Structural and magnetic study of Mo-doped FINEMET

JOSEFINA SILVEYRA; VICTORIA CREMASCHI; D. JANIčKOVIč; PETER SVEC; BIBIANA ARCONDO

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ELSEVIER SCIENCE BV

Año: 2011 vol. 323 p. 290 - 296

0304-8853

In this paper, a study of the structural and the magnetic correlation of the crystalline and amorphousphases in the nano crystalline system Fe73.5Si13.5B9Nb3-xMoxCu1 (x=0, 1.5, 2, 3) was made. By means of  Mössbauer spectroscopy, simple mass balance considerations and density measurements, both phases fractions and chemical compositions were calculated (in at%, wt% and vol%). Then,quasi static magnetic measurements and ab initio calculations were used in a magnetic balance model in order to estimate the magnetic contribution of the remaining amorphous phase, which was compared to that of as-quenched amorphous samples of the same composition. The difference in both magnitudes showed the influence of penetrating fields and that these became more important for higher crystalline fractions.