Its high optical and MIR transparency in the range of 0.25-5.5 pm makes it an ideal candidate as windows and domes for EO and IR sensors on various defence systems, which are usually operated in harsh or extreme environmental conditions. 

Ehman, M.F., Medellin, D., Forrest, F.F., 1976. Mechanical preparation of sapphire single-crystal surfaces by vibratory techniques. Metallography 9, 333. 

The O self-diffusion behavior in deformed sapphire single crystals containing a high density of unidirectional basal dislocations was examined at 1424 to 1636C using 1 0 isotopes and secondary ion mass spectrometry depth profiling. The pipe and lattice diffusion kinetics were best described by ... 

Sapphire. Single-crystal alumina sapphire boules can be made by the VERNEUiL PROCESS (q.v.) and find use as bearings and thread guides. 

Aral Y, Aoyama T, Yoda S (2004) Spherical sapphire single-crystal synthesis by aerodynamic levitation with high growth rate. Rev Sci Instrum 75(7) 2262... 

Figure 3. Rq>resentative deflection vs. distance curves for polystyrene thin film, sapphire single crystal, rubber and low density polyethylene fllm obtained with a silicon nitride cantilever (k = 0.58 N/m). ITie calibration for lever deflection is IV = 15 nN.

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