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

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High-field magneto-thermo-mechanical testing system for characterizing multiferroic bulk alloys	7 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1063/1.4934571

Title: High-field magneto-thermo-mechanical testing system for characterizing multiferroic bulk alloys
Creator: Bruno, Nickolaus M.
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Ross, Joseph H. (Jr.)
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Chumlyakov, Yuri I.
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Karaman, Ibrahim
Date: 2015
DOI: 10.1063/1.4934571
Description: Multiferroic meta-magnetic shape memory alloys 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 memory alloy and a few selected results are presented here.