Magnetic properties of the ThCo/sub 5-x/Ni/sub x/ system

Journal Article · Sat Nov 01 04:00:00 EST 1975 · J. Appl. Phys., v. 46, no. 11, pp. 4961-4964

OSTI ID:4123757

Narasimhan, K S.V.L.; Do-Dinh, C; Wallace, W E; Hutchens, R D

Magnetic moments, Curie temperatures, and anisotropy fields are presented for ThCo/sub 5-x/Ni/subx/ ternaries for temperatures ranging from 4.2 to 300 K. ThNi$sub 5$ is a Pauli paramagnet. The Co moment in ThCo$sub 5$ is 1.16 $mu$/subB/ per atom. The reduction below 1.7 $mu$/subB/ for elemental cobalt is ascribed to electron transfer from Th to Co together with shifts in the relative positions of the cobalt 3d subbands. The variation of anisotropy field with composition supports the notion that the magnetic anisotropy of ThCo$sub 5$ originates largely with Co in the 2(c) sites. The coercive force, measured at 4.2 K, increases with nickel content attaining a value of 20 kOe for ThCo$sub 3$$.$$sub 5$Ni$sub 1$$.$$sub 5$. This alloy has at 4.2 K an energy product of 2.6 MG Oe. (AIP)

• Research Organization: Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260
• NSA Number: NSA-33-009866
• OSTI ID: 4123757
• Journal Information: J. Appl. Phys., v. 46, no. 11, pp. 4961-4964, Journal Name: J. Appl. Phys., v. 46, no. 11, pp. 4961-4964; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

*COBALT BASE ALLOYS-- MAGNETIC MOMENTS
*NICKEL BASE ALLOYS-- MAGNETIC MOMENTS
*THORIUM BASE ALLOYS-- MAGNETIC MOMENTS
360104* --Materials--Metals & Alloys--Physical Properties
ANISOTROPY
CHEMICAL PREPARATION
COBALT ALLOYS
ELECTRON TRANSFER
HYSTERESIS
MAGNETIC SUSCEPTIBILITY
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
NICKEL ALLOYS
PERMANENT MAGNETS
TEMPERATURE DEPENDENCE