The temperature dependence of the magnetization of the quenched and slowly cooled samples of Fe7 Se8 and (Fe1-x Mx) Se8 samples with M = cobalt and nickel and x= 0.02, 0.05 and 0.08 are given All the thermomagnetic curves obtained belong to the Weiss ferromagnetic type. Discontinuities indicating a magnetic transformation to antiferromagnetic order were obtained for some samples. The magnetic moment at 0 and 68 K (M0 and M78) dependence on nickel and cobalt concentrations are given. The temperature dependence of the reciprocal susceptibility in the paramagnetic range was studied, and the number of unpaired electrons were calculated. The thermal variation of the electrical conductivity of the host material, Fe7 Se8, is given.
|Title||MAGNETIC PROPERTIES OF (Fe1-x Mx) Se8||Authors||Abdelaal, Mervat||Issue Date||1988||Publisher||0022-2461/88 $03.00 + .12 © 1988 Chapman and Hall Ltd||Journal||JOURNAL OF MATERIALS SCIENCE 23 (1988) 3490 – 3494||URI||http://research.asu.edu.eg/handle/123456789/167895|
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