Magnetization reversal in 3D nano-structures of different shapes

T. Blachowicz; A. Ehrmann

doi:10.1063/1.4945958

Magnetization reversal in 3D nano-structures of different shapes

T. Blachowicz
, A. Ehrmann

Division of Geochronology and Environmental Isotopes (RIF/RIF2)

Bielefeld University of Applied Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

Magnetic nano-particles have been intensively studied during the last decade due to their potential utilization in various applications. An important topic is the dependence of magnetic properties on the exact samples shape. After demonstrating the influence of shape distortions in magnetic nano half-spheres on magnetization reversal processes and hysteresis shapes, a series of different 3D nano-objects from permalloy with shape modifications has been examined with respect to their magnetic properties. Modifications are performed by cutting parts of diverse samples between the extrema of a cuboid and a half-sphere. Simulations of these samples have been performed by Magpar, using external magnetic fields along two different axes, swept with two different speeds. Depending on the original particle shape and its modifications, several phenomena can be found: Cutting a hole in a cuboid can switch the hard axis from out-of-plane to the in-plane direction. In some nano-particles, strong oscillations occur which can be suppressed by appropriate shape modifications. In some of the nano-objects, the magnetization reversal mechanism is completely altered by a change in the field sweeping speed. The article gives an overview of the different possibilities to tailor magnetic properties of nano-systems.

Original language	English
Title of host publication	International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015
Subtitle of host publication	Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition
Editors	Seda Kol, Mehmet Emre Akoz, Zehra Banu Bahsi Oral, Ahmet Yavuz Oral, Mehmet Sezer
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735413740
DOIs	https://doi.org/10.1063/1.4945958
Publication status	Published - 21 Apr 2016
Event	5th International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015 - Oludeniz, Turkey Duration: 16 Apr 2015 → 19 Apr 2015

Publication series

Name	AIP Conference Proceedings
Volume	1727
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	5th International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015
Country/Territory	Turkey
City	Oludeniz
Period	16/04/15 → 19/04/15

Keywords

3D nano-magnet
Magnetic anisotropy
Shape modifications
Simulation

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.4945958

Cite this

Blachowicz, T., & Ehrmann, A. (2016). Magnetization reversal in 3D nano-structures of different shapes. In S. Kol, M. E. Akoz, Z. B. Bahsi Oral, A. Y. Oral, & M. Sezer (Eds.), International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015: Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition Article 020003 (AIP Conference Proceedings; Vol. 1727). American Institute of Physics Inc.. https://doi.org/10.1063/1.4945958

Blachowicz, T. ; Ehrmann, A. / Magnetization reversal in 3D nano-structures of different shapes. International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015: Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition. editor / Seda Kol ; Mehmet Emre Akoz ; Zehra Banu Bahsi Oral ; Ahmet Yavuz Oral ; Mehmet Sezer. American Institute of Physics Inc., 2016. (AIP Conference Proceedings).

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abstract = "Magnetic nano-particles have been intensively studied during the last decade due to their potential utilization in various applications. An important topic is the dependence of magnetic properties on the exact samples shape. After demonstrating the influence of shape distortions in magnetic nano half-spheres on magnetization reversal processes and hysteresis shapes, a series of different 3D nano-objects from permalloy with shape modifications has been examined with respect to their magnetic properties. Modifications are performed by cutting parts of diverse samples between the extrema of a cuboid and a half-sphere. Simulations of these samples have been performed by Magpar, using external magnetic fields along two different axes, swept with two different speeds. Depending on the original particle shape and its modifications, several phenomena can be found: Cutting a hole in a cuboid can switch the hard axis from out-of-plane to the in-plane direction. In some nano-particles, strong oscillations occur which can be suppressed by appropriate shape modifications. In some of the nano-objects, the magnetization reversal mechanism is completely altered by a change in the field sweeping speed. The article gives an overview of the different possibilities to tailor magnetic properties of nano-systems.",

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author = "T. Blachowicz and A. Ehrmann",

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Blachowicz, T & Ehrmann, A 2016, Magnetization reversal in 3D nano-structures of different shapes. in S Kol, ME Akoz, ZB Bahsi Oral, AY Oral & M Sezer (eds), International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015: Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition., 020003, AIP Conference Proceedings, vol. 1727, American Institute of Physics Inc., 5th International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015, Oludeniz, Turkey, 16/04/15. https://doi.org/10.1063/1.4945958

Magnetization reversal in 3D nano-structures of different shapes. / Blachowicz, T.; Ehrmann, A.
International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015: Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition. ed. / Seda Kol; Mehmet Emre Akoz; Zehra Banu Bahsi Oral; Ahmet Yavuz Oral; Mehmet Sezer. American Institute of Physics Inc., 2016. 020003 (AIP Conference Proceedings; Vol. 1727).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Magnetization reversal in 3D nano-structures of different shapes

AU - Blachowicz, T.

AU - Ehrmann, A.

PY - 2016/4/21

Y1 - 2016/4/21

N2 - Magnetic nano-particles have been intensively studied during the last decade due to their potential utilization in various applications. An important topic is the dependence of magnetic properties on the exact samples shape. After demonstrating the influence of shape distortions in magnetic nano half-spheres on magnetization reversal processes and hysteresis shapes, a series of different 3D nano-objects from permalloy with shape modifications has been examined with respect to their magnetic properties. Modifications are performed by cutting parts of diverse samples between the extrema of a cuboid and a half-sphere. Simulations of these samples have been performed by Magpar, using external magnetic fields along two different axes, swept with two different speeds. Depending on the original particle shape and its modifications, several phenomena can be found: Cutting a hole in a cuboid can switch the hard axis from out-of-plane to the in-plane direction. In some nano-particles, strong oscillations occur which can be suppressed by appropriate shape modifications. In some of the nano-objects, the magnetization reversal mechanism is completely altered by a change in the field sweeping speed. The article gives an overview of the different possibilities to tailor magnetic properties of nano-systems.

AB - Magnetic nano-particles have been intensively studied during the last decade due to their potential utilization in various applications. An important topic is the dependence of magnetic properties on the exact samples shape. After demonstrating the influence of shape distortions in magnetic nano half-spheres on magnetization reversal processes and hysteresis shapes, a series of different 3D nano-objects from permalloy with shape modifications has been examined with respect to their magnetic properties. Modifications are performed by cutting parts of diverse samples between the extrema of a cuboid and a half-sphere. Simulations of these samples have been performed by Magpar, using external magnetic fields along two different axes, swept with two different speeds. Depending on the original particle shape and its modifications, several phenomena can be found: Cutting a hole in a cuboid can switch the hard axis from out-of-plane to the in-plane direction. In some nano-particles, strong oscillations occur which can be suppressed by appropriate shape modifications. In some of the nano-objects, the magnetization reversal mechanism is completely altered by a change in the field sweeping speed. The article gives an overview of the different possibilities to tailor magnetic properties of nano-systems.

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KW - Magnetic anisotropy

KW - Shape modifications

KW - Simulation

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T3 - AIP Conference Proceedings

BT - International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015

A2 - Kol, Seda

A2 - Akoz, Mehmet Emre

A2 - Bahsi Oral, Zehra Banu

A2 - Oral, Ahmet Yavuz

A2 - Sezer, Mehmet

PB - American Institute of Physics Inc.

T2 - 5th International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015

Y2 - 16 April 2015 through 19 April 2015

ER -

Blachowicz T, Ehrmann A. Magnetization reversal in 3D nano-structures of different shapes. In Kol S, Akoz ME, Bahsi Oral ZB, Oral AY, Sezer M, editors, International Advances in Applied Physics and Materials Science Congress and Exhibition, APMAS 2015: Proceedings of the 5th International Advances in Applied Physics and Materials Science Congress and Exhibition. American Institute of Physics Inc. 2016. 020003. (AIP Conference Proceedings). doi: 10.1063/1.4945958

Magnetization reversal in 3D nano-structures of different shapes

Abstract

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