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.

PUBLICATIONS

Mossbauer Study of NaCl-Coated Fe Nanoparticles

Published

Author(s)

Alexander J. Shapiro, Robert D. Shull, N Gorshkov, Michael R. Zachariah

Abstract

The potential use of magnetic nanoparticles as a very efficient refrigerant for magnetic refrigerators at temperatures well above 4.2 K was recently suggested [1,2]. Suitable for this purpose NaCl-coated iron nanoparticles were synthesized in a sodium flame co-flow (Cl2 in Ar) reactor. This process allows the production of sufficient quantities of unoxidized, high-purity iron nanoparticles enveloped in sodium halides. The composite powder was investigated by means of Mossbauer spectroscopy, magnetization measurements, transmission electron microscopy, and scanning electron microscopy show that the material is composed of 30-60 nm (on average) unoxidized Fe particles embedded in NaCl.
Citation
Hyperfine Interactions
Pub Type
Journals

Keywords

magnetic nanoparticles, magnetic refrigeration, magnetization, Mossbauer, refrigerant, scanning electron microscopy

Citation

Shapiro, A. , Shull, R. , Gorshkov, N. and Zachariah, M. (1998), Mossbauer Study of NaCl-Coated Fe Nanoparticles, Hyperfine Interactions (Accessed May 11, 2025)

Issues

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

Created January 15, 1998, Updated February 17, 2017