Spin torque oscillator frequency versus magnetic field angle: The prospect of operation beyond 65 GHz

被引：151

作者：

Bonetti, Stefano ^{[1
]}

Muduli, Pranaba ^{[1
]}

Mancoff, Fred ^{[2
]}

Akerman, Johan ^{[1
,3
]}

机构：

[1] Royal Inst Technol, Dept Microelect & Appl Phys, S-16440 Kista, Sweden

[2] Everspin Technol Inc, Chandler, AZ USA

[3] Gothenburg Univ, Dept Phys, S-41296 Gothenburg, Sweden

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 10期

基金：

瑞典研究理事会;

关键词：

cobalt alloys; copper; iron alloys; nanocontacts; nanoelectronics; nickel alloys; oscillators; spin valves; spin waves; MICROWAVE GENERATION; DRIVEN; EMISSION;

D O I：

10.1063/1.3097238

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the impact of the magnetic field angle on the oscillation frequency of a nanocontact spin torque oscillator (STO) in magnetic fields up to 2.1 T. A model based on a single nonlinear, nonpropagating spin wave mode is found to explain the experimental data. We observe oscillation frequencies as high as 46 GHz in high magnetic fields applied normal to the film plane, and we are able to extrapolate the maximum expected operating frequency to beyond 65 GHz for in-plane magnetic fields. The STO signal remains surprisingly strong at these conditions, which opens up for possible millimeter-wave applications.

引用

页数：3

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