Thin Films: Topotactic Metal–Insulator Transition in Epitaxial SrFeOx Thin Films (Adv. Mater. 37/2017)

The real-time evolution of the electronic phase during the topotactic phase transformation in a SrFeO_x thin film is shown. In article number 1606566, Woo Seok Choi and co-workers report the metal–insulator transition in epitaxial SrFeO_x thin films. A pressure–temperature phase diagram of the topotactic transformation is constructed based on real-time optical spectroscopy and thermodynamic calculation.

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