Spin dynamics at low microwave frequencies in crystalline Fe ultrathin film double layers using co-planar transmission lines

被引：15

作者：

Mosendz, O

Kardasz, B

Schmool, DS

Heinrich, B

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[2] Univ Porto, Dept Fis, Fac Ciencias, P-4169007 Oporto, Portugal

[3] Univ Porto, IFIMUP, P-4169007 Oporto, Portugal

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 300卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

FMR; network analyzer; coplanar transmission fine; spin dynamics; Gilbert damping; spin-pumping; crystalline anisotropy; MBE;

D O I：

10.1016/j.jmmm.2005.10.058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic damping has been studied in magnetic double layers using a network analyzer (NA) with a coplanar transmission line. The magnetic films consisted Of Ultrathin crystalline films of Fe separated by an An spacer. The films were deposited on GaAs(001) Substrates using the molecular beam epitaxy (MBE) technique. NA-ferromagnetic resonance (NA-FMR) measurements were carried out along the magnetic hard axis, allowing one to follow the frequency FMR linewidth down to the I GHz range of frequencies. It will be shown that the FM R linewidth in the NA-FMR measurements is not entirely described by Gilbert damping. The additional contribution in the frequency linewidth increases with decreasing frequency, and is most likely caused by dipolar fields associated with an inhomogeneous RF field around the coplanar transmission line. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：174 / 178

页数：5

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