Evolution of phases in (Ba,Sr)Al4

ORAL

Abstract

Recent results have shown an emergence of CDW order in SrAl4 at 243K, together with a hysteretic structural transition at 87K from a tetragonal to potentially monoclinic structure. The tetragonal structure of BaAl4 with lattice parameters very close to SrAl4 invites a chemical substitution study to track the reported transitions. We have performed electrical resistivity and magnetic susceptibility measurements, along with x-ray and neutron scattering on the Ba1-xSrxAl4 family. All samples have been grown in self-flux and produce large single-crystals, seemingly limited by crucible size.

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Presenters

  • Danila Sokratov

    • Quantum Materials Center, University of Maryland, College Park

Authors

  • Danila Sokratov

    • Quantum Materials Center, University of Maryland, College Park

  • Prathum Saraf

    • Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Quantum Materials Center, University of Maryland, College Park
    • University of Maryland, College Park

  • Chris Eckberg

    • Quantum Materials Center, University of Maryland, College Park
    • University of Maryland, College Park

  • Daniel J Campbell

    • Quantum Materials Center, University of Maryland, College Park
    • University of Maryland, College Park

  • Jeffrey W Lynn

    • Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • Quantum Materials Center, University of Maryland, College Park
    • NIST Center for Neutron Research
    • National Institute of Standards and Technology

  • Peter Zavalij

    • Chemistry, University of Maryland, College Park

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland
    • Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Quantum Materials Center, University of Maryland, College Park
    • Maryland Quantum Materials Center and Department of Physics, University of Maryland, College Park
    • University of Maryland