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Superparamagnetic behaviour of Hf_{;57};Fe_{;43}; amorphous alloy (CROSBI ID 522517)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Pajić, Damir ; Zadro, Krešo ; Ristić, Ramir ; Babić, Emil Superparamagnetic behaviour of Hf_{;57};Fe_{;43}; amorphous alloy // International conference on magnetism 2006 - ABSTRACTS / Miyake, K. ; Kitaoka, Y. (ur.). Kyoto: ICM 2006, 2006. str. 602-602-x

Podaci o odgovornosti

Pajić, Damir ; Zadro, Krešo ; Ristić, Ramir ; Babić, Emil

engleski

Superparamagnetic behaviour of Hf_{;57};Fe_{;43}; amorphous alloy

In Hf_{;100-x};Fe_{;x}; amorphous system the stablishing of long range magnetic order depends on the iron concentration. For the investigated Hf_{;57};Fe_{;43}; alloy this concentration is just below the threshold for long range ordering. Therefore, the magnetic clusters of iron with relatively high magnetic moments formed in nonmagnetic matrix are expected. Their behaviour shows to be superparamagnetic. Detailed measurements including magnetic hysteresis loops, dependence of magnetic moment on temperature and the relaxation of magnetization are performed. The splitting between zero-field cooled and field cooled magnetic moment curves points to the blocking of magnetic moment of the clusters. This is the origin of hysteresis loops below the blocking temperature. Slow relaxation of magnetic moment is logarithmic, which indicates that the moments relax over the distributed barriers. Using the model of thermal relaxation it is found that the average size of magnetic clusters is approximately 10nm.

Hf-Fe; binary magnetic/nonmagnetic amorphous alloy; superparamagne tic relaxation; blocking temperature

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Podaci o prilogu

602-602-x.

2006.

objavljeno

Podaci o matičnoj publikaciji

International conference on magnetism 2006 - ABSTRACTS

Miyake, K. ; Kitaoka, Y.

Kyoto: ICM 2006

Podaci o skupu

International conference on magnetism 2006

poster

20.08.2006-25.08.2006

Kyoto, Japan

Povezanost rada

Fizika