Projects per year
Personal profile
Research Interests
Marty Gregg leads the nanoscale ferroelectric activity in Queen's University Belfast. In the past, he had research activities on ferroelectric thin films and superlattices grown by Pulsed Laser Deposition (1997-2005), and in the characterisation and understanding of well-controlled nanoscale ferroelectric entities cut from high purity bulk crystals using Focused Ion Beam milling (2004-2014). Most recently, he has been directing particular attention towards understanding and controlling domain wall properties, both in bulk single crystals and in single crystal films and lamellae. This is rapidly becoming an area of great excitement, as it is becoming clear that ferroelectric domain walls are functional materials in their own right, with properties different from the domains that they surround.
Microscopy is a critical component in nanoscale ferroelectric research and Marty has been heavily involved in electron, ion and scanning probe techniques for most of his career. He has rejuvenated the transmission electron microscopy (TEM) and focused ion beam (FIB) microscopy capability of the university twice: first in 2000 through £1.5M of EPSRC funding for a Tecnai F20 TEM and FEI FIB and again in 2017 through £1.8M of EPSRC funding for a FEI Talos TEM and two Tescan FIBs. He has twice been the Director of the Electron Microscopy Facility (2000-2010 and 2015-2020).
Marty was the Director of Research for the Centre for Nanostructured Media (CNM) for over five years (2015-2020) and has most recently been appointed as the Director for Research for the entire School of Mathematics and Physics.
He is a Fellow of the Institute of Physics and was elected to the Royal Irish Academy in 2018.
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Projects
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R6433CMM: Electric field driven magnetization switching in multiferroic nanoislands
25/02/2014 → …
Project: Research
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Research Output
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Order-disorder, ferroelasticity and mobility of domain walls in multiferroic Cu-Cl Boracite
Fernandez-Posada, C. M., Cochard, C., Gregg, J. M., Whatmore, R. W. & Carpenter, M. A., 2021, In : Journal of Physics: Condensed Matter. 33, 9, 11 p., 095402.Research output: Contribution to journal › Article › peer-review
Open AccessFile20 Downloads (Pure) -
Anisotropic, meandering domain microstructure in the improper ferroelectric CsNbW2O9
McCartan, S., Turner, P., McNulty, J., Maguire, J., McCluskey, C., Morrison, F., Gregg, M. & MacLaren, I., 19 Oct 2020, In : APL Materials.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Customizing the Reduction of Individual Graphene Oxide Flakes for Precise Work Function Tuning with meV Precision
Huang, Y., Ma, D., Turner, P., Donnelly, G., Katzen, J., Hendren, W., Gregg, M., Bowman, R., Zhang, L., Zhang, G. & Huang, F., 01 Jun 2020, In : Nanoscale Advances.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Domain-wall engineering and topological defects in ferroelectric and ferroelastic materials
Nataf, G. F., Guennou, M., Gregg, J. M., Meier, D., Hlinka, J., Salje, E. K. H. & Kreisel, J., 01 Nov 2020, In : Nature Reviews | Physics. 2, p. 634–648Research output: Contribution to journal › Article › peer-review
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Elastic distortion determining conduction in BiFeO3 phase boundaries
Holsgrove, K. M., Duchamp, M., Moreno, M. S., Bernier, N., Naden, A. B., Guy, J. G. M., Browne, N., Gupta, A., Gregg, M., Kumar, A. & Arredondo-Arechavala, M., 27 Jul 2020, In : RSC Advances. 10, p. 27954-27960 7 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile
Prizes
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Elected Member of the Royal Irish Academy
Gregg, Marty (Recipient), 16 Mar 2018
Prize: Election to learned society
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Fellow of the Institute of Physics
Gregg, Marty (Recipient), 2007
Prize: Fellowship awarded competitively
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International Award of Ferroelectric Materials and Their Applications (formerly the Ikeda Prize)
Gregg, Marty (Recipient), 23 May 2012
Prize: Prize (including medals and awards)
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Activities
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Invited Talk at CMD2020 - given online (recorded video)
Marty Gregg (Invited speaker)
31 Aug 2020 → 04 Sep 2020Activity: Talk or presentation types › Invited or keynote talk at national or international conference
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Invited Talk at ISAF 2020
Marty Gregg (Invited speaker)
19 Jul 2020 → 23 Jul 2020Activity: Talk or presentation types › Invited or keynote talk at national or international conference
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Invited Talk at QUOROM-2
Marty Gregg (Invited speaker)
12 Nov 2020Activity: Talk or presentation types › Invited talk
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Invited Talk at CMD2020GEFES
Marty Gregg (Invited speaker)
04 Sep 2020Activity: Talk or presentation types › Invited or keynote talk at national or international conference
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Invited Talk at IoP Dielectrics 2019
Marty Gregg (Invited speaker)
12 Apr 2019Activity: Talk or presentation types › Invited talk
Press / Media
Impact
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Failure in Multilayer Ceramic Capacitors (MLCCs) for AVX Ltd
Robert Bowman (Participant), Marty Gregg (Participant), Mohamed Saad (Participant), Li-Wu Chang (Participant), Mark McMillen (Participant) & Alina Schilling (Participant)
Impact: Economic Impact
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Seagate Technology R&D Investment Strategy
Alina Schilling (Participant), Robert Bowman (Participant), Marty Gregg (Participant), Paul Evans (Participant), Xinhua Zhu (Participant), John McPhillips (Participant), Robert Pollard (Participant), Ronald Atkinson (Participant), William Hendren (Participant), Gregory Wurtz (Participant), Wayne Dickson (Participant) & Anatoly Zayats (Participant)
Impact: Economic Impact