Magnetostrictive properties of Tb.3Dy.7(Fe1-xCox)1.9and Tb.3Dy.7(Fe1-xNix)1.9

Author

Clark, A.E. ; Teter, J.P. ; McMasters, O.D.

Author_Institution

Naval Surface Weapons Center, Silver Spring, MD

Volume

23

Issue

5

fYear

1987

fDate

9/1/1987 12:00:00 AM

Firstpage

3526

Lastpage

3528

Abstract

Measurements of Curie temperature, magnetic moment and magnetostriction were made on Tb.3Dy.7(Fe1-xTx)1.9where T = Co and Ni ( $0 \\leq x \\leq 1$ for Co and $0 \\leq x \\leq .08$ for Ni). Alloys were prepared using a float zone technique, from which it was possible to grow oriented [112] crystallite samples for $0 \\leq x \\leq .21$ (T = Co). The Curie temperature peaked near x = .25 (T = Co) and decreased with increasing x (T = Ni). For both alloy systems the room temperature magnetic moment decreased with increasing x. An increase in the rare earth contribution of the magnetostriction of 12% is predicted for the Co substituted alloys with values of x near .25. This increase was not confirmed by the magnetostriction measurements. A decrease in magnetostriction with increasing x was observed for all x. This may be due to a defected platelet structure in the oriented alloys ( $x \\neq 0$ ), or a negative contribution to the magnetostriction from the Fe1-xCoxsublattice.

Keywords

Magnetostriction; Anisotropic magnetoresistance; Cobalt alloys; Crystallization; Iron; Magnetic anisotropy; Magnetic moments; Magnetic properties; Magnetostriction; Perpendicular magnetic anisotropy; Temperature measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1987.1065761

Filename

1065761