Results 21 to 30 of about 30,580 (243)

Quantum-Sized Zinc Oxide Nanoparticles Synthesised within Mesoporous Silica (SBA-11) by Humid Thermal Decomposition of Zinc Acetate

open access: yesCrystals, 2020
A modified facile method is presented to synthesise quantum-sized zinc oxide nanoparticles within the pores of a mesoporous silica host (SBA-11). This method eliminates the 3 h alcohol reflux and the basic solution reaction steps of zinc acetate.
Tariq Aqeel, Heather F. Greer
doaj   +1 more source

Melem (2,5,8-Triamino-tri-s-triazine), an Important Intermediate during Condensation of Melamine Rings to Graphitic Carbon Nitride:  Synthesis, Structure Determination by X-ray Powder Diffractometry, Solid-State NMR, and Theoretical Studies [PDF]

open access: yes, 2003
Single-phase melem (2,5,8-triamino-tri-s-triazine) C6N7(NH2)3 was obtained as a crystalline powder by thermal treatment of different less condensed C−N−H compounds (e.g., melamine C3N3(NH2)3, dicyandiamide H4C2N4, ammonium dicyanamide NH4[N(CN)2], or ...
Irran, Elisabeth   +5 more
core   +1 more source

Crystallization of Fe-Based Bulk Amorphous Alloys

open access: yesArchives of Metallurgy and Materials, 2015
The aim of this paper is to present the results of crystallization studies for the bulk amorphous (Fe0.61Co0.10Zr0.025Hf0.025 Ti0.02W0.02B0.20)98Y2, Fe61Co10TixY6B20, Fe61Co10Ti2Y7B20 alloys.
Błoch K.   +3 more
doaj   +1 more source

Tilt boundary formation in GeSi/Si (001) vicinal heterosystem

open access: yesModern Electronic Materials, 2015
The structural state of GexSi1-x films grown on Si substrates with the vicinal orientation (1 1 13) has been studied. The (1 1 13) orientation has been obtained by rotating the singular plane (001) around the [1 1 ¯0] axis.
Aleksei V. Kolesnikov   +3 more
doaj   +1 more source

INVESTIGATION OF HETEROSTRUCTURES 3C-SIC/15R-SIC [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
The subject of study. Investigation results for 3C-SiC layers, obtained on single-crystal 15R-SiC substrates by sublimation epitaxy in vacuum are presented. Materials and methods.
S. P. Lebedev   +4 more
doaj   +1 more source

Terrace grading of SiGe for high-quality virtual substrates [PDF]

open access: yes, 2002
Silicon germanium (SiGe) virtual substrates of final germanium composition x = 0.50 have been fabricated using solid-source molecular beam epitaxy with a thickness of 2 µm.
Capewell, Adam Daniel   +3 more
core   +1 more source

Two-phase coexistence in Fe–Ni alloys synthesized by ball milling [PDF]

open access: yes, 1996
We used mechanical alloying with a Spex 8000 mixer/mill to synthesize a series of Fe100–xNix alloys from x=0 to x=49. The Spex mill was modified so that it could also operate at a reduced milling intensity, and we compared the alloys synthesized after ...
Fultz, B., Hong, L. B.
core   +1 more source

Electropolishing Procedure Dedicated to In-Depth Stress Measurements with X-Ray Diffractometry

open access: yesFatigue of Aircraft Structures, 2016
Electropolishing is the sole reliable method of removing the outer layer of the specimen without changing its stress state. This feature of the electropolishing procedure allows researchers to investigate the in-depth stress distribution.
Gadalińska Elżbieta, Wronicz Wojciech
doaj   +1 more source

Preparation and Characterization of Solid Complexes of Naphtoquinone and Hydroxypropyl-b-Cyclodextrin

open access: yesMolecules, 2000
The formation of an inclusion compound between a naphthoquinone derivative (I) and HP-ß-CD was studied in solid state by X-ray diffractometry, DSC, and IR.
Marcela Linares   +2 more
doaj   +1 more source

Chemical Environment Selectivity in Mössbauer Diffraction from 57Fe3Al [PDF]

open access: yes, 1997
Mössbauer diffraction was used to measure different autocorrelation functions for 57Fe atoms in different chemical environments. The sample was polycrystalline 57Fe3Al with the ordered DO3 structure.
Fultz, B., Stephens, T. A.
core   +1 more source

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