Browse Prior Art Database

Fabrication of EuO Films

IP.com Disclosure Number: IPCOM000092072D
Original Publication Date: 1968-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Ahn, KY: AUTHOR [+2]

Abstract

This technique for fabrication of EuO films is easily controllable and reproducible. Eu metal is first evaporated in a vacuum onto a room temperature substrate such as glass. The Eu metal film is then annealed in the same vacuum in the range 150 degrees C to 200 degrees C for approximately 1 hour. During annealing, the progress of the change of the Eu metal to EuO can be monitored by watching the color change in a beam of light reflected from the sample. For incident white light, the reflected light changes from white to reddish as the composition of the film changes. The resulting layer of EuO is about 1000 angstroms thick. A second layer of Eu metal is deposited on the previous film and annealed in the same manner.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Fabrication of EuO Films

This technique for fabrication of EuO films is easily controllable and reproducible. Eu metal is first evaporated in a vacuum onto a room temperature substrate such as glass. The Eu metal film is then annealed in the same vacuum in the range 150 degrees C to 200 degrees C for approximately 1 hour. During annealing, the progress of the change of the Eu metal to EuO can be monitored by watching the color change in a beam of light reflected from the sample. For incident white light, the reflected light changes from white to reddish as the composition of the film changes. The resulting layer of EuO is about 1000 angstroms thick. A second layer of Eu metal is deposited on the previous film and annealed in the same manner. By repeating this cycle of evaporation and annealing, a thick film is built up with associated large Kerr effects. The characteristic optical absorption of the films is increased because such films have a reduced number of pinholes or large grain sizes resulting in a higher density. The grain size of oxidized film is typically 2000 angstroms.

1