NDLI: Phase transformations in opals under thermal and thermobaric actions

Content Provider	Springer Nature Link
Author	Somenkov, V. A. Agafov, S. S. Shushuv, M. N. Filonenko, V. P. Masalov, V. M. Emelchenko, G. A.
Copyright Year	2017
Abstract	The ultrasmall- and wide-angle neutron diffraction methods are used to study multiscale structures and phase transformations in synthetic opals at different temperatures and pressures (as high as 1500°C and 10 GPa, respectively). Monodisperse colloidal particles of amorphous silica dioxide (a-SiO$_{2}$) with an average diameter of 150‒1700 nm whose deviation from the mean is less than 5% are synthesized to fabricate the samples. Opal matrices up to 3 cm thick are obtained via the natural sedimentation of a SiO$_{2}$-globule suspension followed by drying and heat treatment. Neutron-diffraction processes are investigated using a DISK multidetector superposition diffractometer mounted at the IR-8 reactor of the National Research Centre Kurchatov Institute at a neutron wavelength of 1.668 Å. Ultrasmall-angle diffraction experiments are performed in the two-crystal mode of a STOIK spectrometer.
Starting Page	634
Ending Page	638
Page Count	5
File Format	PDF
ISSN	10274510
Journal	Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
Volume Number	11
Issue Number	3
e-ISSN	18197094
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-06-15
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	neutron diffraction neutron filters diamond materials Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Surfaces, Coatings and Films

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