Results 51 to 60 of about 14,400,955 (339)

Antiferromagnetism in hexagonal graphene structures: Rings versus dots [PDF]

open access: yesPhysical Review B, 2013
6 pages.
Grujić, Marko   +2 more
openaire   +2 more sources

Nanostructural crystallization of metals

open access: yesЛитьë и металлургия, 2021
Based on thermodynamic calculations, it is shown that metal crystallization is an equilibrium nanostructural process. At the beginning, trigonal or tetragonal structure-forming nanocrystals are formed from elementary nanocrystals.
E. I. Marukovich   +2 more
doaj   +1 more source

Coordinated preparation of small-sized hydroxylated hexagonal boron nitride by ball milling and heat treatment [PDF]

open access: yesJournal of Hebei University of Science and Technology
To address the issue of limited application of hexagonal boron nitride due to the low content of active groups on the surface, small-sized hydroxylated hexagonal boron nitride was prepared by using two methods: ball milling and high-temperature heating ...
Chang’an XU, Yang YANG, Qunfeng LIU
doaj   +1 more source

Image translation and rotation on hexagonal structure [PDF]

open access: yes, 2006
Image translation and rotation are becoming essential operations in many application areas such as image processing, computer graphics and pattern recognition.
He, X, Hur, N, Jia, W, Kim, J, Wu, Q
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Room-temperature multiferroic hexagonal LuFeO$_3$ films [PDF]

open access: yes, 2013
The crystal and magnetic structures of single-crystalline hexagonal LuFeO$_3$ films have been studied using x-ray, electron and neutron diffraction methods.
Balke, Nina   +17 more
core   +3 more sources

Hexagonal boron nitride is an indirect bandgap semiconductor [PDF]

open access: yesNature Photonics, 2015
Hexagonal boron nitride is a wide bandgap semiconductor with very high thermal and chemical stability that is used in devices operating under extreme conditions.
G. Cassabois, P. Valvin, B. Gil
semanticscholar   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Characteristics studies of molecular structures in drugs

open access: yesSaudi Pharmaceutical Journal, 2017
In theoretical medicine, topological indices are defined to test the medicine and pharmacy characteristics, such as melting point, boiling point, toxicity and other biological activities.
Wei Gao   +3 more
doaj   +1 more source

Lattice instabilities in hexagonal NiSi: A NiAs prototype structure [PDF]

open access: yes, 2010
We report a first-principles study of the hexagonal NiSi phase with the B81 strukturbericht designation. This structure, reported by Föll Philos. Mag. A 45, 31 1982, d’Heurle J. Appl. Phys. 55, 4208 1984, and Dai Appl. Phys. Lett.
Connétable, Damien, Thomas, Olivier
core   +4 more sources

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