By Topic

Magnetic properties, structure and shape-memory transitions in Ni-Mn-Ga thin films grown by ion-beam sputtering

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Ahn, Jae-Pyoung ; Ceramic Process. Res. Center, Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea ; Cheng, Ning ; Lograsso, T. ; Krishnan, Kannan M.

Ni1-2xMnxGax (x~0.2 and 0.25) alloys in thin film form were prepared by ion-beam sputtering from alloy targets. For Si(001) substrates the structure/texture of the films are a function of the growth temperature (Tg). The tetragonal martensite structure with a (220) texture was obtained for an optimal T g~300-350°C. At higher temperatures a cubic silicide (Mn 12Ni4Si3) was obtained. At room temperature, optimal films with the stoichiometric composition (x ~ 0.2) showed a ferromagnetic hysteresis behavior characterized by significant in-plane rotation. The coercivity of the films was 310 Oe and temperature-dependent measurements confirmed a Curie temperature, Tc~340 K. At room temperature the films show a modulated 7M martensite structure which was observed in in situ heating experiments to transforms to the cubic austenite phase at 500°C

Published in:

Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 4 )