MAGNETIC-PROPERTIES OF THE SYSTEM FE(AL,MN)

Magnetization measurements on the alloy FeAl1-xMnx (0.27 less than or equal to x less than or equal to 0.6) system have been carried out in the temperature range 85 less than or equal to T less than or equal to 300 K, and in magnetic fields up to 8 kOe. The analysis of the isothe rmal magnetization curves show that the samples of x less than or equa l to 0.31 are paramagnetic and that of x greater than or equal to 0.35 are ferromagnetically ordered. The susceptibilities of the paramagnet ic samples were found to obey a Curie-Weiss law with negative paramagn etic temperatures. The magnetic behaviour was explained on the assumpt ion of the coexistence of both the ferromagnetic and anti-ferromagneti c interactions in each sample. (C) 1998 Elsevier Science B.V. All righ ts reserved.