Magnetic properties of amorphous RE65Al35alloys

Author

Giessen, Bill C. ; Hines, William A. ; Kabacoff, Lawrence T.

Author_Institution

Northeastern University, Boston, MA

Volume

16

Issue

5

fYear

1980

fDate

9/1/1980 12:00:00 AM

Firstpage

1203

Lastpage

1205

Abstract

Ribbons of amorphous RE65Al35alloys (where RE = Ce, Pr and Dy) were prepared by melt spinning under vacuum. Magnetization measurements, carried out on a vibrating sample magnetometer with magnetic fields $H \\leq 20$ kOe and over a temperature range 2.8°K $\\leq T \\leq 300$ °K, are reported here. Dy65Al35and Pr65Al35demonstrated a ferromagnetic-like ordering which was characterized by the appearence of a cusp at 30 °K and 7 °K, respectively. In both cases, hysteresis and relaxation effects occurred below the ordering temperature. Amorphous Ce65Al35exhibited a negative paramagnetic Curie temperature of -40 °K, but did not order for temperatures down to 2.8 °K. The results are discussed in terms of the random atomic arrangement and its influence on the exchange and anisotropy interactions.

Keywords

Amorphous magnetic materials/devices; Aluminum alloys; Amorphous materials; Magnetic field measurement; Magnetic hysteresis; Magnetic properties; Magnetization; Magnetometers; Spinning; Temperature distribution; Vibration measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1980.1060747

Filename

1060747