Asset Details
Do you wish to reserve the book?
Fast domain wall motion in the vicinity of the angular momentum compensation temperature of ferrimagnets
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Fast domain wall motion in the vicinity of the angular momentum compensation temperature of ferrimagnets
Do you wish to request the book?
Fast domain wall motion in the vicinity of the angular momentum compensation temperature of ferrimagnets
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Fast domain wall motion in the vicinity of the angular momentum compensation temperature of ferrimagnets
2017
Overview
Fast field-driven antiferromagnetic spin dynamics is realized in ferrimagnetic Gd
23
Fe
67.4
Co
9.6
thin films at the angular momentum compensation point. In particular, at this point, the field-driven domain wall mobility is found to be enhanced.
Antiferromagnetic spintronics is an emerging research field which aims to utilize antiferromagnets as core elements in spintronic devices
1
,
2
. A central motivation towards this direction is that antiferromagnetic spin dynamics is expected to be much faster than its ferromagnetic counterpart
3
. Recent theories indeed predicted faster dynamics of antiferromagnetic domain walls (DWs) than ferromagnetic DWs
4
,
5
,
6
. However, experimental investigations of antiferromagnetic spin dynamics have remained unexplored, mainly because of the magnetic field immunity of antiferromagnets
7
. Here we show that fast field-driven antiferromagnetic spin dynamics is realized in ferrimagnets at the angular momentum compensation point
T
A
. Using rare earth–3d-transition metal ferrimagnetic compounds where net magnetic moment is nonzero at
T
A
, the field-driven DW mobility is remarkably enhanced up to 20 km s
−1
T
−1
. The collective coordinate approach generalized for ferrimagnets
8
and atomistic spin model simulations
6
,
9
show that this remarkable enhancement is a consequence of antiferromagnetic spin dynamics at
T
A
. Our finding allows us to investigate the physics of antiferromagnetic spin dynamics and highlights the importance of tuning of the angular momentum compensation point of ferrimagnets, which could be a key towards ferrimagnetic spintronics.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
