Correlation between domain structure, surface anisotropy and high frequency magneto-impedance in Joule annealed CoFe-based melt-spun ribbons

被引：14

作者：

Eggers, T. ^{[1
]}

Leary, A. ^{[2
]}

McHenry, M. ^{[2
]}

Marcin, J. ^{[3
]}

Skorvanek, I. ^{[3
]}

Srikanth, H. ^{[1
]}

Phan, M. H. ^{[1
]}

机构：

[1] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[2] Carnegie Mellon Univ, Mat Sci & Engn Dept, Pittsburgh, PA 15213 USA

[3] Slovak Acad Sci, Inst Expt Phys, Watsonova 47, Kosice 04001, Slovakia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 682卷

关键词：

Fe-rich amorphous ribbons; Surface anisotropy; Magneto-impedance; Magnetic sensors; GIANT MAGNETOIMPEDANCE; FIELD; ALLOYS;

D O I：

10.1016/j.jallcom.2016.04.312

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

(Fe65Co35)(83.5-x)B13NbxSi2Cu1.5 amorphous ribbons with (4 at.%) and without (0 at.%) growth inhibitor Nb were Joule annealed at low current intensity to avoid bulk crystallization, and their surface domain structure, bulk and surface magnetization, and high frequency magneto-impedance (MI) were systematically investigated. Magneto-optic Kerr effect (MOKE) microscopy and longitudinal MOKE evidenced the development of a longitudinal surface anisotropy in the ribbon without Nb (Nb0) as a result of the Joule annealing treatment, while the 4 at.% Nb (Nb4) ribbon developed an anisotropy 30 degrees from the transverse direction. The increased transverse ac permeability at the surface of Nb4 was evident in MI measurements by a higher [Delta Z/Z](max) as compared to Nb0 at frequencies greater than 200 MHz. A correlation between the surface domain structure, induced anisotropy and high frequency MI in the ribbons was established. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：799 / 804

页数：6

共 24 条

[1] GIANT MAGNETIC-FIELD DEPENDENT IMPEDANCE OF AMORPHOUS FECOSIB WIRE [J].