ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Polycrystalline films of Y3−xBixFe5−yAlyO12 (x=0.5–2.0, y=0–1.2) were prepared on glass substrates by pyrolysis combined with spin-coating techniques. SEM and TEM studies revealed that the grain size increases with x but decreases with y. This means that enhancing the magneto-optical effect by increasing x results in large grain size, which causes a strong media noise due to light scattering at grain boundaries. To solve this problem we have made double-layer films. An underlayer of polycrystalline film low in x, hence small in grain size, was first made by a conventional pyrolysis process. On this an upper layer high in x was made. The upper layer was crystallized at a temperature ∼50 °C lower and was ten times smaller in grain size than the single-layer film with an equal x. Furthermore, the upper layer crystallized at the lower temperature (590 °C) was exceedingly homogeneous.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.349974
