Tailoring the magnetoimpedance effect of NiFe/Ag multilayer

被引：75

作者：

Correa, M. A. ^{[1
]}

Bohn, F. ^{[2
]}

Chesman, C. ^{[1
]}

da Silva, R. B. ^{[3
]}

Viegas, A. D. C. ^{[4
]}

Sommer, R. L. ^{[5
]}

机构：

[1] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59078970 Natal, RN, Brazil

[2] Univ Fed Rio Grande do Norte, Escola Ciencias & Tecnol, BR-59072970 Natal, RN, Brazil

[3] Univ Fed Pampa, BR-96570000 Cacapava Do Sul, RS, Brazil

[4] Univ Fed Santa Catarina, Dept Fis, BR-88010970 Florianopolis, SC, Brazil

[5] Ctr Brasileiro Pesquisas Fis, BR-22280180 Rio De Janeiro, Brazil

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 29期

关键词：

GIANT MAGNETO-IMPEDANCE; FILM; MI; SENSOR;

D O I：

10.1088/0022-3727/43/29/295004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetoimpedance (MI) effect was investigated in NiFe/Ag multilayered (ML) and ML/SiO2/Ag/SiO2/ML structured multilayered (SD) ferromagnetic films grown by magnetron sputtering. The MI measurements were performed with an impedance analyzer over a wide frequency range, from 10 MHz to 1.8 GHz. Sample geometries are mainly responsible for the different MI behaviours and by considering the entire frequency range, distinct mechanisms responsible for MI changes were associated. For the ML sample, a maximum value of 80%, associated with the appearance of ferromagnetic resonance (FMR), was reached at around 1 GHz. For the SD sample, the striking feature is the existence of two distinct frequency ranges with high MI% values of 80% at around 100 MHz, related to the skin and magnetoinductive effects, and of 120% at around 1 GHz, associated with the strong skin and FMR effect.

引用

页数：7

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