scholarly journals In situ high temperature spectroscopic study of liquid inclusions and hydroxyl groups in high purity natural quartz

2021 ◽  
Vol 174 ◽  
pp. 107238
Author(s):  
Bartłomiej A. Gaweł ◽  
Anna Ulvensøen ◽  
Katarzyna Łukaszuk ◽  
Astrid Marie F. Muggerud ◽  
Andreas Erbe
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
High Purity ◽  
Hydroxyl Groups ◽  
Natural Quartz

An in situ spectroscopic study of the local structure of oxyfluoride melts: NMR insights into the speciation in molten LiF–LaF3–Li2O systems

2015 ◽  
Vol 44 (2) ◽  
pp. 522-529 ◽  
Author(s):  
Anne-Laure Rollet ◽  
Haruaki Matsuura ◽  
Catherine Bessada
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
Local Structure

An in situ high temperature NMR technique evidences the local structure of lithium lanthanum oxyfluoride melts.

A multi-spectroscopic study of luminescence sensitivity changes in natural quartz induced by high-temperature annealing

2001 ◽  
Vol 34 (5) ◽  
pp. 722-731 ◽  
Author(s):  
T Schilles ◽  
N R J Poolton ◽  
E Bulur ◽  
L Bøtter-Jensen ◽  
A S Murray ◽  
...  
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
High Temperature Annealing ◽  
Natural Quartz ◽  
Sensitivity Changes

In situ high-temperature X-ray diffraction and spectroscopic study of fibroferrite, FeOH(SO4)·5H2O

2016 ◽  
Vol 43 (8) ◽  
pp. 587-595 ◽  
Author(s):  
Gennaro Ventruti ◽  
Giancarlo Della Ventura ◽  
Nicola Corriero ◽  
Daniele Malferrari ◽  
Alessandro F. Gualtieri ◽  
...  
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals In situ high-temperature Mössbauer spectroscopic study of carbon nanotube–Fe–Al2O3 nanocomposite powder

2009 ◽  
Vol 494 (1-2) ◽  
pp. 86-93 ◽  
Author(s):  
Valdirene G. de Resende ◽  
Alain Peigney ◽  
Eddy De Grave ◽  
Christophe Laurent
Keyword(s):  
High Temperature ◽  
Carbon Nanotube ◽  
Spectroscopic Study ◽  
Nanocomposite Powder

scholarly journals Structural evolution of water and hydroxyl groups during thermal, mechanical and chemical treatment of high purity natural quartz

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 29018-29030
Author(s):  
Bartłomiej A. Gaweł ◽  
Anna Ulvensøen ◽  
Katarzyna Łukaszuk ◽  
Bjørnar Arstad ◽  
Astrid Marie F. Muggerud ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
High Purity ◽  
Chemical Treatment ◽  
Structural Evolution ◽  
Hydroxyl Groups ◽  
Natural Quartz ◽  
Oh Groups ◽  
Micron Size

In dry quartz stable closed liquid micron-size inclusions and newly formed OH groups were observed after thermal treatment.

The reaction of amorphous Ni-Nb films with Si in the presence of a native SiO2 layer

1990 ◽  
Vol 48 (4) ◽  
pp. 664-665
Author(s):  
N. Rozhanski ◽  
A. Barg
Keyword(s):  
High Temperature ◽  
Crystallization Temperature ◽  
Diffusion Barriers ◽  
Sio2 Layer ◽  
Si Substrate ◽  
Cross Sectional ◽  
Plan View ◽  
Temperature Range ◽  
Sputter Deposited

Amorphous Ni-Nb alloys are of potential interest as diffusion barriers for high temperature metallization for VLSI. In the present work amorphous Ni-Nb films were sputter deposited on Si(100) and their interaction with a substrate was studied in the temperature range (200-700)°C. The crystallization of films was observed on the plan-view specimens heated in-situ in Philips-400ST microscope. Cross-sectional objects were prepared to study the structure of interfaces.The crystallization temperature of Ni5 0 Ni5 0 and Ni8 0 Nb2 0 films was found to be equal to 675°C and 525°C correspondingly. The crystallization of Ni5 0 Ni5 0 films is followed by the formation of Ni6Nb7 and Ni3Nb nucleus. Ni8 0Nb2 0 films crystallise with the formation of Ni and Ni3Nb crystals. No interaction of both films with Si substrate was observed on plan-view specimens up to 700°C, that is due to the barrier action of the native SiO2 layer.

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