Topotactic fluorination of perovskite strontium ruthenate thin films using polyvinylidene fluoride

K. Kawahara, A. Chikamatsu, T. Katayama, T. Onozuka, D. Ogawa, K. Morikawa, E. Ikenaga, Y. Hirose, I. Harayama, D. Sekiba, T. Fukumura, T. Hasegawa

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We investigated the polyvinylidene fluoride (PVDF)-mediated topotactic fluorination of two perovskite ruthenate thin films with different crystallographic structures, non-layered perovskite SrRuO3 and layered perovskite Sr2RuO4. While the former ruthenate did not react with PVDF, the latter was fluorinated to form Sr2RuO3F2 with a structure that exhibited a largely expanded c-axis. These results indicate that fluorine ions are preferentially inserted into the SrO rocksalt blocks in perovskite ruthenates, and that the oxygen atoms in the precursor oxide were partially removed upon fluorination. Finally, we noted that the Sr2RuO3F2 film was insulating, with a resistivity of 4.1 × 10 Ω cm at 300 K. It should be noted that this resistivity is five orders of magnitude higher than that of the metallic Sr2RuO4 film (6.7 × 104 Ω cm).

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalCrystEngComm
Volume19
Issue number2
DOIs
Publication statusPublished - 2017 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Topotactic fluorination of perovskite strontium ruthenate thin films using polyvinylidene fluoride'. Together they form a unique fingerprint.

  • Cite this

    Kawahara, K., Chikamatsu, A., Katayama, T., Onozuka, T., Ogawa, D., Morikawa, K., Ikenaga, E., Hirose, Y., Harayama, I., Sekiba, D., Fukumura, T., & Hasegawa, T. (2017). Topotactic fluorination of perovskite strontium ruthenate thin films using polyvinylidene fluoride. CrystEngComm, 19(2), 313-317. https://doi.org/10.1039/C6CE02358D