Magnetic field and in situ stress dependence of elastic behavior in EuTiO3 from resonant ultrasound spectroscopy

Jason Schiemer, Leszek J. Spalek, Siddharth S. Saxena, Christos Panagopoulos, Takuro Katsufuji, Annette Bussmann-Holder, Jürgen Köhler, Michael A. Carpenter

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    Magnetoelectric coupling phenomena in EuTiO3 are of considerable fundamental interest and are also understood to be key to reported multiferroic behavior in strained films, which exhibit distinctly different properties to the bulk. Here, the magnetoelastic coupling of EuTiO3 is investigated by resonant ultrasound spectroscopy with in situ applied magnetic field and stress as a function of temperature ranging from temperatures above the structural transition temperature Ts to below the antiferromagnetic ordering temperature Tn. One single crystal and two polycrystalline samples are investigated and compared to each other. Both paramagnetic and diamagnetic transducer carriers are used, allowing an examination of the effect of both stress and magnetic field on the behavior of the sample. The properties are reported in constant field/variable temperature and in constant temperature/variable field mode where substantial differences between both data sets are observed. In addition, elastic and magnetic poling at high fields and stresses at low temperature has been performed in order to trace the history dependence of the elastic constants. Four different temperature regions are identified, characterized by unusual elastic responses. The low-temperature phase diagram has been explored and found to exhibit rich complexity. The data evidence a considerable relaxation of elastic constants at high temperatures, but with little effect from magnetic field alone above 20 K, in addition to the known low-temperature coupling.

    Original languageEnglish
    Article number054108
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume93
    Issue number5
    DOIs
    Publication statusPublished - 2016 Feb 10

    Fingerprint

    Ultrasonics
    Spectroscopy
    Magnetic fields
    magnetic fields
    spectroscopy
    Temperature
    temperature
    elastic properties
    Elastic constants
    stress distribution
    europium titanium trioxide
    transducers
    examination
    transition temperature
    phase diagrams
    histories
    single crystals
    Superconducting transition temperature
    Phase diagrams
    Transducers

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Magnetic field and in situ stress dependence of elastic behavior in EuTiO3 from resonant ultrasound spectroscopy. / Schiemer, Jason; Spalek, Leszek J.; Saxena, Siddharth S.; Panagopoulos, Christos; Katsufuji, Takuro; Bussmann-Holder, Annette; Köhler, Jürgen; Carpenter, Michael A.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 5, 054108, 10.02.2016.

    Research output: Contribution to journalArticle

    Schiemer, Jason ; Spalek, Leszek J. ; Saxena, Siddharth S. ; Panagopoulos, Christos ; Katsufuji, Takuro ; Bussmann-Holder, Annette ; Köhler, Jürgen ; Carpenter, Michael A. / Magnetic field and in situ stress dependence of elastic behavior in EuTiO3 from resonant ultrasound spectroscopy. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 93, No. 5.
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