Crystallization and high temperature shape memory behavior of sputter-deposited NiMnCoIn thin films Academic Article

abstract

• Amorphous Ni50Mn38Co6In6 films of 20m in thickness are fabricated using dc magnetron sputtering technique. Ex situ annealing studies demonstrate the crystallization at elevated temperature, and the retention of L10 martensite at room temperature. In situ annealing inside a transmission electron microscope reveals the crystallization process as well as the transformation to B2 austenite at elevated temperatures. Differential scanning calorimetry studies show the crystallization activation energy of 239kJ/mol, a reversible martensitic phase transformation temperature of 350C, and a hysteresis of 75C.

authors

• Karaman, Ibrahim

published proceedings

• APPLIED PHYSICS LETTERS

author list (cited authors)

• Rios, S., Karaman, I., & Zhang, X.

citation count

• 17

publication date

• April 2010

publisher

• AIP Publishing  Publisher

keywords

• Amorphous State
• Annealing
• Cobalt Alloys
• Crystallisation
• Differential Scanning Calorimetry
• Hysteresis
• Indium Alloys
• Manganese Alloys
• Metallic Thin Films
• Nickel Alloys
• Reverse Martensitic Transformations
• Shape Memory Effects
• Transmission Electron Microscopy

Digital Object Identifier (DOI)

• 10.1063/1.3407670

start page

• 173102

volume

• 96

issue

• 17

URL

• http://dx.doi.org/10.1063/1.3407670