Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Structural Effects on the Magnetic Character of Yttrium-Iron-Garnet Nanoparticles Dispersed in Glass Composites

Published

Author(s)

S Taketomi, Alexander J. Shapiro, Robert D. Shull

Abstract

We obtained dispersed-nanocrystal/glass composites by impregnating amorphous yttrium iron garnet (YIG) nanoparticles (made by an alkoxide method) into the 49 nanometer diameter pores in the sponge-like structure of porous silica glass (controlled pore glass or CPG) followed by heat treatment of 1000 C and 0.1 hours. Investigation by field emission scanning electron microscopy (FE-SEM) reveals that the CPG fused together 2 m in depth from the surface while its inner core preserved the sponge-like network structure. The particles were independently dispersed with sizes ranging from 20 nm to 40 nm in this fused shell with an average particle density approximately 100 mu-2}. At the surface the particle density appeared to be slightly larger than this value. No particles were found in the inner core. Even in the fused shell, no particles were found in those areas in which the sponge-like structure was preserved. It is concluded that the particles acted as a catalyst to the fusion of the sponge-like glass.
Citation
Journal of Applied Physics
Volume
93
Issue
No. 10

Keywords

amorphous, controlled pore galss, morphology, nanoparticles-dispersed glass composites, yttrium-iron-garnet

Citation

Taketomi, S. , Shapiro, A. and Shull, R. (2002), Structural Effects on the Magnetic Character of Yttrium-Iron-Garnet Nanoparticles Dispersed in Glass Composites, Journal of Applied Physics (Accessed June 16, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created November 12, 2002, Updated October 12, 2021