Browsing Det matematisk-naturvitenskapelige fakultet by Author "Valldor, Björn Martin"

Now showing items 1-7 of 7

  • Chiral Spin Liquid Ground State in YBaCo3FeO7 
    Schweika, W.; Valldor, Björn Martin; Reim, J.D.; Rößler, U.K. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    A chiral spin liquid state is discovered in the highly frustrated, noncentrosymmetric swedenborgite compound YBaCo3FeO7, a layered kagome system of hexagonal symmetry, by advanced polarized neutron scattering from a single ...
  • Click functionalized biocompatible gadolinium oxide core-shell nanocarriers for imaging of breast cancer cells 
    Siribbal, Shifaa M.; Ilyas, Shaista; Renner, Alexander M.; Iqbal, Sumiya; Muñoz Vázquez, Sergio; Moawia, Abubakar; Valldor, Björn Martin; Hussain, Muhammad S.; Schomäcker, Klaus; Mathur, Sanjay (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Site-specific delivery using functionalized nanocarriers is in high demand in imaging applications of modern clinical research. To improve the imaging capabilities of conventionally used contrast agents and expand the ...
  • Impact of inversion symmetry on a quasi-1D S = 1 system 
    Kim, J.K.; Ranjith, K.M.; Burkhardt, U.; Prots, Yu; Baenitz, M.; Valldor, Björn Martin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Here, we report the synthesis and magnetic properties of a novel, centrosymmetric, quasi-1D spin chain system La3VWS3O6, with hexagonal crystal structure (P63/m, a  =  9.460 76(3), c  =  5.518 09(2) Å). Pure powders were ...
  • Non-collinear magnetic structures in the magnetoelectric Swedenborgite CaBaFe4O7 derived by powder and single-crystal neutron diffraction 
    Qureshi, Navid; Ouladdiaf, Bachir; Senyshyn, Anatoliy; Caignaert, Vincent; Valldor, Björn Martin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We have investigated the magnetic structures of the Swedenborgite compound CaBaFe4O7 using magnetic susceptibility and neutron diffraction experiments on powder and single-crystal samples. Below TN1 = 274 K the system ...
  • Order-to-Disorder Transition and Hydrogen Bonding in the Jahn-Teller Active NH4CrF3 Fluoroperovskite 
    Fjellvåg, Øystein Slagtern; Gonano, Bruno; Bernal, Fabian Leonardo Martinez; Amedi, Salah Bra; Lyu, Jike; Pomjakushin, Vladimir; Medarde, Marisa; Chernyshov, Dmitry; Marshall, Kenneth; Valldor, Björn Martin; Fjellvåg, Helmer; Hauback, Bjørn Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Large quantities of high-purity NH4CrF3 have been synthesized using a wet-chemical method, and its structural chemistry and magnetic properties are investigated in detail for the first time. NH4CrF3 is a tetragonal ...
  • Pressure-induced collapse of large-moment magnetic order and localized-to-itinerant electronic transition in the host-guest compound [C s6Cl] [F e24 S e26] 
    Adler, Peter; Medvedev, Sergey A.; Valldor, Björn Martin; Naumov, Pavel G.; Elghazali, Moaz A.; Rüffer, Rudolf (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The magnetic properties of iron chalcogenides and pnictides have found much interest as magnetic fluctuations are suggested to drive the formation of Cooper pairs in iron-based superconductors. Here, we have studied the ...
  • Synthesis and Properties of Ba6Fe2Te3S7, with an Fe Dimer in a Magnetic Singlet State. 
    Frøen, Emil Herman; Adler, Peter; Valldor, Björn Martin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    A new quaternary sulfide telluride, Ba6Fe2Te3S7, was synthesized by a solid-state reaction, and its crystal structure is novel. X-ray diffraction data on powder and single crystals reveal an orthorhombic lattice with a = ...