Spin arrangements in the double perovskite LaSr<sub>1-x</sub>Ca<sub>x</sub>NiReO<sub>6</sub>

ORAL

Abstract

Double perovskite oxides are a class of multifunctional materials exhibiting various magnetic orders and electronic states. Their general composition is A2BB’O6 and can accommodate almost any of A2: alkaline earth or lanthanide cations and BB’O6: transition metals in various oxidation states. Consequently, the structure is flexible to expand, contract and distort with cation exchanges. We use the muon spin rotation, relaxation and resonance (μ+SR) technique to study the magnetic properties of LaSr1-xCaxNiReO6 which are determined by geometry and cation exchange. With its unique length and time scales, the implantation of muons in specific crystallographic sites acts as a local magnetic probe of the static and dynamic spin arrangements. In our study we elucidate the type of ordering of the magnetic ground states for the x=0,1 compounds, resulting from two interacting Ni and Re magnetic sub-lattices. For x=0, a glassy state between 75K>T>23K transforms into an incommensurate long-range order below Tc=23K. For x=1, a commensurate long-range order is achieved from a metastable ferrimagnetic ordering at Tc=103K to a stable one at Txy=50K. A dilute moment state which was identified in both compounds with increasing temperature is eventually dissolved (T>250K) into a paramagnetic state.

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Publication: 1. Intertwined Magnetic Sub-Lattices in the Double Perovskite Compound LaSrNiReO6 - https://doi.org/10.1103/PhysRevB.102.144409
2. Influence of Magnetic Sub-Lattices in the Double Perovskite Compound LaCaNiReO6 - K. Papadopoulos et al. , to be submitted

Presenters

  • Konstantinos Papadopoulos

    • Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden

Authors

  • Konstantinos Papadopoulos

    • Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden

  • Ola K Forslund

    • Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden

  • Elisabetta Nocerino

    • Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden

  • Fredrik Johansson

    • KTH Royal Institute of Technology, Division of Applied Physical Chemistry, Department of Chemistry, 10044 Stockholm, Sweden

  • Gediminas Simutis

    • Laboratoire de Physique des Solides, Paris-Saclay University and CNRS, France
    • Laboratory for Neutron and Muon Instrumentation, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

  • Nami Matsubara

    • Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden

  • Gerald Morris

    • TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada

  • Bassam Hitti

    • TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada

  • Donald Arseneau

    • TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada

  • Jean Christophe Orain

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland

  • Vladimir Pomjakushin

    • Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232, Villigen, PSI, Switzerland

  • Peter Svedlindh

    • Department of Materials Science and Engineering, Uppsala University, Box 35, SE-751 03 Uppsala, Sweden

  • Daniel Andreica

    • Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania

  • Somnath Jana

    • Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India

  • Lars Borjesson

    • Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden

  • Jun Sugiyama

    • Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan

  • Martin Mansson

    • Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden

  • Yasmine Sassa

    • Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
    • Chalmers University of Technology