Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Paterson, Gary W."'
Publikováno v:
Adv. Theory Simul. 4, 2100109 (2021)
We investigate a set of topological arrangements of individual ferromagnetic islands in ideal and disordered artificial spin ice (ASI) arrays in order to evaluate how aspects of their field-driven reversal are affected by the model used. The set cont
Externí odkaz:
http://arxiv.org/abs/2103.14643
Autor:
McCartan, Shane J., Calisir, Ilkan, Paterson, Gary W., Webster, Robert W. H., Macgregor, Thomas A., Hall, David A., MacLaren, Ian
Fast-cooling after sintering or annealing of BiFeO3-BaTiO3 mixed oxide ceramics yields core-shell structures that give excellent functional properties, but their precise phase assemblage and nanostructure remains an open question. By comparing conven
Externí odkaz:
http://arxiv.org/abs/2010.10975
Autor:
Paterson, Gary W., Webster, Robert W. H., Ross, Andrew, Paton, Kirsty A., Macgregor, Thomas A., McGrouther, Damien, MacLaren, Ian, Nord, Magnus
Publikováno v:
Microsc. Microanal. 26, 944 (2020)
Fast pixelated detectors incorporating direct electron detection (DED) technology are increasingly being regarded as universal detectors for scanning transmission electron microscopy (STEM), capable of imaging under multiple modes of operation. Howev
Externí odkaz:
http://arxiv.org/abs/2004.02777
Autor:
Rendell-Bhatti, Frederic, Lamb, Raymond J., van der Jagt, Johannes W., Paterson, Gary W., Swagten, Henk J. M., McGrouther, Damien
Magnetic skyrmions are topological magnetic spin structures exhibiting particle-like behaviour. They are of strong interest from a fundamental viewpoint and for application, where they have potential to act as information carriers in future low-power
Externí odkaz:
http://arxiv.org/abs/1911.10094
Autor:
Nord, Magnus, Webster, Robert W. H., Paton, Kirsty A., McVitie, Stephen, McGrouther, Damien, MacLaren, Ian, Paterson, Gary W.
Publikováno v:
Microsc. Microanal. 26, 653 (2020)
The use of fast pixelated detectors and direct electron detection technology is revolutionising many aspects of scanning transmission electron microscopy (STEM). The widespread adoption of these new technologies is impeded by the technical challenges
Externí odkaz:
http://arxiv.org/abs/1911.11560
Autor:
Paterson, Gary W., Macauley, Gavin M., Li, Yue, Macêdo, Rair, Ferguson, Ciaran, Morley, Sophie A., Rosamond, Mark C., Linfield, Edmund H., Marrows, Christopher H., Stamps, Robert L., McVitie, Stephen
Publikováno v:
Phys. Rev. B 100, 174410 (2019)
Rotating all islands in square artificial spin ice (ASI) uniformly about their centres gives rise to the recently reported pinwheel ASI. At angles around 45$^\mathrm{o}$, the antiferromagnetic ordering changes to ferromagnetic and the magnetic config
Externí odkaz:
http://arxiv.org/abs/1908.10626
Autor:
Macauley, Gavin M., Paterson, Gary W., Li, Yue, Macêdo, Rair, McVitie, Stephen, Stamps, Robert L.
Publikováno v:
Phys. Rev. B 101, 144403 (2020)
Artificial spin ices are arrays of correlated nano-scale magnetic islands that prove an excellent playground in which to study the role of topology in critical phenomena. Here, we investigate a continuum of spin ice geometries, parameterised by rotat
Externí odkaz:
http://arxiv.org/abs/1908.08903
Autor:
Paterson, Gary W., Lamb, Raymond J., Ballabriga, Rafael, Maneuski, Dima, O'Shea, Val, McGrouther, Damien
Publikováno v:
Ultramicroscopy 210, 112917 (2020)
Detector developments are currently enabling new capabilities in the field of transmission electron microscopy (TEM). We have investigated the limits of a hybrid pixel detector, Medipix3, to record dynamic, time varying, electron signals. Operating w
Externí odkaz:
http://arxiv.org/abs/1905.11884
Autor:
Paterson, Gary W., Koyama, Tsukasa, Shinozaki, Misako, Masaki, Yusuke, Goncalves, Francisco. J. T., Shimamoto, Yusuke, Sogo, Tadayuki, Nord, Magnus, Kousaka, Yusuke, Kato, Yusuke, McVitie, Stephen, Togawa, Yoshihiko
Publikováno v:
Phys. Rev. B 99, 224429 (2019)
Competing magnetic anisotropies in chiral crystals with Dzyaloshinskii Moriya exchange interactions can give rise to non-trivial chiral topological magnetisation configurations with new and interesting properties. One such configuration is the magnet
Externí odkaz:
http://arxiv.org/abs/1903.09519
Autor:
Li, Yue, Paterson, Gary W., Macauley, Gavin M., Nascimento, Fabio S., Ferguson, Ciaran, Morley, Sophie A., Rosamond, Mark C., MacLaren, Donald A., Macêdo, Rair, Marrows, Christopher H., McVitie, Stephen, Stamps, Robert L.
For over ten years, arrays of interacting single-domain nanomagnets, referred to as artificial spin ices, have been engineered with the aim to study frustration in model spin systems. Here, we use Fresnel imaging to study the reversal process in 'pin
Externí odkaz:
http://arxiv.org/abs/1808.10490