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    High-field magneto-thermo-mechanical testing system for characterizing multiferroic bulk alloys

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    15_RSI_86_113902.pdf (5.558Mb)
    Date
    2015
    Author
    Bruno, Nickolaus M.
    Karaman, Ibrahim
    Ross, Joseph H. Jr.
    Chumlyakov, Yuriy I.
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    Abstract
    Multiferroic meta-magnetic shape memoryalloys are well known for exhibiting large magnetic field induced actuation strains, giant magnetocaloric effects, magneto-resistance, and structural and magnetic glassy behaviors. Thus, they are candidates for improving modern day sensing, actuation, magneto-resistance, and solid-state refrigeration processes. Until now, however, experimental apparatuses have typically been able to probe a limited ferroic parameter space in these materials, i.e., only concurrent thermal and mechanical responses, or magnetic and thermal responses. To overcome this barrier and better understand the coupling of multiple fields on materials behavior, a magneto-thermo-mechanical characterization device has been designed and implemented. This device is capable of compressing a specimen at load levels up to 5300 N collinearly with applied fields up to 9 T between temperatures of −100 °C and 120 °C. Uniaxial stress, strain, temperature, magnetic field, and the volumetric average magnetization have been simultaneously measured under mixed loading conditions on a NiCoMnIn meta-magnetic shape memoryalloy and a few selected results are presented here.
    DOI
    10.1063/1.4934571
    Department
    Physics and Astronomy
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    Citation
    Rev. Sci. Instrum. 86, 113902 (2015)

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