Results 31 to 40 of about 19,767 (230)

Low pressure growth of cubic boron nitride films [PDF]

, 1997
A method for forming thin films of cubic boron nitride on substrates at low pressures and temperatures. A substrate is first coated with polycrystalline diamond to provide a uniform surface upon which cubic boron nitride can be deposited by chemical ...
Ong, Tiong P., Shing, Yuh-Han
core   +1 more source

Iron oxide doped boron nitride nanotubes: structural and magnetic properties

, 2010
A first-principles formalism is employed to investigate the interaction of iron oxide (FeO) with a boron nitride (BN) nanotube. The stable structure of the FeO-nanotube has Fe atoms binding N atoms, with bond length of roughly $\sim$2.1 \AA, and binding ...
Alan B de Oliveira, Daniel L Rocco, Fjellvåg H, Lee C H, Min Y, Ronaldo J C Batista, Skomski R, Soler J M, Xiang H J, Zaoui A   +9 more
core   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

A new generation, promising engineering material: Cubic boron nitride c-BN

Hittite Journal of Science and Engineering, 2015
In order to meet the design requirements and expanding demands in various engineering fields, it is essential to incorporate new technological improvements in material sciences into existing processes and applications.
Baris Cetin, Goksel Durkaya, Hakan Kaplan   +2 more
doaj   +1 more source

Optical Properties of BN in the cubic and in the layered hexagonal phases

, 2001
Linear optical functions of cubic and hexagonal BN have been studied within first principles DFT-LDA theory. Calculated energy-loss functions compare well with experiments and previous theoretical results both for h-BN and for c-BN.
Cappellini, Giancarlo, Onida, Giovanni, Palummo, Maurizia, Satta, Guido   +3 more
core   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Research Update: Direct conversion of h-BN into pure c-BN at ambient temperatures and pressures in air

APL Materials, 2016
We report a direct conversion of hexagonal boron nitride (h-BN) into pure cubic boron nitride (c-BN) by nanosecond laser melting at ambient temperatures and atmospheric pressure in air.
Jagdish Narayan, Anagh Bhaumik
doaj   +1 more source

Properties of Al contacts to Si surface exposed in the course of plasma etching of previously grown nanocrystalline c-BN film

Journal of Telecommunications and Information Technology, 2005
Properties of Al electric contacts to Si(p) surface exposed to fluorine-based plasma etching of nanocrystalline cubic boron nitride (c-BN) film grown previously were studied and compared to the properties of Al contacts fabricated on pristine or dry ...
Piotr Firek, Aleksander Werbowy, Jan Szmidt, Andrzej R. Olszyna   +3 more
doaj   +1 more source

Electrodischarge Drilling of Microholes in c-BN

Micromachines, 2020
Cubic boron nitride (c-BN) is a “difficult-to-cut” material. High precision machining of this material is problematic because it is difficult to control the material removal rate and maintain acceptable accuracy.
Dominik Wyszynski, Wojciech Bizon, Krzysztof Miernik   +2 more
doaj   +1 more source

Thermodynamic aspects of materials' hardness: prediction of novel superhard high-pressure phases

, 2011
In the present work we have proposed the method that allows one to easily estimate hardness and bulk modulus of known or hypothetical solid phases from the data on Gibbs energy of atomization of the elements and corresponding covalent radii.
Aleshin V. G., Babichev A. P., Baron N. M., Bulakh A. G., Domnich V., Emsley J., Glushko V. P., Goble R. J., Gurvich L. V., Haines J., Knunyants I. L., Kurdyumov A. V., Mukhanov V. A., Novikov N. V., O. O. Kurakevych, Poliakov V. P., Povarennykh A. S., Rabinovich V. A., Teter D. M., Trim D. L., V. A. Mukhanov, V. L. Solozhenko   +21 more
core   +1 more source