header

Size Effects in Hysteresis of Electrochemically Deposited Ni-Mn-Sn Heusler Alloy Films

22 Pages Posted: 27 Mar 2019 First Look: Preprint

See all articles by Yijia Zhang

Yijia Zhang

Texas A&M University - Department of Materials Science and Engineering

Julia Billman

Texas A&M University - Department of Mechanical Engineering

Patrick J. Shamberger

Texas A&M University - Department of Materials Science and Engineering

Abstract

Understanding the effect of small characteristic length scales on phase transformations requires microscopic observations to identify mechanisms which may influence the progression of the transformation. Here, we report thickness-dependent hysteresis in electrochemically deposited Ni-Mn-Sn Heusler alloy films, as observed by optical microscopy. This approach allows for analyzing size dependent phase transformation behavior within individual grains from films with decreasing thickness. Hysteresis is not correlated with grain size, but increases with decreasing film thickness following a power law relationship. This behavior is attributable to internal friction-induced energy dissipation at the film-substrate interface in microscale alloy films.

Keywords: Size effects, Martensitic transformation, Thermal hysteresis, Magnetocaloric effect, Heusler Alloy.

Suggested Citation

Zhang, Yijia and Billman, Julia and Shamberger, Patrick J., Size Effects in Hysteresis of Electrochemically Deposited Ni-Mn-Sn Heusler Alloy Films. A-19-279. Available at SSRN: https://ssrn.com/abstract=3358852

Yijia Zhang

Texas A&M University - Department of Materials Science and Engineering

Langford Building A
798 Ross St.
College Station, TX 77843-3137
United States

Julia Billman

Texas A&M University - Department of Mechanical Engineering

Langford Building A
798 Ross St.
College Station, TX 77843-3137
United States

Patrick J. Shamberger (Contact Author)

Texas A&M University - Department of Materials Science and Engineering ( email )

Langford Building A
798 Ross St.
College Station, TX 77843-3137
United States

Register to save articles to
your library

Register

Paper statistics

Abstract Views
57
Downloads
11