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For the amorphous alloy of nominal composition Co53Fe5Ni10Si11B16 magnetic properties such as the anisotropy energy, the initial susceptibility, the coercive field, and the remanent magnetization are investigated at room temperatue as functins of an applied tensile stress. From an analysis of the magnetization process in the presence of applied and internal stresses the mean value of the compressive internal stresses and the saturation magnetostriction constant are determined.

The law of' approach to ferromagnetic saturation is invcstigated for nearly noiim,~gnetostrictivc Co,,Fe,Ni,,B,,Si,, and for highly mirgnctostrictive Fe,,Ni,,,P,,B, amorphous alloys after differcnt thermal t.rentmcnt.s and annenlings under applied strosses which produce inelastic deformations. \Yhile thermal t,reat,merit,s modify the parameters of the law of approach t o saturation for tlio mirgnetostrictivc alloy, these parameters remain unclrangerl for the nearly non-magnetostrictive alloy. Moreover, it cim be concluded that for the Istter alloy, although macroscopically its sat'imt'ion magnetost'riction is of the order of 1 x 1oc:d fluctuations of tbc niagnetostrict'ion c i m rench values up to 2 x Das Einmundungsgesotz in die ferroinagnetische Siittigung mird fur nahezu niclitmlLanctostrilitive Co,,Pc,Ni,,B,,Si,,soivic hochmagnetostriktive Fo,,Ni,,P,,B,-Legierungen nach vcrschirdenen Anlal3behandlungen rind Anlassen unter angelegten Spannangen, die inelastisclie Deformationen erzcngen, untersncht. IViihrend thermische Beliandlungcn die Parameter dcs Einmiindungsgesetzes im Fall cler magnetostriktiven Legierungen verandern, bleibcn diese Parameter bci der nahezn niclitmagnetostriktiven Legierang unvcrandcrt. Ferner ergibt sich fur dieso Ict,ztero IRgierung, obgleicli deren makroskopische Magnetostriktion von der GroRenordnung lo-' ist, daJ31okii.le Fhilrtnntjonen drr Magnetostriktion IVcrtc bis zii 2 x 10-6 crrcichen konnen.