Zobrazeno 1 - 10
of 229
pro vyhledávání: '"Chantrell, Roy W."'
Autor:
Hamara, Dominik, Strungaru, Mara, Massey, Jamie, Remy, Quentin, Antonio, Guillermo Nava, Santos, Obed Alves, Hehn, Michel, Evans, Richard F. L., Chantrell, Roy W., Mangin, Stéphane, Marrows, Christopher H., Barker, Joseph, Ciccarelli, Chiara
An antiferromagnet emits spin currents when time-reversal symmetry is broken. This is typically achieved by applying an external magnetic field below and above the spin-flop transition or by optical pumping. In this work we apply optical pump-THz emi
Externí odkaz:
http://arxiv.org/abs/2404.07841
Autor:
Ruta, Sergiu, Fernández-Afonso, Yilian, Rannala, Samuel E., Morales, M. Puerto, Veintemillas-Verdaguer, Sabino, Jones, Carlton, Gutiérre, Lucía, Chantrell, Roy W, Serantes, David
Accurate knowledge of the heating performance of magnetic nanoparticles (MNPs) under AC fields is critical for the development of hyperthermia-mediated applications. Usually reported in terms of the specific loss power (SLP) obtained from the tempera
Externí odkaz:
http://arxiv.org/abs/2307.11521
Autor:
Guo, Zongxia, Wang, Junlin, Malinowski, Gregory, Zhang, Boyu, Zhang, Wei, Wang, Hangtian, Liu, Chen, Peng, Yi, Vallobra, Pierre, Xu, Yongbing, Jenkins, Sarah, Chantrell, Roy W., Evans, Richard F. L., Mangin, Stéphane, Zhao, Weisheng, Hehn, Michel
Ultrafast manipulation of magnetic order has challenged our understanding the fundamental and dynamic properties of magnetic materials. So far single shot magnetic switching has been limited to ferrimagnetic alloys and multilayers. In ferromagnetic (
Externí odkaz:
http://arxiv.org/abs/2302.04510
Autor:
Collings, Jack B., Rama-Eiroa, Ricardo, Otxoa, Rubén M., Evans, Richard F. L., Chantrell, Roy W.
We present a general approach to the derivation of the effective anisotropy field which determines the dynamical behaviour of magnetic spins according to the Landau-Lifshitz-Gilbert equation. The approach is based on the gradient in spherical polar c
Externí odkaz:
http://arxiv.org/abs/2210.10916
Autor:
Strungaru, Mara, Ellis, Matthew O A, Ruta, Sergiu, Evans, Richard F L, Chantrell, Roy W, Chubykalo-Fesenko, Oksana
Advanced magnetic recording paradigms typically use large temperature changes to drive switching which is detrimental to device longevity, hence finding non-thermal routes is crucial for future applications. By employing atomistic spin-lattice dynami
Externí odkaz:
http://arxiv.org/abs/2209.04312
We employ an atomistic model using a nearest-neighbor Heisenberg Hamiltonian exchange to study computationally the dependence of the Curie temperature of L10-FePt on finite-size and surface effects in Heat-assisted Magnetic Recording (HAMR) media. We
Externí odkaz:
http://arxiv.org/abs/2207.11831
Autor:
Rannala, Samuel Ewan, Meo, Andrea, Ruta, Sergiu, Pantasri, Wasan, Chantrell, Roy W., Chureemart, Phanwadee, Chureemart, Jessada
Micromagnetic modelling provides the ability to simulate large magnetic systems accurately without the computational cost limitation imposed by atomistic modelling. Through micromagnetic modelling it is possible to simulate systems consisting of thou
Externí odkaz:
http://arxiv.org/abs/2205.05263
Publikováno v:
Phys. Rev. B 103, 104419 (2021)
Anti-ferromagnetic materials have the possibility to offer ultra fast, high data density spintronic devices. A significant challenge is the reliable detection of the state of the antiferromagnet, which can be achieved using exchange bias. Here we dev
Externí odkaz:
http://arxiv.org/abs/2101.01474
Autor:
Olleros-Rodríguez, Pablo, Strungaru, Mara S., Ruta, Sergiu I., Gavriloaea, Paul I., Perna, Paolo, Chantrell, Roy W., Chubykalo-Fesenko, Oksana
We explore the helicity-independent light-induced nucleation of skyrmion lattices in ferromagnetic cobalt-based trilayers with perpendicular magnetic anisotropy. Using Atomistic Spin Dynamics simulations, we show that a high temperature excitation fo
Externí odkaz:
http://arxiv.org/abs/2011.06093
Publikováno v:
Phys. Rev. B 103, 014424 (2021)
Antiferromagnetic spintronic devices have the potential to outperform conventional ferromagnetic devices due to their ultrafast dynamics and high data density. A challenge in designing these devices is the control and detection of the orientation of
Externí odkaz:
http://arxiv.org/abs/2010.08779