AUTHOR=Li Hui , Ma Shuailing , Ye Jili , Wang Xin 

TITLE=Structural Stability of Pyrochlore Manganate In2Mn2O7 Under High Pressure

JOURNAL=Frontiers in Physics

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.783136

DOI=10.3389/fphy.2021.783136

ISSN=2296-424X

ABSTRACT=<p>The pyrochlore manganate In<sub>2</sub>Mn<sub>2</sub>O<sub>7</sub> 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, In<sub>2</sub>Mn<sub>2</sub>O<sub>7</sub> with pyrochlore structure was successfully prepared by high temperature and high pressure combined with the sol–gel method, and the <italic>in situ</italic> high-pressure X-ray diffraction experiment was carried out on it. The results showed that the structure of In<sub>2</sub>Mn<sub>2</sub>O<sub>7</sub> 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 In<sub>2</sub>Mn<sub>2</sub>O<sub>7</sub> in extreme environments.</p>