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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session: Correlated Electrons 1

TT 17.34: Poster

Montag, 1. April 2019, 15:00–18:30, Poster D

In−situ-SQUID studies of Fe₃O₄ and V₂O₃ upon electrochemical lithiation — •Lukas Deeg, Elisa Thauer, Michael Richter, and Rüdiger Klingeler — Kirchhoff Institut für Physik, Universität Heidelberg, D-69120 Heidelberg, Germany

A re-usable in-situ-SQUID electrochemical cell for magnetisation studies during electrochemical cycling is presented. The proof of function is demonstrated by recording reversible magnetisation changes in Li_xFe₃O₄ nanoparticles upon electrochemical cycling. The data imply the transition from inverse spinel structure (x=0) to a rocksalt phase (x=2). In addition, the setup is utilised to study the effect of lithiation on the Mott-Hubbard transition in V₂O₃.