Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Gabriel D. Chaves-O'Flynn"'
Autor:
Gabriel D. Chaves-O’Flynn, D. L. Stein
Publikováno v:
AIP Advances, Vol 10, Iss 12, Pp 125322-125322-5 (2020)
We present overdamped micromagnetic simulations of the time evolution of magnetic droplet solitons which are formed in a thin film with perpendicular magnetic anisotropy by injecting a spin polarized current through a circular nanocontact. The overda
Externí odkaz:
https://doaj.org/article/54a7f4cb902a4cf29288d788612a468b
Autor:
Arno Ehresmann, Meike Reginka, Andrzej Maziewski, Gabriel D. Chaves-O'Flynn, Feliks Stobiecki, M. Schmidt, Łukasz Frąckowiak, Michał Matczak, Maciej Urbaniak, Piotr Kuświk
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Scientific Reports
Scientific Reports
Recent results showed that the ferrimagnetic compensation point and other characteristic features of Tb/Co ferrimagnetic multilayers can be tailored by He+ ion bombardment. With appropriate choices of the He+ ion dose, we prepared two types of lattic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::607bc3252bdb7bf37901ea9ea5dc3420
https://doaj.org/article/8a625d037810431d8345041c670469de
https://doaj.org/article/8a625d037810431d8345041c670469de
Autor:
Gabriel D. Chaves-O’Flynn, D.L. Stein
We review work by the authors on thermal activation in nanoscopic magnetic systems. These systems present unique difficulties in analyzing noise-induced escape over a barrier, including the presence of nonlocal interactions, nongradient terms in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c012275e02331c2cb9912b374a3065a0
http://arxiv.org/abs/2206.05826
http://arxiv.org/abs/2206.05826
Publikováno v:
Physical Review B. 101
We study noise-induced creation and annihilation of magnetic droplet solitons in experimental parameter regions in which they are linearly stable against drift. Exploiting the rotational symmetry of the problem, we transform to the reference frame ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b22c4d546a668c364b137e1553c30e77
https://doi.org/10.1103/physrevb.101.184421
https://doi.org/10.1103/physrevb.101.184421
Autor:
Maciej Urbaniak, Meike Reginka, Piotr Kuświk, Feliks Stobiecki, Arno Ehresmann, Michał Matczak, Andrzej Maziewski, Paweł Piotr Michałowski, Gabriel D. Chaves-O'Flynn, Łukasz Frąckowiak
Publikováno v:
Physical Review Letters. 124
We show that it is possible to engineer magnetic multidomain configurations without domain walls in a prototypical rare-earth-transition-metal ferrimagnet using keV He^{+} ion bombardment. We additionally show that these patterns display a particular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ef7eb2dda29edb7ef7516d2c043de3b
https://doi.org/10.1103/physrevlett.124.047203
https://doi.org/10.1103/physrevlett.124.047203
Autor:
Michał Matczak, Gabriel D. Chaves-O'Flynn, Maciej Urbaniak, Arno Ehresmann, Meike Reginka, Piotr Kuświk
Publikováno v:
Journal of Magnetism and Magnetic Materials. 519:167454
Magnetophoresis of micrometer sized superparamagnetic beads on sputtered Ir/Co(1.2 nm)/Ir multilayers with perpendicular magnetic anisotropy has been investigated. We show that domain walls motion in these layer systems is controlling the motion of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::764568342732e149d0564aeae4d6a124
https://doi.org/10.1016/j.jmmm.2020.167454
https://doi.org/10.1016/j.jmmm.2020.167454
Autor:
Piotr Kuświk, Feliks Stobiecki, Gabriel D. Chaves-O'Flynn, Łukasz Frąckowiak, Maciej Urbaniak
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
The ability to perform wide-range tuning of the magnetic field required to switch the magnetization of ferromagnetic layers with perpendicular magnetic anisotropy is of great importance for many applications. We show that, for (Au/Co)2(3) multilayers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a036bface598e1504bc3e6062dfcbf0
https://doi.org/10.1038/s41598-018-35042-x
https://doi.org/10.1038/s41598-018-35042-x
Publikováno v:
IEEE Transactions on Magnetics. 49:3125-3128
Numerical simulations were performed for thin ferromagnetic nanorings with non-negligible anisotropy. In a thin film, the cubic crystalline anisotropy reduces to a four-fold symmetric term favoring magnetization along the ±x and ±y directions. Our
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7d406e9fbf9f39f457134bb8632d572
https://doi.org/10.1109/tmag.2013.2242449
https://doi.org/10.1109/tmag.2013.2242449
Reduced model for precessional switching of thin-film nanomagnets under the influence of spin torque
Publikováno v:
Physical Review B. 94
We study the magnetization dynamics of thin-film magnetic elements with in-plane magnetization subject to a spin-current flowing perpendicular to the film plane. We derive a reduced partial differential equation for the in-plane magnetization angle i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46b110997d715722918949e721734bfe
https://doi.org/10.1103/physrevb.94.144425
https://doi.org/10.1103/physrevb.94.144425
Publikováno v:
Physical Review Applied. 4
The scaling of the energy barrier to magnetization reversal in thin-film nanomagnets with perpendicular magnetization as a function of their lateral size is of great interest and importance for high-density magnetic random access memory devices. Expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::385c7f03ac3ea45b268f423759e03959
https://doi.org/10.1103/physrevapplied.4.024010
https://doi.org/10.1103/physrevapplied.4.024010