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Title: Melting point variation with pressure and material synthesis by a laser heated diamond anvil cell
Authors: Meenakshi, S
Vijayakumar, V
Godwal, B K
Keywords: Diamond anvil cell;Melting point;Material synthesis;High pressure;High temperature
Issue Date: Jun-2006
Publisher: NISCAIR-CSIR, India
IPC Code: G01N 25/04, B0lJ 3/06
Abstract: The details of a high temperature-high pressure (HT-HP) facility based on the coupling of the laser heating by diamond anvil cell are described. The measured melting curve of platinum up to 12 GPa pressures is compared with existing piston-cylinder data and with theoretical calculations. The reasonable agreement reveals the utility of this technique for the reliable measurements of high temperature-high pressure phase diagrams and melting curves for materials. The suitability of hexamethylenetetramine (HMT) as a precursor for the synthesis of C3N4 at HT-HP, has been investigated. It is conjectured that CNx, (C3N4) or C:H is formed at HT-HP, but is not quenchable.
Page(s): 440-445
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.44(06) [June 2006]

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