Mechanical magnetometry of Cobalt nanospheres
deposited by focused electron beam at the tip of
ultra-soft cantilevers

• Authors: Hugo Lavenant , Vladimir Naletov , Olivier Klein , Grégoire de Loubens , Laura Casado , José María De Teresa
• Languages of publication: EN

Abstracts

EN

Using focused-electron-beam-induced
deposition, Cobalt magnetic nanospheres with diameter
ranging between 100 nm and 300 nm are grown at the tip
of ultra-soft cantilevers. By monitoring the mechanical
resonance frequency of the cantilever as a function of
the applied magnetic field, the hysteresis curve of these
individual nanospheres are measured. This enables the
evaluation of their saturation magnetization, found to
be around 430 emu/cm3 independent of the size of the
particle, and to infer that the magnetic vortex state is
the equilibrium configuration of these nanospheres at
remanence.SEM image of a 200 nm Co nanosphere grown at
the tip of an ultra-soft cantilever by focus electron beam induced
deposition.

Keywords

EN

Focused-electron-beam-induced deposition; Cobalt; nanomagnet; magnetic nanosphere; magnetic vortex; magnetometry; cantilever; mechanical detection

• Publisher: De Gruyter Open
• Journal: Nanofabrication
• Year: 2014
• Volume: 1
• Issue: 1

Dates

published

1 - 1 - 2014

accepted

15 - 5 - 2014

received

2 - 4 - 2014

online

26 - 6 - 2014

Contributors

author

Hugo Lavenant

• Service de Physique
  de l’État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-
  Yvette, France

author

Vladimir Naletov

• Service de Physique
  de l’État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-
  Yvette, France
• Institute of Physics, Kazan Federal University,
  Kazan 420008, Russian Federation

author

Olivier Klein

• Service de Physique
  de l’État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-
  Yvette, France

author

Grégoire de Loubens

• Service de Physique
  de l’État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-
  Yvette, France

author

Laura Casado

• Laboratorio de Microscopías
  Avanzadas (LMA), Instituto de Nanociencia de Aragón (INA),
  Universidad de Zaragoza, Mariano Esquillor 50018 Zaragoza, Spain

author

José María De Teresa

• Laboratorio de Microscopías
  Avanzadas (LMA), Instituto de Nanociencia de Aragón (INA),
  Universidad de Zaragoza, Mariano Esquillor 50018 Zaragoza, Spain
• Instituto de Ciencia de Materiales de Aragón
  (ICMA), Departamento de Física de la Materia Condensada,
  Universidad de Zaragoza-CSIC, Pedro Cerbuna 12, 50009 Zaragoza,
  Spain

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Identifiers

DOI

10.2478/nanofab-2014-0006