Results 141 to 150 of about 2,664 (204)

Multiple photon field-induced topological states in bulk HgTe. [PDF]

Sci Adv
Shin D, Lu IT, Fan B, Boström EV, Liu H, Svendsen MK, Latini S, Tang P, Rubio A.   +8 more
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Optical properties of cubic boron nitride

Physical Review B, 1995
Optical properties of cubic boron nitride were studied in the spectral range from 400 to 50 000 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$. Raman-scattering, absorption, and reflection spectra were measured. The regions of the one-phonon and multiphonon absorption were studied in detail and the energies of the phonons were determined. The dispersion of
Eremets, M., Gauthier, Michel, Polian, A., Chervin, J., Besson, M., Dubitskii, A., Semenova, Ye. Ye.   +6 more
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Electronic correlations of cubic boron nitride

Physical Review B, 1991
We have calculated total and binding energies of zinc-blende-structure boron nitride. Starting from a self-consistent-field ground-state calculation within a finite basis of Gaussian orbitals centered at the different atoms, the electron correlations were treated by applying the local ansatz.
, Ganduglia-Pirovano, , Stollhoff
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Ultrahard nanotwinned cubic boron nitride

Nature, 2013
Cubic boron nitride (cBN) is a well known superhard material that has a wide range of industrial applications. Nanostructuring of cBN is an effective way to improve its hardness by virtue of the Hall-Petch effect--the tendency for hardness to increase with decreasing grain size.
Yongjun, Tian, Bo, Xu, Dongli, Yu, Yanming, Ma, Yanbin, Wang, Yingbing, Jiang, Wentao, Hu, Chengchun, Tang, Yufei, Gao, Kun, Luo, Zhisheng, Zhao, Li-Min, Wang, Bin, Wen, Julong, He, Zhongyuan, Liu   +14 more
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Optical constants of cubic boron nitride

Physical Review B, 1989
The optical constants of cubic boron nitride were determined for the first time in the vacuum ultraviolet. The fundamental optical-absorption edge determined from these optical constants is 6.1\ifmmode\pm\else\textpm\fi{}0.2 eV.
, Miyata, , Moriki, , Mishima, , Fujisawa, , Hattori   +4 more
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Raman and photoluminescence spectra of indented cubic boron nitride and polycrystalline cubic boron nitride

Diamond and Related Materials, 2000
Abstract The use of Raman spectroscopy, and in particular Raman line shifts, to measure stress in diamond and nitrides such as gallium nitride (GaN), is well known. In both diamond and GaN the application is principally to study stresses in thin films and at the substrate–thin film interface.
R.M. Erasmus, J.D. Comins, M.L. Fish
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Semiconducting cubic boron nitride

Diamond and Related Materials, 1998
Abstract We present new developments in the preparation of semiconducting cubic boron nitride. The thin films were grown on (100) silicon substrates using electron cyclotron resonance (ECR) ion-assisted magnetron sputtering with the kinetic energy of the incident nitrogen ions controlled by a dc substrate bias.
Dmitri Litvinov, Charles A. Taylor, Roy Clarke   +2 more
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Synthesis of Cubic Boron Nitride by Decomposition of Magnesium Boron Nitride

Journal of the American Ceramic Society, 1992
Cubic boron nitride ( c ‐BN) was synthesized by the decomposition of Mg 3 BN 3 under high pressure and high temperature.
Satoshi Nakano, Hiroyuki Ikawa, Osamu Fukunaga   +2 more
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Boron suboxide: As hard as cubic boron nitride

Applied Physics Letters, 2002
The Vickers hardness of boron suboxide single crystals was measured using a diamond indentation method. Under a loading force of 0.98 N, our test gave an average Vickers hardness of 45 GPa. The average fracture toughness was measured as 4.5 MPa m1/2. We also measured the hardness of the cubic boron nitride and sapphire single crystals for comparison ...
Duanwei He, Yusheng Zhao, L. Daemen, J. Qian, T. D. Shen, T. W. Zerda   +5 more
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Laser deposited cubic boron nitride films

Carbon, 1990
ABSTRACTWe report the successful growth of cubic boron nitride thin films on single crystal 100 silicon by using pulsed excimer laser ablation of a hexagonal boron nitride bulk target. Optical emission spectra were obtained during the film deposition giving insight into the deposition mechanism.
Gary L. Doll, Jeffrey A. Sell, Lourdes Salamanca-riba, Ashwin K. Ballal   +3 more
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