Precessional dynamics of elemental moments in a ferromagnetic alloy

被引：64

作者：

Bailey, WE ^{[1
]}

Cheng, L

Keavney, DJ

Kao, CC

Vescovo, E

Arena, DA

机构：

[1] Columbia Univ, Dept Appl Phys, Mat Sci Program, New York, NY 10027 USA

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] Brookhaven Natl Lab, Natl Synchrotron Light Source Dept, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.70.172403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate an element-specific measurement of magnetization precession in a metallic ferromagnetic alloy, separating Ni and Fe moment motion in Ni81Fe19. Pump-probe x-ray magnetic circular dichroism, synchronized with short magnetic field pulses, is used to measure free magnetization oscillations up to 2.6 GHz with elemental specificity and a rotational resolution of <2degrees. Magnetic moments residing on Ni sites and Fe sites in a Ni81Fe19(50 nm) thin film are found to precess together at all frequencies, coupled in phase within instrumental resolution of 90 ps.

引用

页码：1 / 4

页数：4

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