Magnetoimpedance of NiFe/Ag multilayers in the 100 kHz-1.8 GHz range

被引：12

作者：

de Andrade, AMH ^{[1
]}

da Silva, RB ^{[1
]}

Correa, MA ^{[1
]}

Viegas, ADC ^{[1
]}

Severino, AM ^{[1
]}

Sommer, RL ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

magnetoimpedance; high frequcncy; multilayers; films permalloy;

D O I：

10.1016/j.jmmm.2003.12.826

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetoimpedance curves at frequencies up to 1.8 GHz for (Ni81Fe19/Ag)n multilayers with n = 15, 50 and 100, and thickness ratio t(Py)/t(Ag): 100/7, 100/25, 100/100, 200/14, 200/50 and 200/200 Angstrom are presented. Evidences of FMR are observed in most samples studied. Samples with 15, 50 and 100 bilayers exhibited a maximum MI ratio of about 100%, 175% and 250%, respectively. For samples with t(Py) = 4t(Ag),, peculiar impedance spectra with 4 peaks were observed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1846 / 1847

页数：2

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