Evidence of Martensitic Phase Transitions in Boron Substituted Ni-Mn-In Thin Films

POSTER

Abstract

Ni-Mn-In-B thin films were synthesized on Si substrates using ultra-high vacuum magnetron sputtering. Metamagnetic transitions with thermal hysteresis have been observed on 30 nm thin films using the magnetization measurements. The temperature dependences of the magnetization curves were found to be similar to those of the bulk counterpart. Electronic and magnetic properties of Ni-Mn-In-B thin films were studied using X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD). From the XAS and XMCD spectra, we have observed that Ni plays a dominant role in the overall magnetism. Element-specific XMCD hysteresis loops of Ni in the NiMnInB films were measured as a function of temperature and observed minimum magnetic hysteresis at martensitic transformation. Possible mechanisms responsible for the changes in electronic and magnetic properties of thin films through the effect of redistribution of d electrons are discussed.

*This work was supported by the Office of Basic Energy Sciences, Material Science Division of the U.S. Department of Energy, DOE Grant No. DE-FG02-06ER46291 (SIU) and DE-FG02-13ER46946 (LSU).

Presenters

  • Sudip Pandey

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA
    • Department of Physics, Southern Illinois University Carbondale, IL 62901, USA

Authors

  • Sudip Pandey

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA
    • Department of Physics, Southern Illinois University Carbondale, IL 62901, USA

  • Alpha N'Diaye

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source
    • Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Igor Dubenko

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA
    • Department of Physics, Southern Illinois University Carbondale, IL 62901, USA

  • Anil Aryal

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA
    • Department of Physics, Southern Illinois University Carbondale, IL 62901, USA

  • Dipanjan Mazumdar

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA

  • Sujoy Roy

    • Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • ALS, Lawrence Berkeley National Laboratory

  • Shane Stadler

    • Department of Physics & Astronomy, Louisiana State University, LA 70803 USA

  • NAUSHAD ALI

    • Department of Physics, Southern Illinois University Carbondale, IL 62901 USA
    • Department of Physics, Southern Illinois University Carbondale, IL 62901, USA