Structural and magnetic properties of ceramics prepared by high-pressure high-temperature sintering of manganese-doped gallium nitride nanopowders

2016 ◽  
Vol 36 (4) ◽  
pp. 1033-1044 ◽  
Author(s):  
Mariusz Drygas ◽  
Jerzy F. Janik ◽  
Jacek Gosk ◽  
Stanislaw Gierlotka ◽  
Bogdan Palosz ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Gallium Nitride ◽  
High Temperature ◽  
High Pressure High Temperature ◽  
Structural And Magnetic Properties

scholarly journals Ferromagnetic ε-Fe2MnN: High-Pressure Synthesis, Hardness and Magnetic Properties

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1993
Author(s):  
Ulrich Schwarz ◽  
Kai Guo ◽  
William P. Clark ◽  
Ulrich Burkhardt ◽  
Matej Bobnar ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
High Temperature ◽  
Iron Nitride ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
High Pressure High Temperature ◽  
Manganese Nitride ◽  
Pressure Synthesis ◽  
Iron Manganese

The iron manganese nitride Fe2MnN was obtained by high-pressure–high-temperature synthesis from ζ-Fe2N and elemental Mn at 15(2) GPa and 1573(200) K. The phase crystallizes isostructural to binary ε-Fe3N. In comparison to the corresponding binary iron nitride, the microhardness of ε-Fe2MnN is reduced to 6.2(2) GPa. Above about 800 K the ternary compound decomposes exothermally under loss of nitrogen. ε-Fe2MnN is ferromagnetic with a Curie temperature of roughly 402 K.

scholarly journals High-pressure Synthesis of New layered Oxyhalide Perovskites

2014 ◽  
Vol 70 (a1) ◽  
pp. C762-C762
Author(s):  
Yoshihiro Tsujimoto ◽  
Yoshitaka Matsushita ◽  
Kazunari Yamaura ◽  
Tetsuo Uchikoshi
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
High Temperature ◽  
Transition Metal Oxides ◽  
Temperature Reaction ◽  
High Temperature Reaction ◽  
Square Planar ◽  
Pressure Synthesis ◽  
Structural And Magnetic Properties ◽  
High Valent

The development of transition metal oxides with perovskite-based structure has stimulated the search for mixed anion systems such as oxynitrides, oxyhalides and oxysulfides because incorporation of two different anions in one structure offers further opportunity to effectively induce chemical and physical properties that the pure oxides cannot possess. Such mixed anion phases, however, are difficult to be synthesized by a conventional high-temperature reaction. In this study, we have employed a high pressure technique to overcome this issue, and succeessfully synthesized a series of new layered oxhalide compounds. We present structural and magnetic properties of high-valent nickel oxyhalides Sr2NiO3X (X = F, Cl), and square-planar coordinated oxychlorides Sr2MO2Cl2 (Mn, Ni) and Ba2PdO2Cl2, isostructural with superconducting parent compund Ca2CuO2Cl2.

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