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https://hdl.handle.net/2445/12793
Title: | Premartensitic transition driven by magnetoelastic interaction in bcc ferromagnetic Ni2MnGa |
Author: | Planes Vila, Antoni Obradó Llauradó, Eduard Gonzàlez Comas, Alfons Mañosa, Lluís |
Keywords: | Equacions d'estat Ciència dels materials Regla de les fases i equilibri Equations of state Materials science Phase rule and equilibrium |
Issue Date: | 1997 |
Publisher: | American Physical Society |
Abstract: | We show that the magnetoelastic coupling between the magnetization and the amplitude of a short wavelength phonon enables the existence of a first order premartensitic transition from a bcc to a micromodulated phase in Ni2MnGa. Such a magnetoelastic coupling has been experimentally evidenced by ac susceptibility and ultrasonic measurements under an applied magnetic field. A latent heat around 9 J/mol has been measured using a highly sensitive calorimeter. This value is in very good agreement with the value predicted by a proposed model. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per APS i http://dx.doi.org/10.1103/PhysRevLett.79.3926 |
It is part of: | Physical Review Letters, 1997, vol. 79, núm. 20, p. 3926-3929 |
URI: | https://hdl.handle.net/2445/12793 |
Related resource: | http://dx.doi.org/10.1103/PhysRevLett.79.3926 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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147480.pdf | 132.26 kB | Adobe PDF | View/Open |
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