Temperature dependence of the magnetic parameters in the Sm2−xGdxCo17−yMny compounds
- 1 March 1979
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 50 (B3) , 2349-2351
- https://doi.org/10.1063/1.326998
Abstract
The series of compounds Sm2−xGdxCo17−yMny was studied with regard to its suitability for employment as permanent magnet material in microwave/millimeter‐wave traveling‐wave tubes (TWT′s). The pertinent properties investigated are saturation magnetization, 4πMs, temperature coefficient of 4πMs, α, and anisotropy field, HA. The composition ranges investigated were from x =0 to 0.6 and y =0 to 2. Values of 4πMs at 25 C ranged from 12.8 kG for x = 0, y = 1 to 9.4 kG for x = 0.6, y = 2. For the compounds studied, maximum HA occurs at y = 1 for x = 0. The compounds, whose formulas contain a single atom of manganese, were found to yield excellent temperature compensation via Gd substitution in the range +20 to +150 C with the best coefficient occurring in Sm1.6Gd0.4Co16Mn for which α = −0.008%/C (4πMs=10.5 kG).This publication has 7 references indexed in Scilit:
- Variable temperature multimode magnetometerReview of Scientific Instruments, 1978
- Rare earth–cobalt magnets with low reversible temperature coefficientJournal of Applied Physics, 1978
- Temperature compensated magnetic materials of the type Smx R1−xCo5 (R=Tb,Dy,Er)Journal of Applied Physics, 1978
- Interpretation of the magnetic properties of pseudobinarycompounds. I. Magnetocrystalline anisotropyPhysical Review B, 1977
- Low temperature coefficient cobalt-rare earth magnetsIEEE Transactions on Magnetics, 1976
- Magnetic Properties of the Intermetallic Phases Sm[sub 2](Co, Fe)[sub 17]Published by AIP Publishing ,1973
- The hard-magnetic properties of rare earth-transition metal alloysIEEE Transactions on Magnetics, 1972