scholarly journals Multianvil High-Pressure/High-Temperature Synthesis and Characterization of multiferroic HP-Co3TeO6

Author(s):  
Gunter Heymann ◽  
Elisabeth Selb ◽  
Toni Buttlar ◽  
Oliver Janka ◽  
Martina Tribus ◽  
...  

By high-pressure/high-temperature multianvil synthesis a new high-pressure (HP) phase of Co3TeO6 was obtained. The compound crystallizes in the acentric trigonal crystal system of the Ni3TeO6-type structure with space group R3...

2020 ◽  
Vol 59 (6) ◽  
pp. 3579-3584
Author(s):  
Sun Woo Kim ◽  
Xiaoyan Tan ◽  
Corey E. Frank ◽  
Zheng Deng ◽  
Huaiyu Wang ◽  
...  

1998 ◽  
Vol 10 (6) ◽  
pp. 1530-1537 ◽  
Author(s):  
Hervé Hubert ◽  
Laurence A. J. Garvie ◽  
Bertrand Devouard ◽  
Peter R. Buseck ◽  
William T. Petuskey ◽  
...  

ChemInform ◽  
2010 ◽  
Vol 29 (34) ◽  
pp. no-no
Author(s):  
H. HUBERT ◽  
L. A. J. GARVIE ◽  
B. DEVOUARD ◽  
P. R. BUSECK ◽  
W. T. PETUSKEY ◽  
...  

2018 ◽  
Vol 73 (12) ◽  
pp. 979-985 ◽  
Author(s):  
Elisabeth Selb ◽  
Martina Tribus ◽  
Gunter Heymann

AbstractAt ambient conditions, PdSe2 dichalcogenides crystallize in the layered PdS2-type structure. If pressure is applied, the coordination number of palladium atoms increases and the three-dimensional pyrite-type structure with octahedral (PdSe6)4− coordination geometry is observed. For the first time, single crystals of a pyrite-type PdSe2 modification could be obtained and characterized, which were grown by multianvil high-pressure/high-temperature synthesis at 7.5 GPa and 1023 K. The crystals show the expected pyrite-type space group Pa3̅ (no. 205) and refinement results of a=613.26(3) pm, R1=0.0233, and wR2=0.0247 (all data) were received for HP-Pd0.84(1)Se2. The single-crystal data revealed significant defect formation on the palladium site with 16% vacancies, which is in line with the orthorhombic PdX2-type high-pressure polymorphs HP-Pd0.94(1)S2 and HP-Pd0.88(1)Se2. The tendency of vacancy formation on the palladium site could also be verified by EDX measurements.


2009 ◽  
Vol 64 (5) ◽  
pp. 487-490 ◽  
Author(s):  
Steffen Pfeiffer ◽  
Martin Jansen

The title compound has been synthesized under 4 GPa and at 500 ◦C from Na2O andMnO as starting materials. Rietveld refinement of the X-ray powder pattern indicates that Na6MnO4 is isostructural to Na6ZnO4 and thus is representing the second manifestation of an “isolated” [MnO4]6− anion after Na14Mn2O9. The compound crystallizes in the hexagonal system in space group P63mc (no. 186) with a = 7.6631(2) and c = 5.9013(2) ° A, V = 300.1 °A3, and Z = 2.


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