1. Melt-Spun Fe–Co–B–Cu Alloys With High Magnetic Flux Density for Relax-Type Magnetometers
- Author
-
Jozef Marcin, Alexius Klinda, Peter Svec, Dusan Praslicka, Josef Blazek, Jozef Kovac, and Ivan Skorvanek
- Subjects
Materials science ,Condensed matter physics ,Magnetometer ,Coercivity ,Magnetic hysteresis ,Magnetic flux ,Electronic, Optical and Magnetic Materials ,Magnetic field ,Amorphous solid ,law.invention ,Nuclear magnetic resonance ,law ,Electrical and Electronic Engineering ,Melt spinning ,Crystallization - Abstract
Melt-spun Fe63 Co21 B15Cu ribbons were annealed at temperatures between 573 K and 623 K 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 × 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.
- Published
- 2010