Accession Number:

AD0253290

Title:

SUPERPARAMAGNETISM IN AU-NI ALLOYS

Descriptive Note:

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS INST OF TECH

Report Date:

1961-02-25

Pagination or Media Count:

1.0

Abstract:

A magnetic investigation of the aging process at low temperatures in the Au-Ni system has been made. It was found that when alloys of 20 to 40 at- Ni in Au were aged at temperatures between 100 and 200 C an increase in the paramagnetic susceptibility was observed. Supersaturated solid solutions were formed by homogenizing the alloy in the single phase region and quenching rapidly to room temperature. The magnetization curve was then measured at various temperatures. After aging the sample for predetermined time intervals, the magnetization curve was remeasured. The changes which occurred indicated that very small superparamagnetic clusters rich in Ni atoms were being formed as a result of the aging. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE