Effect of Co or Mn addition on the soft magnetic properties of amorphous Fe89−xZr11Bx (x=5, 10) alloy ribbons

Effect of minor additions on the glass forming ability and magnetic properties of Fe–Nb–B based metallic glasses

“…7. This result is in accordance with reported data on similar systems [27][28][29]. Since the Co atom is very similar to Fe, the replacement of Fe by Co does not change the first-neighbour structure but only the mean magnetic moment, based on the Slater-Pauling curve [1].…”

Structural and magnetic properties of nanocrystalline Fe–Co–Si alloy powders produced by mechanical alloying

“…This kind of behavior could be correlated to the change in the structural parameters due to the difference in the alloying process caused by the delay in the dissolution of Co into Fe lattice in the presence of more Si content. Nevertheless, the general increase in M S could be attributed to the atomic ordering as discussed earlier and the observed results are in good agreement with the earlier reports on similar systems [11,24,31,33]. Note that such atomic ordering can induce additional magnetic anisotropy which may deteriorate the soft magnetic properties of the milled powders.…”

“…T C increases at a rate of nearly 4 K per at.% Co for the Co substitution up to 10 at.%, but the rate of increase in T C drops down largely to 1.4 K per at.% Co for Co substitution above 10 at.%. The rate of increase in T C with Co content in the presently investigated alloy is substantially low as compared to the values reported in Co substituted amorphous Fe-based alloys: 12e13 K per at.% Co in amorphous Fe 89ÀxÀy Zr 11 B x Co y alloys [33] and~14 K per at.% Co in amorphous Fe 82Àx Co x Nb 3 Ta 1 Mo 1 B 13 alloys [41]. This could be attributed mainly to the sample preparation techniques involving different kinematics on the formation of final alloys.…”

Enhanced soft magnetic properties in magnetic field annealed amorphous Fe(Co)–Zr–B alloys

“…For the as-quenched alloys and the samples annealed below 673 K, the BF TEM micrographs (not shown here) revealed an even contrast and the SAED patterns exhibited a typical diffuse ring, characteristic of the amorphous structure. 16 On the other hand, for the Fe 79Ày Co y Zr 11 B 10 (y ¼ 0 and 5) alloys annealed at 823 K [ Figs. 1(a)] showed a plain and even contrast micrograph, the high resolution TEM (HRTEM) image (not shown here) revealed the formation of fine bcc nanocrystals with an average size between 3 and 5 nm.…”