The magnetic properties of the hypothetic compounds RFe5 (R = Y. Gd) have b
een investigated by making use of the substituted compounds R(Ni1-xFex)(5),
where R = Y and Gd. X-ray analysis, magnetic measurements and Mossbauer ef
fect were carried out. In the case of Y (x less than or equal to 0.5), the
moments at the 2c and 3g sites, and other properties are determined. By an
extrapolation to x = 1. the magnetic properties of RFe5 are estimated. In G
d (x less than or equal to 0.4), metamagnetic phenomena are found. (C) 2001
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