Premartensitic transition driven by magnetoelastic interaction in bcc ferromagnetic Ni2MnGa

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Título:	Premartensitic transition driven by magnetoelastic interaction in bcc ferromagnetic Ni2MnGa
Autor/a:	Planes Vila, Antoni; Obradó Llauradó, Eduard; Gonzàlez Comas, Alfons; Mañosa, Lluís
Otros autores:	Universitat de Barcelona
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.
Materia(s):	-Equacions d'estat -Ciència dels materials -Regla de les fases i equilibri -Equations of state -Materials science -Phase rule and equilibrium
Derechos:	(c) American Physical Society, 1997
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	American Physical Society
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Gonzàlez Comas, Alfons; Obradó Llauradó, Eduard; Mañosa, Lluís; Planes Vila, Antoni; Chernenko, V. A.; Hattink, Bart Jan; Labarta, Amílcar

Mañosa, Lluís; Gonzàlez Comas, Alfons; Obradó Llauradó, Eduard; Planes Vila, Antoni; Chernenko, V. A.; Kokorin, V. V.; Cesari, Eduard

Obradó Llauradó, Eduard; Gonzàlez Comas, Alfons; Mañosa, Lluís; Planes Vila, Antoni

Gonzàlez Comas, Alfons; Obradó Llauradó, Eduard; Mañosa, Lluís; Planes Vila, Antoni; Chernenko, V. A.; Hattink, Bart Jan; Labarta, Amílcar

Obradó Llauradó, Eduard; Mañosa, Lluís; Planes Vila, Antoni

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