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Magneto-elastic coupling in 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 comprised of methylammonum (A= (CH3)2NH2) and metal (B=Co, Cu, Fe, Mn, Ni) cations with a formate (X=HCOO3) anion are very interesting because of their multiferroic properties [1]. Therefore, several efforts have been made to understand the exchange interactions in these materials including magnetization at magnetic fields up to 60 T and infrared spectroscopy at fields up to 35 T [2,3]. Concurrently, we performed Raman spectroscopy on [(CH3)2NH2]Co(HCOO)3 at magnetic fields up to 31T to probe the magneto-elastic coupling. Also, the effect of hydrostatic pressure on the magnetic-elastic coupling in this system was explored. We will discuss our investigations and its implications.
References:
[1] J. Am. Chem. Soc., 131, 13625 (2009).
[2] J. Mater. Chem. C, 4, 11164 (2016)
[3] Inorg. Chem. 57, 11569 (2018)

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Presenters

  • Komalavalli Thirunavukkuarasu

    National High Magnetic Field Laboratory, Tallahassee, FL, Florida A&M University, Natl High Magnetic Field Lab

Authors

  • Komalavalli Thirunavukkuarasu

    National High Magnetic Field Laboratory, Tallahassee, FL, Florida A&M University, Natl High Magnetic Field Lab

  • Rachael Richardson

    Florida A&M University, Natl High Magnetic Field Lab

  • Zhengguang Lu

    Natl High Magnetic Field Lab, National High Magnetic Field Laboratory

  • Nan Huang

    Department of Materials Science and Engineering, University of Tennessee Knoxville

  • Dmitry Smirnov

    Natl High Magnetic Field Lab, National High Magnetic Field Laboratory, Tallahassee, FL, National High Magnetic Field Lab, National High Magnetic Field Laboratory, national high magnetic field laboratory

  • David Mandrus

    Physics, University of Tennessee, Materials Science and Engineering, The University of Tennessee, Department of Materials Science & Engineering, University of Tennessee, Knoxville, The University of Tennesse, Knoxville, University of Tennessee, Department of Physics and Astronomy, University of Tennessee, Oak Ridge National Laboratory, Department of Materials Science and Engineering, University of Tennessee Knoxville, Department of Materials Science and Engineering, University of Tennessee, University of Tennessee, Knoxville, Material Science and Technology Division, Oak Ridge National Laboratory, Material Science and Technology Division, Oak Ridge National Lab