The University of Western Australia

UWA Staff Profile

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Peter Metaxas

Dr Peter Metaxas

Research Fellow
Academic Staff (Physics)

Contact details
Address
Academic Staff (Physics)
The University of Western Australia (M013)
35 Stirling Highway
CRAWLEY WA 6009
Australia
Phone
+61 8 6488 7015
Fax
+61 8 6488 7364
Email
peter.metaxas@uwa.edu.au
Qualifications
BSc W.Aust., PhD W.Aust. & Paris-Sud 11
Biography
After completing my BSc (1st class Hons) at UWA, I carried out a joint-badged PhD between UWA and the Université Paris-Sud 11 in Orsay, France. Supervised by Professor Bob Stamps and Dr Jacques Ferré, my work was focussed on using magneto-optical microscopy to study the dynamics of magnetic domain walls in ultrathin, ferromagnetic Cobalt films. Magnetic domain walls are highly localised "twists" in the local magnetisation direction in a ferromagnet and can be moved using magnetic fields or electrical currents. There is significant interest in using domain walls for addressable data storage devices and memristors. My PhD work tested links between general theories for elastic interface motion and magnetic domain wall dynamics in weakly disordered quasi-2D films. Post-doctoral work kept me in the Paris region where I worked in the Unité Mixte de Physique CNRS/Thales looking at dynamics, depinning and resonances of domain walls in magneto-electronic (or "spintronic") devices using electrical current injection to probe and drive wall dynamics. I then took a short break from magnetism research in 2012, spending 6 months in Associate Professor Jennfier Curtis' group at Georgia Tech (Atlanta, USA) working on chemical sensors based on epitaxial graphene, a trip funded by an American-Australian Association Pratt fellowship. My current work is focused on nanomagnetic and spintronic nanoparticle detection for biomedical applications with funding from an Australian Research Council Discovery Early Career Researcher Award (DECRA) and the AOARD.
Key research
Spintronics
Magnetisation dynamics
Domain wall dynamics
Magnetic nanostructures
Magneto-optics
Biosensing
Publications
An external publication list can be found at http://www.researcherid.com/rid/D-3695-2011

Pre-prints:

(22) J.P. Fried, H. Fangohr, M. Kostylev, P.J. Metaxas, "Exchange-mediated, non-linear, out-of-plane magnetic field dependence of the ferromagnetic vortex gyrotropic mode frequency driven by core deformation", https://arxiv.org/abs/1605.01830 (2016).

(21) M. Sushruth, J.P. Fried, A. Anane, S. Xavier, C. Deranlot, M. Kostylev, V. Cros, P.J. Metaxas, "Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core", https://arxiv.org/abs/1605.01826 (2016).

(20) M. Albert, M. Beg, D. Chernyshenko, M.-A. Bisotti, R.L. Carey, H. Fangohr, P.J. Metaxas, "Frequency-based nanoparticle sensing over large field ranges using the ferromagnetic resonances of a magnetic nanodisc", http://arxiv.org/abs/1604.07277 (2016).

(19) M. Sushruth, J. Ding, J. Duczynski, R.C. Woodward, R.A. Begley, H. Fangohr, R.O. Fuller, A.O. Adeyeye, M. Kostylev, P.J. Metaxas, "Resonance-based Detection of Magnetic Nanoparticles and Microbeads Using Nanopatterned Ferromagnets", https://arxiv.org/abs/1604.05835 (2016).

Peer-reviewed articles:

(18) J.P. Fried and P.J. Metaxas, "Localized magnetic fields enhance the field-sensitivity of the gyrotropic resonance frequency of a magnetic vortex", Phys. Rev. B, 93, 064422 (2016).

(17) P.J. Metaxas, M. Albert, S. Lequeux, V. Cros, J. Grollier, P. Bortolotti, A. Anane and H. Fangohr, "Resonant translational, breathing and twisting modes of pinned transverse magnetic domain walls", Phys. Rev. B, 93, 054414 (2016).

(16) P.J. Metaxas, M. Sushruth, R.A. Begley, J. Ding, R.C. Woodward, I.S. Maksymov, M. Albert, W. Wang, H. Fangohr, A.O. Adeyeye and M. Kostylev, "Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal", Appl. Phys. Lett., 106, 232406 (2015).

(15) R.L. Novak, P.J. Metaxas, J.P. Jamet, R. Weil, J. Ferre, A. Mougin, S. Rohart, R.L. Stamps, P.J. Zermatten, G. Gaudin, V. Baltz, B. Rodmacq, "Highly asymmetric magnetic domain wall propagation due to coupling to a periodic pinning potential", J. Phys. D.: Appl. Phys., 48, 235004 (2015).

(14) R.K. Nachimuthu, R.D. Jeffery, M. Martyniuk, R.C. Woodward, P.J. Metaxas, J.M. Dell and L. Faraone, "Investigation of cerium substituted europium iron garnets deposited by Biased Target Ion Beam Deposition", IEEE Trans. Mag., 50, 2201807 (2014).

(13) J. Sampaio, S. Lequeux, P.J. Metaxas, A. Chanthbouala, R. Matsumoto, K. Yakushiji, H. Kubota, A. Fukushima, S. Yuasa, K. Nishimura, Y. Nagamine, H. Maehara, K. Tsunekawa, V. Cros and J. Grollier, "Time-resolved observation of fast domain-walls driven by vertical spin currents in short tracks", Appl. Phys. Lett., 103, 242415 (2013).

(12) J. Ferré, P.J. Metaxas, A. Mougin, J.-P. Jamet, J. Gorchon and V. Jeudy, "Universal magnetic domain wall dynamics in the presence of weak disorder", C.R. Physique, 14, 651 (2013) [invited review].

(11) P.J. Metaxas, J. Sampaio, A. Chanthbouala, R. Matsumoto, A. Anane, A. Fert, K.A. Zvezdin, K. Yakushiji, H. Kubota, A. Fukushima, S. Yuasa, K. Nishimura, Y. Nagamine, H. Maehara, K. Tsunekawa, V. Cros and J. Grollier, "High domain wall velocities via spin transfer torque using vertical current injection", Sci. Rep., 3, 1829 (2013).

(10) P.J. Metaxas, P.J. Zermatten, R.L. Novak, S. Rohart, J.P. Jamet, R. Weil, J. Ferre, A. Mougin, R.L. Stamps, G. Gaudin, V. Baltz and B. Rodmacq, "Spatially periodic domain wall pinning potentials: asymmetric pinning and dipolar biasing", J. Appl. Phys., 113, 073906 (2013).

(9) P.J. Metaxas, R.L. Stamps, J.P. Jamet, J. Ferre, V. Baltz and B. Rodmacq, "Expansion and relaxation of magnetic mirror domains in a Pt/Co/Pt/Co/Pt multilayer with antiferromagnetic interlayer coupling", J. Phys.: Condens. Matter, 24, 024212 (2012) [invited article].

(8) C. Visani, P.J. Metaxas, A. Collaudin, B. Calvet, R. Bernard, J. Briatico, C. Deranlot, K. Bouzehouane and J.E. Villegas, "Hysteretic magnetic pinning and reversible resistance switching in high-temperature superconductor/ferromagnet multilayers", Phys. Rev. B, 84, 054539 (2011).

(7) P. Politi, P.J. Metaxas, J.P. Jamet, R.L. Stamps and J. Ferre, "Model of bound interface dynamics for coupled magnetic domain walls", Phys. Rev. B, 84, 054431 (2011).

(6) P.J. Metaxas, A. Anane, V. Cros, J. Grollier, C. Deranlot, Y. Lemaitre, S. Xavier, C. Ulysse, G. Faini, F. Petroff and A. Fert, "Current-induced resonant depinning of a transverse magnetic domain wall in a spin valve nanostrip", Appl. Phys. Lett., 97, 182506 (2010).

(5) P.J. Metaxas, R.L. Stamps, J.P. Jamet, J. Ferré, V. Baltz, B. Rodmacq and P. Politi, "Dynamic Binding of Driven Interfaces in Coupled Ultrathin Ferromagnetic Layers", Phys. Rev. Lett., 104, 237206 (2010).

(4) P.J. Metaxas, P.J. Zermatten, J.P. Jamet, J. Ferré, G. Gaudin, B. Rodmacq, A. Schuhl and R.L. Stamps, "Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array", Appl. Phys. Lett., 94, 132504 (2009).

(3) P.J. Metaxas, J.P. Jamet, J. Ferré, B. Rodmacq, B. Dieny and R.L. Stamps, "Magnetic domain wall creep in the presence of an effective interlayer coupling field", J. Magn. Magn. Mater., 320, 2571 (2008).

(2) P.J. Metaxas, J.P. Jamet, A. Mougin, M. Cormier, J. Ferré, V. Baltz, B. Rodmacq, B. Dieny, and R. L. Stamps, "Creep and flow regimes of magnetic domain-wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy", Phys. Rev. Lett., 99, 217208 (2007).

(1) A. Mougin, M. Cormier, J.P. Adam, P.J. Metaxas and J. Ferré, "Domain wall mobility, stability and Walker breakdown in magnetic nanowires", Europhys. Lett., 78, 57007 (2007).

Invited book chapters:

(2) J. Sampaio, J. Grollier and P.J. Metaxas, "Domain Wall Motion in Nanostructures", Magnetism of Surfaces, Interfaces, and Nanoscale Materials (1st Edition), Elsevier (2015).

(1) P.J. Metaxas, "Creep and Flow Dynamics of Magnetic Domain Walls: Weak Disorder, Wall Binding, and Periodic Pinning", Solid State Physics (Volume 62), Academic Press (2011).

Peer-reviewed conference proceedings:

(2) C. Lueng, P.J. Metaxas and M. Kostylev, "Sensitivity Enhancement of Pd/Co Bi-layer Film for Hydrogen Gas Sensing using Perpendicular-to-Plane Ferromagnetic Resonance Configuration", http://arxiv.org/abs/1601.03500, to appear in IEEE Transactions on Magnetics (2016).


(1) C. Lueng, P.J. Metaxas and M. Kostylev, "Pd/Co bi-layer films for microwave-frequency hydrogen gas sensing applications", 2014 Conference on Optoelectronic and Microelectronic Materials & Devices (COMMAD), (2014).
Funding received
'Nano-scale devices for frequency-based magnetic biosensing', Asian Office of Aerospace Research and Development (2015)
ECR Fellowship Support Grant (2014)
'Magnonic Nanostructures for Bio-label Detection' UWA Research Collaboration Award (2014)
'Modelling superparamagnetic particles for biomedical applications', UWA Research Collaboration Award (2013)
'Magnetic Biosensing: Developing High Frequency Spintronic Sensors for Magnetic Label Detection', ARC Discovery Early Career Researcher Award (2012-2014)
'Nano-scale Traps for Magnetic Domain Walls' UWA Research Development Award Scheme (2012-2013)
Languages
English and French
Memberships
Institute of Electrical and Electronics Engineers (IEEE, Senior Member)
Honours and awards
2015 UWA Vice-Chancellor’s Early Career Investigators Award
2015 UWA Faculty of Science Rising Star Award (3rd place)
2011 Australian Nanotechnology Network Overseas Travel Fellowship
2011 Australian Research Council Discovery Early Career Researcher Award
2011 American Australian Association Pratt Fellowship
2009 UWA Whitfield Fellowship
2005 Marie Curie Early Stage Research Training Fellowship
Previous positions
Visiting Scientist, Georgia Institute of Technology, Atlanta, USA (2012)
Research scientist, Unité Mixte de Physique CNRS/Thales, Palaiseau, France (2011)
Post-doctoral researcher, Unité Mixte de Physique CNRS/Thales, Palaiseau, France (2009-2010)
Whitfield Fellow, University of Western Australia (2009)
Teaching
PHYS3012 Frontiers in Modern Physics
Magnetic and Ferroic Materials (part of the "Advanced Topics in Solid State Physics" module)
Useful links
Research group website: http://www.physics.uwa.edu.au/research/spindynamics

Please feel free to contact me if you are interested in discussing potential Masters or vacation/undergraduate research projects.
New and noteworthy
2016 Honours and Masters project proposals have been released (please see link on our group website, above)

My research has been featured on UWA Science's new Global Science website:

http://www.uwascienceglobal.com/projects/magnetic-nanoparticle-detectors-medical-diagnostics/
Research profile
Research profile and publications
 

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Last updated:
Tuesday, 3 November, 2015 2:39 PM

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