scholarly journals Structural Stability of Pyrochlore Manganate In2Mn2O7 Under High Pressure

2021 ◽  
Vol 9 ◽  
Author(s):  
Hui Li ◽  
Shuailing Ma ◽  
Jili Ye ◽  
Xin Wang
Keyword(s):  
High Pressure ◽  
Structural Stability ◽  
Spin Transport ◽  
Sol Gel ◽  
Extreme Environments ◽  
Pyrochlore Structure ◽  
X Ray Diffraction ◽  
Electron Effective Mass ◽  
X Ray

The pyrochlore manganate In2Mn2O7 is a very promising ferromagnetic semiconductor material, which has a good application prospect in spin transport due to its very low electron effective mass, high Curie temperature, and structural stability. In this paper, In2Mn2O7 with pyrochlore structure was successfully prepared by high temperature and high pressure combined with the sol–gel method, and the in situ high-pressure X-ray diffraction experiment was carried out on it. The results showed that the structure of In2Mn2O7 was very stable in the pressure range of 0–29.0 GPa, and its bulk modulus was given. This lays a foundation for the application of In2Mn2O7 in extreme environments.

In situ high-pressure synchrotron X-ray diffraction study of the structural stability in the intermetallic compound Mn2 Sb

2012 ◽  
Vol 249 (11) ◽  
pp. 2239-2243 ◽  
Author(s):  
Z. H. Yu ◽  
C. Y. Li ◽  
H. Z. Liu
Keyword(s):  
High Pressure ◽  
Intermetallic Compound ◽  
Diffraction Study ◽  
Structural Stability ◽  
X Ray Diffraction ◽  
X Ray

High pressure and high temperature in situ X-ray diffraction study on the structural stability of tantalum disilicide

2013 ◽  
Vol 157 ◽  
pp. 1-5 ◽  
Author(s):  
C.Y. Li ◽  
Z.H. Yu ◽  
H.Z. Liu ◽  
T.Q. Lü
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Diffraction Study ◽  
Structural Stability ◽  
X Ray Diffraction ◽  
X Ray

Structural stability of the Li-ion conductor Li7La3Zr2O12 investigated by high-pressure in-situ X-ray diffraction and Raman spectroscopy

2018 ◽  
Vol 107 ◽  
pp. 361-365 ◽  
Author(s):  
Eiichi Hirose ◽  
Ken Niwa ◽  
Kunimitsu Kataoka ◽  
Junji Akimoto ◽  
Masashi Hasegawa
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
Structural Stability ◽  
X Ray Diffraction ◽  
Ion Conductor ◽  
X Ray ◽  
Li Ion

In situ high-pressure synchrotron X-ray diffraction study of the structural stability in NdVO4 and LaVO4

2014 ◽  
Vol 50 ◽  
pp. 279-284 ◽  
Author(s):  
D. Errandonea ◽  
C. Popescu ◽  
S.N. Achary ◽  
A.K. Tyagi ◽  
M. Bettinelli
Keyword(s):  
High Pressure ◽  
Diffraction Study ◽  
Structural Stability ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Pressure-induced Jahn-Teller Switch in the Homoleptic Hybrid Perovskite [(CH3)2NH2]Cu(HCOO)3: Orbital Reordering by Unconventional Degrees of Freedom

2021 ◽  
Author(s):  
Rebecca Scatena ◽  
Michał Andrzejewski ◽  
Roger D Johnson ◽  
Piero Macchi
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Coordination Polymer ◽  
Degrees Of Freedom ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hybrid Perovskite ◽  
Jahn Teller

Through in-situ, high-pressure x-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH3)2NH2]Cu(HCOO)3 undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct...

PHASE TRANSITION IN LAYERED PEROVSKITE LIKE MANGANATE Ca3Mn2O7 UNDER HIGH PRESSURE

2001 ◽  
Vol 15 (18) ◽  
pp. 2491-2497 ◽  
Author(s):  
J. L. ZHU ◽  
L. C. CHEN ◽  
R. C. YU ◽  
F. Y. LI ◽  
J. LIU ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Diamond Anvil Cell ◽  
The Other ◽  
Layered Perovskite ◽  
X Ray Diffraction ◽  
Two Phase ◽  
X Ray ◽  
Diamond Anvil

In situ high pressure energy dispersive X-ray diffraction measurements on layered perovskite-like manganate Ca 3 Mn 2 O 7 under pressures up to 35 GPa have been performed by using diamond anvil cell with synchrotron radiation. The results show that the structure of layered perovskite-like manganate Ca 3 Mn 2 O 7 is unstable under pressure due to the easy compression of NaCl-type blocks. The structure of Ca 3 Mn 2 O 7 underwent two phase transitions under pressures in the range of 0~35 GPa. One was at about 1.3 GPa with the crystal structure changing from tetragonal to orthorhombic. The other was at about 9.5 GPa with the crystal structure changing from orthorhombic back to another tetragonal.

scholarly journals The Structural Stability of Soft Magnetic Fe-Co-Zr-W-B Metallic Glasses Investigated by the in-situ X-ray Diffraction

2014 ◽  
Vol 126 (1) ◽  
pp. 66-67
Author(s):  
S. Michalik ◽  
J. Bednarcik ◽  
P. Pawlik ◽  
R. Matija ◽  
P. Sovak
Keyword(s):  
Structural Stability ◽  
Metallic Glasses ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray

scholarly journals In situ observation of phase changes of a silica-supported cobalt catalyst for the Fischer–Tropsch process by the development of a synchrotron-compatible in situ/operando powder X-ray diffraction cell

2018 ◽  
Vol 25 (6) ◽  
pp. 1673-1682 ◽  
Author(s):  
Adam S. Hoffman ◽  
Joseph A. Singh ◽  
Stacey F. Bent ◽  
Simon R. Bare
Keyword(s):  
High Pressure ◽  
Elevated Pressure ◽  
Phase Changes ◽  
In Situ Observation ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
X Ray ◽  
And Performance ◽  
Co Nanoparticles

In situ characterization of catalysts gives direct insight into the working state of the material. Here, the design and performance characteristics of a universal in situ synchrotron-compatible X-ray diffraction cell capable of operation at high temperature and high pressure, 1373 K, and 35 bar, respectively, are reported. Its performance is demonstrated by characterizing a cobalt-based catalyst used in a prototypical high-pressure catalytic reaction, the Fischer–Tropsch synthesis, using X-ray diffraction. Cobalt nanoparticles supported on silica were studied in situ during Fischer–Tropsch catalysis using syngas, H2 and CO, at 723 K and 20 bar. Post reaction, the Co nanoparticles were carburized at elevated pressure, demonstrating an increased rate of carburization compared with atmospheric studies.

Compressibility trends of the clinopyroxenes, and in-situ high-pressure single-crystal X-ray diffraction study of jadeite

2008 ◽  
Vol 93 (1) ◽  
pp. 198-209 ◽  
Author(s):  
A. C. McCarthy ◽  
R. T. Downs ◽  
R. M. Thompson
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray
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