283 citations · 1k across the 28 of their papers we have counts for
19 papers · 1 filter
Magnetism of noncolinear amorphous DyCo3 and TbCo3 thin films
Zexiang Hu, Ajay Jha, Katarzyna Siewierska +4
The magnetization of amorphous DyCo3 and TbCo3 is studied by magnetometry, anomalous Hall effect and magneto-optic Kerr effect to understand the temperature-dependent magnetic stru…
Magnetism, transport and atomic structure of amorphous binary YxCo1-x alloys
Zexiang Hu, Jean Besbas, Katarzyna Siewierska +3
Sputtered thin films of binary YxCo1-x with 0 < x < 0.54 and thickness 15 nm are investigated to help understand the ferromagnetism of cobalt in amorphous rare-earth cobalt alloys.…
Quasi-static magnetization dynamics in a compensated ferrimagnetic half-metal -- MnRuGa
Ajay Jha, Simon Lenne, Gwenael Atcheson +3
Exploring anisotropy and diverse magnetization dynamics in specimens with vanishing magnetic moments presents a significant challenge using traditional magnetometry, as the low res…
Au4Mn, a localized ferromagnet with strong spin-orbit coupling, long-range ferromagnetic exchange and high Curie temperature
Yangkun He, Zsolt Gercsi, Rui Zhang +8
Metallic Mn-based alloys with a nearest-neighbor Mn-Mn distance greater than 0.4 nm exhibit large, well-localized magnetic moments. Here we investigate the magnetism of tetragonal…
Single-pulse all-optical switching in amorphous DyCo and TbCo
Zexiang Hu, Jean Besbas, Ross Smith +5
Repeated uniform switching of the magnetization of thin films of ferrimagnetic amorphous Gd(FeCo) in response to single fast laser pulses is well established. Here we…
Spin polarization and magnetotransport properties of systematically disordered thin films
Kiril Borisov, Jonathan Ehrler, Ciaran Fowley +8
We investigate the evolution of spin polarization, spontaneous Hall angle (SHA), saturation magnetization and Curie temperature of -ordered FeAl thin films under…
Stability of Mn2RuxGa-based Multilayer Stacks
Gwenael Atcheson, Katarzyna Siewierska, J. M. D. Coey +2
Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers…
Magnetic reversal and pinning in a perpendicular zero moment half-metal
Niclas Teichert, Gwenael Atcheson, Katarzyna Siewierska +6
Compensated ferrimagnets are promising materials for fast spintronic applications based on domain wall motion as they combine the favourable properties of ferromagnets and antiferr…
Ultra-fast Double Pulse All-Optical Re-switching of a Ferrimagnet
C. Banerjee, K. Rode, G. Atcheson +4
All-optical re-switching has been investigated in the half-metallic Heusler ferrimagnet Mn2Ru0.9Ga, where Mn atoms occupy two inequivalent sites in the XA-type structure. The effec…
Magnetic order and magneto-transport in half-metallic ferrimagnetic MnRuGa thin films
K. E. Siewierska, G. Atcheson, A. Jha +8
The ruthenium content of half-metallic MnRuGa thin films, with a biaxially-strained inverse Heusler structure, controls the ferrimagnetism that determines their magnetic an…
New highly-anisotropic Rh-based Heusler compound for magnetic recording
Yangkun He, Gerhard H. Fecher, Chenguang Fu +18
The development of high-density magnetic recording media is limited by the superparamagnetism in very small ferromagnetic crystals. Hard magnetic materials with strong perpendicula…
Sub-picosecond exchange-relaxation in the compensated ferrimagnet MnRuGa
G. Bonfiglio, K. Rode, G. Y. P. Atcheson +5
We study the demagnetization dynamics of the fully compensated half-metallic ferrimagnet MnRuGa. While the two antiferromagnetically coupled sublattices are both composed o…
Magnetization dynamics of the compensated ferrimagnet
G. Bonfiglio, K. Rode, K. Siewerska +7
Here we study both static and time-resolved dynamic magnetic properties of the compensated ferrimagnet from room temperature down to 10K, thus crossing the magnetic compensation te…
Single pulse all-optical toggle switching of magnetization without Gd: The example of Mn2RuxGa
C. Banerjee, N. Teichert, K. Siewierska +6
Energy-efficient control of magnetization without the help of a magnetic field is a key goal of spintronics. Purely heat-induced single-pulse all-optical toggle switching has been…
Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully-compensated half-metallic Mn2RuxGa thin films
Ciarán Fowley, Karsten Rode, Yong-Chang Lau +12
Magnetotransport is investigated in thin films of the half-metallic ferrimagnet MnRuGa in pulsed magnetic fields of up to 58 T. A non-vanishing Hall signal is observed over…
Structure, site-specific magnetism and magneto-transport properties of epitaxial D0 MnFeGa thin films
Davide Betto, Yong-Chang Lau, Kiril Borisov +5
Ferrimagnetic MnFeGa thin films have been characterised by X-ray diffraction, SQUID magnetometry, X-ray absorption spectroscopy, X-ray magnetic ci…
Surface magnetism of strontium titanate
J. M. D. Coey, M Venkatesan, P Stamenov
SrTiO3 plays a central role in oxide electronics. It is the substrate of choice for functional oxide heterostructures based on perovskite-structure thin-film stacks, and its surfac…
High spin polarization in epitaxial films of ferrimagnetic Mn3Ga
Huseyin Kurt, Karsten Rode, Munuswamy Venkatesan +2
Ferrimagnetic Mn3Ga exhibits a unique combination of low saturation magnetization (Ms = 0.11 MA m-1) and high perpendicular anisotropy with a uniaxial anisotropy constant of Ku = 0…
Ferromagnetism in defect-ridden oxides and related materials
J. M. D. Coey, P. Stamenov, R. D. Gunning +2
The existence of high-temperature ferromagnetism in thin films and nanoparticles of oxides containing small quantities of magnetic dopants remains controversial. Some regard these…