Laser heating setup for diamond anvil cells for in situ synchrotron and in house high and ultra-high pressure studies

2019 ◽  
Vol 90 (10) ◽  
pp. 104501 ◽  
Author(s):  
T. Fedotenko ◽  
L. Dubrovinsky ◽  
G. Aprilis ◽  
E. Koemets ◽  
A. Snigirev ◽  
...  
Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 511
Author(s):  
Dajian Huang ◽  
Caoping Niu ◽  
Bingmin Yan ◽  
Bo Gao ◽  
Lailei Wu ◽  
...  

The exploration of the vast phase space of transition metal nitrides is critical for discovering novel materials and potential technological applications. Manganese mononitride with a tetragonal structure (space group I4/mmm) was synthesized in a laser-heating diamond anvil cell, which could be quenched to ambient pressure. The bulk modulus of 173 GPa was measured using in situ high-pressure diffraction, and the axial compressibility shows that, under pressure, the a direction is much more compressible than the c direction in tetragonal MnN. DFT results with correction of the on-site repulsion (GGA + U) confirm that tetragonal MnN is energetically stable and antiferromagnetic. This study highlights the need to include on-site repulsion to understand 3d metal nitrides.


2019 ◽  
Vol 90 (12) ◽  
pp. 123901 ◽  
Author(s):  
Thomas Meier ◽  
Anand Prashant Dwivedi ◽  
Saiana Khandarkhaeva ◽  
Timofey Fedotenko ◽  
Natalia Dubrovinskaia ◽  
...  

2013 ◽  
Vol 84 (2) ◽  
pp. 025118 ◽  
Author(s):  
Lowell Miyagi ◽  
Waruntorn Kanitpanyacharoen ◽  
Selva Vennila Raju ◽  
Pamela Kaercher ◽  
Jason Knight ◽  
...  

2013 ◽  
Vol 21 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Sylvain Petitgirard ◽  
Ashkan Salamat ◽  
Pierre Beck ◽  
Gunnar Weck ◽  
Pierre Bouvier

An overview of several innovations regardingin situlaser-heating techniques in the diamond anvil cell at the high-pressure beamline ID27 of the European Synchrotron Radiation Facility is presented. Pyrometry measurements have been adapted to allow simultaneous double-sided temperature measurements with the installation of two additional online laser systems: a CO2and a pulsed Nd:YAG laser system. This reiteration of laser-heating advancements at ID27 is designed to pave the way for a new generation of state-of-the-art experiments that demand the need for synchrotron diffraction techniques. Experimental examples are provided for each major development. The capabilities of the double pyrometer have been tested with the Nd:YAG continuous-wave lasers but also in a time-resolved configuration using the nanosecond-pulsed Nd:YAG laser on a Fe sample up to 180 GPa and 2900 K. The combination of time-resolved X-ray diffraction within situCO2laser heating is shown with the crystallization of a high-pressure phase of the naturally found pyrite mineral MnS2(11 GPa, 1100–1650 K).


2000 ◽  
Vol 33 (4) ◽  
pp. 1175-1176 ◽  
Author(s):  
Stefan Carlson

ThePm\bar{3}mtoR\bar{3}chigh-pressure transition of NbO2F has been studied in detail using diamond anvil cells and synchrotron X-ray radiation. The transition starts at 0.28 GPa and is complete at 0.65 GPa. The bulk modulus for the cubic phase became 24.8 (11) GPa, which is roughly two times higher than for the rhombohedral phase.


2004 ◽  
Vol 75 (10) ◽  
pp. 3302-3306 ◽  
Author(s):  
Jung-Fu Lin ◽  
Mario Santoro ◽  
Viktor V. Struzhkin ◽  
Ho-kwang Mao ◽  
Russell J. Hemley

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