Open AccessST RUCTURAL AND MAGNETIC PROPERTIES OF TERNARY NEODYMIUM-IRON-CARBON (OR CARBON-BORON) COMPOUNDS
Author(s) -
邢峰,
何文望
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.169-2
Subject(s) - materials science , coercivity , spin canting , anisotropy , boron , magnetic anisotropy , ternary operation , annealing (glass) , carbon fibers , magnetization , condensed matter physics , saturation (graph theory) , analytical chemistry (journal) , nuclear magnetic resonance , metallurgy , magnetic field , composite material , chemistry , composite number , optics , physics , organic chemistry , chromatography , computer science , programming language , mathematics , quantum mechanics , combinatorics
Crystallographic and magnetic properties of the Nd14Fe78B8-xCx compounds were investigated. The properly annealing treatment was found to be the condition that the compounds of light rare earth-iron-carbon belonging to the P42/mnm type structure could be formed. The magnetic ordering temperatures of the compounds decreased somewhat with increasing the carbon concentration, but the saturation magnetization σs had a gentle maximum, and the residual ma gnetization σr, intrinsic coercivity iHe as well as the anisotropy field Ha at room temperature showed a significant increase. The anisotropy behaviours of the C-containing samples were similar to Nd-Fe-B. The fact that the transition temperatures of spin reorientation gradually descended with increasing the carbon content while the canting angle at 1.5 K had a slight increase suggested that there was complicate coupling between the anisotropies of Nd and Fe sublattices. In addition, the suitably Nd-rich carbide exhibited relatively large anisotropy.