Oxides and surface magnetism. Final report

PDF Version Also Available for Download.

Description

The general objective of this program was to study the magnetism and structure of iron oxide films with a view to enhancing control over growth mode, oxidation state and fundamental understanding in this complex system. In particular, the authors sought to create new magnetic metal/oxide multilayers and composites based on improved knowledge of the magnetic properties at Fe and Fe{sub 3}O{sub 4} surfaces and at Fe/Fe{sub 3}O{sub 4} interfaces. The project had three parts: (1) deposition and characterization of iron films up to 0.1 {micro}m on fused quartz, (2) deposition and characterication of Fe{sub 3}O{sub 4} films up to 0.1 ... continued below

Physical Description

Medium: P; Size: 2 p.

Creation Information

O`Handley, R. C. & Oliveria, M. July 1, 1998.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The general objective of this program was to study the magnetism and structure of iron oxide films with a view to enhancing control over growth mode, oxidation state and fundamental understanding in this complex system. In particular, the authors sought to create new magnetic metal/oxide multilayers and composites based on improved knowledge of the magnetic properties at Fe and Fe{sub 3}O{sub 4} surfaces and at Fe/Fe{sub 3}O{sub 4} interfaces. The project had three parts: (1) deposition and characterization of iron films up to 0.1 {micro}m on fused quartz, (2) deposition and characterication of Fe{sub 3}O{sub 4} films up to 0.1 {micro}m on fused quartz and (3) fabrication and characterization of Fe/Fe{sub 3}O{sub 4}/{hor_ellipsis}multilayers. (1) The structure and magnetic properties of sputtered Fe/SiO{sub 2} were studied first. The most interesting result here is the variation of magnetic properties with Fe film thickness, t. M{sub s} is approximately 1680 gauss and H{sub c} {approx} 25 Oe for t > 0.1 micron. (2) The Fe oxide study (task 2) proved to be very important. By using reactive sputtering, the authors were able to locate a robust processing region, which would give thickness independent properties for the Fe{sub 3}O{sub 4} to be used in the multilayer studies. In addition they synthesized ferromagnetic Fe{sub 1{minus}x}O, the first report of such a phase. The ferromagnetism is attributed to the cation disorder. (3) The purpose of the multilayer study (task 3) was to see if Fe could be used to enhance the moment and possibly the coercivity of magnetic oxides.

Physical Description

Medium: P; Size: 2 p.

Notes

OSTI as DE98003983

Source

  • Other Information: PBD: [1998]

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE98003983
  • Report No.: DOE/ER/45458--T1
  • Grant Number: FG02-91ER45458
  • DOI: 10.2172/661591 | External Link
  • Office of Scientific & Technical Information Report Number: 661591
  • Archival Resource Key: ark:/67531/metadc704268

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • July 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Feb. 20, 2017, 1:47 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 2

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

O`Handley, R. C. & Oliveria, M. Oxides and surface magnetism. Final report, report, July 1, 1998; Cambridge, Massachusetts. (digital.library.unt.edu/ark:/67531/metadc704268/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.