Abstract (EN):
The phase diagram of Gd1-xYxMnO3, 0 <= x <= 0.4, is presented and the role of the driving mechanisms in stabilizing both magnetic and ferroelectric orderings is discussed in the framework of the Dzyaloshinskii-Moriya model. The (x, T) phase diagram reflects the effect of lattice distortions induced by the substitution of Gd3+ ion by smaller Y3+ ions, which gradually unbalances the antiferromagnetic against the ferromagnetic exchange interactions, enabling the emergence of ferroelectricity for higher concentrations of yttrium.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
7