INVESTIGADORES
BERCOFF Paula Gabriela
congresos y reuniones científicas
Título:
Mechanosynthesis and characterization of Bi1-xLaxFeO3 with 0.05 ≤ x ≤ 0.6
Autor/es:
A. CRISTÓBAL; S. CONCONI; C. P. RAMOS; P. G. BERCOFF; P. M. BOTTA
Lugar:
Torino
Reunión:
Simposio; 20th International Symposium on Metastable, Amorphous and Nanostructured Materials; ISMANAM 2013; 2013
Resumen:
Multiferroic
materials possess the properties of ferroelectricity, ferromagnetism and even
ferroelastic simultaneously due to the coupling between ferroelectric and
magnetic orders within one phase. Multiferroic materials have attracted much
attention in recent years, because of their potential for new device applications
Besides the obvious practical interest, these materials have attracted strong
academic interest since the coexistence of ferroelectricity and ferromagnetism
in one phase occurs in very few cases, such as BiFeO3.
A synthesis
method which is presented as appropriate for these materials is the use of
mechanochemical activation of precursors in high-energy mills. This treatment
generates solids with a high energy content. Thus, the reactivity of such
systems can be significantly modified, allowing on the one hand facilitate the
preparation conditions, and secondly synthesizing metastable materials or
phases non-obtainable by conventional methods. In this work a method based on
the McCormicks synthesis is used for preparing Bi1-xLaxFeO3 with 0.05 ≤ x ≤
0.6. Relationship between composition, crystalline structure and magnetic
behavior of Bi1-xLaxFeO3 materials is discussed.