Melt-Spun Fe-Co-B-Cu Alloys With High Magnetic Flux Density for Relax-Type Magnetometers

作者：Marcin Jozef; Klinda Alexius; Svec Peter; Praslicka Dusan; Blazek Josef; Kovac Jozef; Svec Peter Sr; Skorvanek Ivan^*

来源：IEEE Transactions on Magnetics, 2010, 46(2): 416-419.

DOI：10.1109/TMAG.2009.2033815

• Alloys
• amorphous magnetic materials
• induced anisotropy
• magnetic sensors
• magnetic annealing

Melt-spun Fe(63)Co(21)B(15)Cu ribbons were annealed at temperatures between 573K and 623K in longitudinal and transverse-magnetic field in order to prepare a representative set of relaxed amorphous and partially crystallized samples having uniaxial anisotropy. The optimal magnetic characteristics for the relaxation sensor were obtained after longitudinal field annealing for 1 h at 593 K, which corresponds to early crystallization stage in the heat treated amorphous material. The magnetic flux density after such heat treatment reaches 1.83 T and the value of coercive field is 4.2 A/m. The corresponding relaxation characteristics obtained by using ferroprobe designed as a flat, double-layer coil tightly surrounding the ribbon core with the dimensions of 60 x 3 mm show good prospects for the potential use of these alloys as core materials in the relax-type fluxgate magnetometers mainly due to the extending of their linear measuring range as compared to the currently used commercial materials while keeping the similar sensitivity.

• 出版日期2010-2