Berlin 2008 – wissenschaftliches Programm

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SYNF: Symposium Ferroic materials and novel functionalities

SYNF 3: Ferroic materials and novel functionalities III - Poster (joined by O posters)

SYNF 3.1: Poster

Dienstag, 26. Februar 2008, 18:30–19:30, Poster F

La and Mn co-doping effects on the structure and electrical properties of BiFeO₃ thin films — •Abdelilah Lahmar¹, Giray Kartopu¹, Salah Habouti¹, Claus-Henning Solterbeck¹, Mohammed Es-Souni¹, Brahim Elouadi², and Michel Couzi³ — ¹Institute for Materials and Surface Technology, University of Applied Sciences Kiel, Germany — ²Université de La Rochelle, Department de Chimie, La Rochelle, France — ³Laboratoire de Physico-Chimie Moléculaire, CNRS, Université Bordeaux, Talence, France

The structural, electric, and magnetic properties of the solid solution Bi_1−xLa_xFe_1−xMn_xO₃ (0≤x≤0.1) have been investigated. Thin films have been grown by a sol-gel spin-coating method on (111)Pt/Ti/SiO₂/Si substrates. The incorporation of both (La³⁺, Mn³⁺) cations in bismuth ferrite host lattice was found to improve dielectric, ferroelectric, and magnetic properties. A comparative study of 5%La-, 5%Mn-, and 5%LaMn- doped BiFeO₃ has been undertaken with the aim of understanding the role of each doping element on the structure and electrical properties. Raman spectroscopy has been used for a detailed structural characterization, and the results obtained are compatible with our ferroelectric investigations.