Increase in the magnetostrictive susceptibility of Tb0.3Dy0.67Ho0.03Fe2−x
Co
x
alloys upon substitution of cobalt for iron |
| |
Authors: | I S Tereshina A P Tulyakov S A Nikitin G A Politova K P Skokov |
| |
Institution: | (1) Baĭkov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiĭ pr. 49, Moscow, 117911, Russia;(2) Moscow State University, Leninskie gory, Moscow, 119992, Russia;(3) Tver State University, ul. Zhelyabova 33, Tver, 170002, Russia |
| |
Abstract: | This paper reports on the results of investigations into the concentration dependences of the magnetostrictive susceptibility, the magnetostriction, the magnetization, and the Curie temperature for Tb0.3Dy0.67Ho0.03Fe2?x Co x alloys upon substitution of cobalt for iron. It is revealed that the temperature of the spin-reorientation transition shifts toward room temperature with an increase in the cobalt content in the range 0 ≤ x ≤ 1.3. Substitution of cobalt for iron in the alloys leads to a decrease in the contribution of the 3d transition metal sublattice to the magnetic anisotropy owing to the opposite signs of the single-ion anisotropy constants for iron and cobalt. The decrease observed in the magnetocrystalline anisotropy compensated in both rare-earth and 3d transition metal sublattices is responsible for the high magnetostrictive susceptibility of the studied compounds at a high cobalt content (x = 1.3) in the room-temperature range. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|