Nanotorsional resonator torque magnetometry

被引：46

作者：

Davis, J. P. ^{[1
]}

Vick, D. ^{[2
]}

Fortin, D. C. ^{[1
]}

Burgess, J. A. J. ^{[1
,2
]}

Hiebert, W. K. ^{[2
]}

Freeman, M. R. ^{[1
,2
]}

机构：

[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada

[2] Natl Inst Nanotechnol, Edmonton, AB T6G 2M9, Canada

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

focused ion beam technology; light interferometry; magnetisation; magnetometers; Permalloy; silicon compounds; CANTILEVER MAGNETOMETRY; OSCILLATORS; TEMPERATURE;

D O I：

10.1063/1.3319502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic torque is used to actuate nanotorsional resonators, which are fabricated by focused-ion-beam milling of permalloy coated silicon nitride membranes. Optical interferometry is used to measure the mechanical response of two torsion modes at resonance, which is proportional to the magnetization vector of the nanomagnetic volume. By varying the bias magnetic field, the magnetic behavior can be measured with excellent sensitivity (approximate to 10(8)mu(B)) for single magnetic elements.

引用

页数：3

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