Background and activities

I am currently working with Prof Dennis Meier to investigating next-generation 2D materials for future nanotechnology. My research interests are in any ferroic system and their domain walls, specifically how to manipulate [1] and control the domain walls.

 

Previous:
Postdoc with Prof Michael Carpenter, Department of Earth Science, University of Cambridge. Measuring elastic and anelastic to investigate the role of elastic strain and microstructure dynamics in controlling the structural evolution, as a function of temperature and magnetic field. We investigated skyrmion system Cu2OSeO3 [2], double perovskite solar cells [3] [4], and high temperature superconductors, in submission.

PhD with Prof Marty Gregg and Dr Alina Schilling, Physics department, Queen’s University Belfast.

PFM and FIB lead investigation the first single phase multiferroic material with room temperature magnetoelectric coupling [5] [6] [7]. With a focus on the nature of the magnetoelectric coupling [8] [9].

Masters Project with Prof. J. F. Scott, Physics department, University of Cambridge [10].

 

Full list of publications can be found on my google scholar page:
https://scholar.google.com/citations?hl=en&user=5R3gnggAAAAJ&view_op=list_works

 

[1] T. S. Holstad, et al., Electronic bulk and domain wall properties in B-site doped hexagonal ErMnO 3. https://arxiv.org/abs/1710.05557

[2] D. M. Evans, et al., “Defect dynamics and strain coupling to magnetization in the cubic helimagnet Cu2OSeO3”, Phys. Rev. B 95, 094426 (2017)

[3] F. Wei, et al., “Synthesis and Properties of a Lead-Free Hybrid Double Perovskite: (CH3NH3)2AgBiBr6”. Chem. Mater., 29 (3), (2017)

[4] F. Wei, et al., “The synthesis, structure and electronic properties of a lead-free hybrid inorganic–organic double perovskite (MA)2KBiCl6 (MA = methylammonium)”. Mater. Horiz., 3, 328-332 (2016)

[5] D. M. Evans, et al., “Magnetic switching of ferroelectric domains at room temperature in multiferroic PZTFT”. Nat. comms. 1534 (2013)

[6] J. Schiemer, et al., “Studies of the Room‐Temperature Multiferroic Pb (Fe0. 5Ta0. 5) 0.4 (Zr0. 53Ti0. 47) 0.6 O3: Resonant Ultrasound Spectroscopy, Dielectric, and Magnetic Phenomena”. Adv. Funct. Mater. 24, 2993–3002 (2014)

[7] US patent, Micro and nanoscale magnetoelectric multiferroic lead iron tantalate-lead zirconate titanate. US 9299485 B1

[8] D. M. Evans, et al., “The Nature of Magnetoelectric Coupling in Pb(Zr,Ti)O3–Pb(Fe,Ta)O3”. Adv. Mater. 27, 6068–6073 (2015)

[9] D. M. Evans, et al., “Switching ferroelectric domain configurations using both electric and magnetic fields in Pb (Zr, Ti) O3–Pb (Fe, Ta) O3 single-crystal lamellae”. Phil. Trans. R. Soc. A 372: 20120450 (2014)

[10] S. P. P. Jones, et al., “Phase diagram and phase transitions in ferroelectric tris-sarcosine calcium chloride and its brominated isomorphs”. Phys. Rev. B 83, 094102 (2011)

Scientific, academic and artistic work

Journal publications