Magneto-Structural Coupling Enables Cryogenic Cation Redistribution in a Spinel Oxide
Yifeng Han, Yixing Zhao, Yunbo Ou, Feiran Shen et autres
Ionic transport in oxides is generally frozen at cryogenic temperatures, where thermal energy lies far below typical cation-migration barriers. Neutron powder diffraction reveals progressive Fe/Mg redistribution between tetrahedral (A) and octahedral (B) sites in the spinel Mg0.5Fe0.5TiFeO4 upon cooling from 200 K …
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arXiv (Cornell University)