Magneto-Raman Spectroscopy on multiferroic metal-organic framework [(CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub>]Co(HCOO)<sub>3</sub>

ORAL

Abstract

Metal-organic frameworks (MOFs) are a class of nanoporous compounds where organic groups are used in combination with transition metal ions to obtain multifunctional materials. The family of MOFs perovskites ABX3 comprised of methylammonum (A= (CH3)2NH2) and metal (B=Co, Cu, Fe, Mn, Ni) cations with a formate (X=HCOO3) anion are studied because of their multiferroic properties [1]. Therefore, several efforts have been made to understand the nature and strength of exchange interactions in these materials including magnetization at high magnetic fields up to 60 T and infrared spectroscopy at magnetic fields up to 35 T [2,3]. Concurrently, we performed magneto-Raman spectroscopy on [(CH3)2NH2]Co(HCOO)3 at magnetic fields up to 31T to probe the magneto-elastic coupling, the results of our investigations and its implications will be discussed.

*Work at NHMFL was supported by NSF DMR-1157490, DMR-1644779 and the state of Florida. The project is also funded by DoN HBCU/MI program.

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Presenters

  • Rachael Richardson

    • Florida A&M University

Authors

  • Rachael Richardson

    • Florida A&M University

  • Damilola Ologunagba

    • Florida A&M University

  • Zhengguang Lu

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Lab
    • Condensed Matter Science, National High Magnetic Field Laboratory

  • Nan Huang

    • University of Tennessee-Knoxville

  • Dmitry Smirnov

    • National High Magnetic Field Laboratory
    • Natl High Magnetic Field Lab
    • National High Magnetic Field Lab
    • Condensed Matter Science, National High Magnetic Field Laboratory

  • David George Mandrus

    • Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
    • University of Tennessee-Knoxville
    • Oak Ridge National Lab
    • Department of Materials Science and Engineering, University of Tennessee
    • University of Tennessee (Knoxville, USA)
    • Department of Materials Science and Engineering, University of Tennessee Knoxville
    • Department of Material Science & Engineering, University of Tennessee
    • Material Science and Engineering, University of Tennessee
    • Materials Science and Technology, Materials Science and Technology
    • University of Tennessee, Knoxville
    • Department of Materials Science and Engineering, The University of Tennessee
    • Materials Science and Engineering, The University of Tennessee
    • Oak Ridge National Laboratory
    • Department of Material Science and Engineering, University of Tennessee

  • Komalavalli Thirunavukkuarasu

    • Florida A&M University
    • Physics, Florida A&M University