Hysteresis effects in the magnetic-field-induced reverse martensitic transition in magnetic shape-memory alloys


Krenke T., AKSOY S., Duman E., ACET M., Moya X., MANOSA L., ...More

JOURNAL OF APPLIED PHYSICS, vol.108, no.4, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 108 Issue: 4
  • Publication Date: 2010
  • Doi Number: 10.1063/1.3466770
  • Journal Name: JOURNAL OF APPLIED PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Istanbul Technical University Affiliated: No

Abstract

We study the mechanism of magnetic-field-induced reverse martensitic transformations by considering the field-induced temperature-shifts in the thermal hysteresis loop of the magnetization and critical fields determined from magnetization isotherms. We consider first the temperature-shifts in a symmetric thermal hysteresis loop and extend the discussion to the case of the Heusler-based Ni(50)Mn(34)In(16) magnetically superelastic alloy having a nonsymmetric thermal hysteresis loop. We obtain two different temperature-behaviors for the critical field depending on whether the initial measurement temperature lies on the forward or on the reverse transformation path of the thermal hysteresis. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3466770]