Title:
|
Premartensitic and martensitic phase transition in ferromagnetic Ni2MnGa
|
Author:
|
Gonzàlez Comas, Alfons; Obradó Llauradó, Eduard; Mañosa, Lluís; Planes Vila, Antoni; Chernenko, V. A.; Hattink, Bart Jan; Labarta, Amílcar
|
Other authors:
|
Universitat de Barcelona |
Abstract:
|
We present an experimental study of the premartensitic and martensitic phase transitions in a Ni2MnGa single crystal by using ultrasonic techniques. The effect of applied magnetic field and uniaxial compressive stress has been investigated. It has been found that they substantially modify the elastic and magnetic behavior of the alloy. These experimental findings are a consequence of magnetoelastic effects. The measured magnetic and vibrational behavior agrees with the predictions of a recently proposed Landau-type model [A. Planes et al., Phys. Rev. Lett. 79, 3926 (1997)] that incorporates a magnetoelastic coupling as a key ingredient. |
Subject(s):
|
-Transformacions martensítiques -Materials ferromagnètics -Martensitic transformations -Ferromagnetic materials |
Rights:
|
(c) The American Physical Society, 1999
|
Document type:
|
Article Article - Published version |
Published by:
|
The American Physical Society
|
Share:
|
|