Low-temperature magnetic studies on various substituted rare earth (R)-- transition metal (T) compounds RT$sub 5$

Journal Article · Sun Feb 01 04:00:00 EST 1976 · J. Less-Common Met., v. 45, no. 1, pp. 111-116

DOI:https://doi.org/10.1016/0022-5088(76)90202-2· OSTI ID:4035489

Oesterreicher, H; McNeely, D

Materials with partial substitution of the Co in SmCo$sub 5$ by the elements Ni, Pt, Cu, Ag, Al, In, Si, and Sn, were prepared and their structures identified. In a similar vein, Sm substitution by Zr in SmCo$sub 5$ was investigated as was Al substitution for Co in CeCo$sub 5$. Furthermore, results on Al substitution for Co in RCo$sub 5$ compounds, with R = Y, Gd, and Tb, are included. Stacking faults in the basal plane were observed in as-melted homogeneous compounds with Al and Si substitution for Co in SmCo$sub 5$. The magnetic properties of these materials, such as saturation moments and coercive forces, were investigated at 4.2$sup 0$K. Al and Si substitution for Co in SmCo$sub 5$ results in outstanding coercive forces of the order of 30 to 50 kOe in powder and bulk materials. All other systems were disappointing in terms of magnetic hardness. The origin of outstanding magnetic hardness is discussed in terms of a model of the pinning of extremely energetic domain walls on obstacles of atomic dimension.

• Research Organization: Univ. of California, San Diego
• NSA Number: NSA-33-030230
• OSTI ID: 4035489
• Journal Information: J. Less-Common Met., v. 45, no. 1, pp. 111-116, Journal Name: J. Less-Common Met., v. 45, no. 1, pp. 111-116; ISSN JCOMA
• Country of Publication: China
• Language: English

Related Subjects

*ALUMINIUM ALLOYS-- MAGNETIC PROPERTIES
*COBALT ALLOYS-- MAGNETIC PROPERTIES
*SAMARIUM ALLOYS-- MAGNETIC PROPERTIES
*TRANSITION ELEMENT ALLOYS-- MAGNETIC PROPERTIES
360104* --Materials--Metals & Alloys--Physical Properties
COERCIVE FORCE
DOMAIN STRUCTURE
MAGNETIC FLUX
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
STACKING FAULTS
TERNARY ALLOY SYSTEMS
ULTRALOW TEMPERATURE