Tatsuo Fujii

Superparamagnetic Behaviour and Induced Ferrimagnetism of LaFeO3 Nanoparticles Prepared by a Hot-Soap Technique

© 2012 Fujii et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Superparamagnetic Behaviour and Induced Ferrimagnetism of LaFeO3 Nanoparticles Prepared by a Hot-Soap Technique

Structure and magnetic properties of Fe2O3-FeTiO3films

Solid solutions between ilmenite (FeTiO3) and hematite (α-Fe2O3) are one of the candidates for high-temperature magnetic semiconductors. Well-crystallized epitaxial xFeTiO3-(1-x)Fe2O3 (0.5<x<1) films were prepared on both α-Al2O3(001) and (110) single-crystalline substrates by reactive sputtering technique. The (110)-oriented films provided more restricted preparation conditions than the (001)-oriented ones. Both films with x<0.7 had large saturation magnetization at room temperature. The magnetic easy plane lay in the (001) crystallographic plane regardless of the film orientations. The magnetic properties of (001)- and (110)-oriented films seemed to be affected not only by the crystalline orientation but also by the lattice strains induced in the films.

Structure and magnetic properties of Fe2O3-FeTiO 3 films

Solid solutions between ilmenite (FeTiO3) and hematite (α-Fe2O3) are one of the candidates for high-temperature magnetic semiconductors. Well-crystallized epitaxial xFeTiO3-(1-x)Fe2O3 (0.5<x<1) films were prepared on both α-Al2O3(001) and (110) single-crystalline substrates by reactive sputtering technique. The (110)-oriented films provided more restricted preparation conditions than the (001)-oriented ones. Both films with x<0.7 had large saturation magnetization at room temperature. The magnetic easy plane lay in the (001) crystallographic plane regardless of the film orientations. The magnetic properties of (001)- and (110)-oriented films seemed to be affected not only by the crystalline orientation but also by the lattice strains induced in the films.