“…[1][2][3][4][5] The properties of cBN thus far determined indicate that it is an excellent candidate for pressure calibration in simultaneous high-temperature high-pressure experiments using the diamond-anvil cell. 6 Most previous studies of the physical properties of cubic boron nitride were performed by computer simulations, including the tight-binding method, 7,8 molecular dynamics, 9,10 total energy calculations, 11 full-potential, [12][13][14] empirical potential calculation, 15,16 pseudopotential calculation, 4,17,18 local density calculation, 19,20 combined density and pseudopotential calculation, [21][22][23][24] and the all-electron quantum Monte Carlo method. 25 There have also been several experimental studies of the elastic properties of cBN, including static-compression determination of the room-temperature equation of state by x-ray diffraction, 4,6 Young's modulus measurements by the image load method, 26 elastic modulus measurement on sintered polycrystalline samples by a dynamic resonance method, 27 and single-crystal measurements by Brillouin scattering.…”