Effect of nanocrystallization on the structure and the magnetic properties of Nd–Fe–Co–Al–B glassy alloy - Archive ouverte HAL
Article Dans Une Revue Journal of Applied Physics Année : 2006

Effect of nanocrystallization on the structure and the magnetic properties of Nd–Fe–Co–Al–B glassy alloy

Résumé

Nd 40 Fe 30 Co 15 Al 10 B 5 bulk amorphous prepared by high energy milling shows a coercivity of 650kA∕m with a Curie temperature of 645K. The controlled nanocrystallization enhances the coercivity to 1600kA∕m and the remanence ratio is equal to 0.59. The coexistence of two crystalline magnetic phases, ferromagnetic Nd2(Fe,Co,Al)14B, and antiferromagnetic Nd6(Fe,Co,Al)14 are revealed by x-ray diffraction, high-resolution transmission electron microscopy, magnetization measurements, and Mössbauer spectrometry. The grain size for optimal magnetic properties is around 30nm. The nucleation process may play a leading role in the high magnetic behavior.
Fichier non déposé

Dates et versions

hal-04232420 , version 1 (08-10-2023)

Identifiants

Citer

Lotfi Bessais, C. Djéga-Mariadassou, P. Beaunier. Effect of nanocrystallization on the structure and the magnetic properties of Nd–Fe–Co–Al–B glassy alloy. Journal of Applied Physics, 2006, 99 (9), ⟨10.1063/1.2195367⟩. ⟨hal-04232420⟩
19 Consultations
0 Téléchargements

Altmetric

Partager

More