A STUDY OF THE MAGNETIC-STRUCTURE OF THE ORDERED ALLOYS FE(PD1-XAUX)(3)

The antiferromagnetic structure with the wave vector K=[OO1/2], corres ponding to one prong of a three-pronged star {K-10} in a simple cubic lattice Gamma(C) is realized at atomic ordering in alloys Fe(Pd(1-x)AU (x))(3) in the range 0.133 < x < 0.4. The magnetic moments of the Fe a toms are oriented antiparallel to the direction [001]. Their values de pend on the Au concentration in the alloy. The magnetic phase diagram of these alloys, where the coexistence of ferro- and antiferromagnetis m is discussed in the framework of noncollinear magnetic structures, w as determined. (C) 1996 American Institute of Physics.