Gruner, Markus Ernst; Entel, Peter:
Monte Carlo simulations of magnetovolume instabilities in anti-Invar systems
1998
In: Computational Materials Science, Jg. 10 (1998), Heft 1-4, S. 230 - 234
Artikel/Aufsatz in Zeitschrift / Fach: Physik
Titel:
Monte Carlo simulations of magnetovolume instabilities in anti-Invar systems
Autor(in):
Gruner, Markus Ernst im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Entel, Peter im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen
Erscheinungsjahr:
1998
Erschienen in:
Computational Materials Science, Jg. 10 (1998), Heft 1-4, S. 230 - 234
Link URL:
Link URL:

Abstract:

We perform constant pressure Monte Carlo simulations of a spin-analogous model which describes coupled spatial and magnetic degrees of freedom on an fcc lattice. Our calculations qualitatively reproduce magnetovolume effects observed in some rare earth manganese compounds, especially in the anti-Invar material YMn2. These are a sudden collapse of the magnetic moment which is connected with a huge volume change, and a largely enhanced thermal expansion coefficient.