Domain observations of Fe and Co based amorphous wires

Conference · Mon Nov 01 00:00:00 EST 1993 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:7074132

Takajo, M; Yamasaki, J ^[1]; Humphrey, F B ^[2]

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1. Kyushu Institute of Technology, Kitakyushu (Japan). Dept. of Electrical Engineering
2. Boston Univ., MA (United States)

Domain observations were made on Fe and Co based amorphous magnetic wires that exhibit a large Barkhausen discontinuity during flux reversal. Domain patterns observed on the wire surface were compared with those found on a polished section through the center of the wire. It was confirmed that the Fe based wire consists of a shell and core region as previously proposed, however, there is a third region between them. This fairly thick transition region made up of domains at an angle of about 45[degree] to the wire axis clearly lacking the closure domains of the previous model. The Co based wire does not have a clear core and shell domain structure. The center of the wire had a classic domain structure expected of uniaxial anisotropy with the easy axis normal to the wire axis. When a model for the residual stress quenched-in during cooling of large Fe bars is applied to the wire, the expected anisotropy is consistent with the domain patterns in the Fe based wire, however, shape anisotropy still plays a dominant role in defining the wire core in the Co based wire.

• OSTI ID: 7074132
• Report Number(s): CONF-930416-; CODEN: IEMGAQ
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Vol. 29:6; Conference: INTERMAG '93: international magnetics conference, Stockholm (Sweden), 13-16 Apr 1993; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
DOMAIN STRUCTURE
COBALT BASE ALLOYS
IRON BASE ALLOYS
SILICON ALLOYS
AMORPHOUS STATE
EXPERIMENTAL DATA
HYSTERESIS
MAGNETOSTRICTION
ALLOYS
COBALT ALLOYS
DATA
INFORMATION
IRON ALLOYS
MAGNETIC PROPERTIES
NUMERICAL DATA
PHYSICAL PROPERTIES
360104* - Metals & Alloys- Physical Properties