Magnetic coupling and relaxation in Fe[N(SiPh2Me)2]2 molecular magnet

E. Kuzmann, G. Zoppellaro, J. Pechousek, Z. Klencsár, L. Machala, J. Tucek, Z. Homonnay, J. Cuda, R. Szalay, M. Pápai

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Abstract

In Fe[N(SiPh2Me)2]2 molecular magnet, an extraordinary B ≈ 92 T hyperfine field was found in the 5 K 57Fe Mössbauer spectrum under an external magnetic field of 0.1 T. This evidences the presence of an unquenched orbital angular moment at the central iron atom. Fe[N(SiPh2Me)2]2 complex is thus shown to represent a further example of low-coordinate iron complexes where quasi free-ion magnetism visualizes itself through an unquenched orbital moment. Magnetization measurements and hysteresis in magnetization indicated exchange coupling and nanosized magnetic units. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalStructural Chemistry
DOIs
Publication statusAccepted/In press - Dec 29 2016

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Keywords

  • Extraordinary hyperfine field
  • Magnetic properties
  • Molecular magnet
  • Mössbauer spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Kuzmann, E., Zoppellaro, G., Pechousek, J., Klencsár, Z., Machala, L., Tucek, J., Homonnay, Z., Cuda, J., Szalay, R., & Pápai, M. (Accepted/In press). Magnetic coupling and relaxation in Fe[N(SiPh2Me)2]2 molecular magnet. Structural Chemistry, 1-9. https://doi.org/10.1007/s11224-016-0899-2