Rok 2022

• Ln2(SeO3)2(SO4)(H2O)2 (Ln=Sm, Dy, Yb): A Mixed‐Ligand Pathway to New Lanthanide(III) Multifunctional Materials Featuring Nonlinear Optical and Magnetic Anisotropy Properties

  Publikacja

  • E. E. Oyeka
  • M. J. Winiarski (dawniej: M. Winiarski)
  • H. Świątek
  • W. Balliew
  • C. D. McMillen
  • M. Liang
  • M. Sorolla II
  • T. Tran

  - ANGEWANDTE CHEMIE-INTERNATIONAL EDITION - Rok 2022

  Bottom-up assembly of optically nonlinear and magnetically anisotropic lanthanide materials involving precisely placed spin carriers and optimized metal-ligand coordination offers a potential route to developing electronic architectures for coherent radiation generation and spin-based technologies, but the chemical design historically has been extremely hard to achieve. To address this, we developed a worthwhile avenue for creating...

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• Magnetic properties of α-KCoPO4 compound with a chiral polar crystal structure

  Publikacja

  • J. Kondek
  • S. Szczupaczyńska-Zalewska
  • M. J. Winiarski (dawniej: M. Winiarski)

  - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Rok 2022

  We have obtained polycrystalline samples of a metastable α variant of KCoPO4 by low temperature (350–400 °C) solid state metathesis reaction of potassium oxalate and ammonium cobalt orthophosphate. The material crystallizes in a polar chiral structure (sg. P63, no. 173). Measurements of magnetic properties reveal antiferromagnetic interactions and no ordering observed down to T = 1.9 K, well below the Weiss temperature |Θcw| =...

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Rok 2021

• Potential Skyrmion Host Fe(IO3)3: Connecting Stereoactive Lone-Pair Electron Effects to the Dzyaloshinskii-Moriya Interaction

  Publikacja

  • E. E. Oyeka
  • M. J. Winiarski (dawniej: M. Winiarski)
  • A. Błachowski
  • K. M. Taddei
  • A. Scheie
  • T. Tran

  - CHEMISTRY OF MATERIALS - Rok 2021

  Magnetic skyrmions, which are topologically distinct magnetic spin textures, are gaining increased attention for their unique physical properties and potential applications in spintronic devices. Here we present a design strategy for skyrmion host candidates based on combinations of magnetic spin, asymmetric building units having stereoactive lone-pair electrons, and polar lattice symmetry. To demonstrate the viability of the proposed...

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• Study of Integer Spin S = 1 in the Polar Magnet β-Ni(IO3)2

  Publikacja

  • E. E. Oyeka
  • M. J. Winiarski (dawniej: M. Winiarski)
  • T. Tran

  - MOLECULES - Rok 2021

  Polar magnetic materials exhibiting appreciable asymmetric exchange interactions can potentially host new topological states of matter such as vortex-like spin textures; however, realizations have been mostly limited to half-integer spins due to rare numbers of integer spin systems with broken spatial inversion lattice symmetries. Here, we studied the structure and magnetic properties of the S = 1 integer spin polar magnet β-Ni(IO3)2...

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