Reversal Mechanism of an Individual Ni Nanotube Simultaneously Studied by Torque and SQUID Magnetometry

被引：52

作者：

Buchter, A. ^{[1
]}

Nagel, J. ^{[2
,3
]}

Rueffer, D. ^{[4
]}

Xue, F. ^{[1
]}

Weber, D. P. ^{[1
]}

Kieler, O. F. ^{[5
]}

Weimann, T. ^{[5
]}

Kohlmann, J. ^{[5
]}

Zorin, A. B. ^{[5
]}

Russo-Averchi, E. ^{[4
]}

Huber, R. ^{[6
]}

Berberich, P. ^{[6
]}

Fontcuberta i Morral, A. ^{[4
]}

Kemmler, M. ^{[2
,3
]}

Kleiner, R. ^{[2
,3
]}

Koelle, D. ^{[2
,3
]}

Grundler, D. ^{[6
,7
]}

Poggio, M. ^{[1
]}

机构：

[1] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland

[2] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

[3] Univ Tubingen, Ctr Collect Quantum Phenomena LISA, D-72076 Tubingen, Germany

[4] Ecole Polytech Fed Lausanne, Lab Mat Semicond, Inst Mat, CH-1015 Lausanne, Switzerland

[5] Phys Tech Bundesanstalt, Fachbereich Quantenelekt 2 4, D-38116 Braunschweig, Germany

[6] Tech Univ Munich, Lehrstuhl Phys Funktionaler Schichtsyst, Phys Dept E10, D-85747 Garching, Germany

[7] Ecole Polytech Fed Lausanne, Inst Mat, Fac Sci & Tech Ingenieur, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 06期

关键词：

MAGNETIZATION; NANOMAGNETS;

D O I：

10.1103/PhysRevLett.111.067202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an optimally coupled nanometer-scale SQUID, we measure the magnetic flux originating from an individual ferromagnetic Ni nanotube attached to a Si cantilever. At the same time, we detect the nanotube's volume magnetization using torque magnetometry. We observe both the predicted reversible and irreversible reversal processes. A detailed comparison with micromagnetic simulations suggests that vortexlike states are formed in different segments of the individual nanotube. Such stray-field free states are interesting for memory applications and noninvasive sensing.

引用

页数：5

共 33 条

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