Xf. Han et al., FORMATION AND MAGNETIC-PROPERTIES OF NEW COMPOUNDS R3FE29-XCRX (R=Y, CE, ND, SM, GD, TB, AND DY), Acta physica Sinica, 6(6), 1997, pp. 445-455
A systematic investigation of structure and magnetic properties of the
new R3Fe29-xCrx compounds( R = Y, Ce, Nd, Sm, Gd, Tb, and Dy) has bee
n performed. The Curie temperature of R3Fe29-xCrx, increased with incr
easing atomic number from R = Ce to Gd and decreased from Gd to Dy. Th
e saturation magnetization of R3Fe29-xCrx at 4.2 K decreased gradually
with increasing atomic number from R = Y to Dy, except for Ce. The sp
in reorientations of the easy magnetization direction were observed at
around 230 K for Nd3Fe24.5Cr4.5 and 180 K for Tb3Fe28.0Cr1.0, and the
magnetohistory effects were observed for Nd3Fe24.5Cr4.5 and Sm3Fe24.0
Cr5.0 in a low field of about 0.04 T. First order magnetization proces
s occurs in magnetic field of around 2.3 T at room temperature for Tb3
Fe28.0Cr1.0. The saturation magnetization of Y3Fe27.2Cr1.8 at 4.2 K is
52.2 mu(B)/f.u., which corresponds to an average magnetic moment of 1
.92 mu(B) per each Fe atom.