Light-induced magnetization reversal of high-anisotropy TbCo alloy films

By Sabine Alebrand, M. Gottwald, M. Hehn, D. Steil, M. Cinchetti, D. Lacour, E. Fullerton, M. Aeschlimann, S. Mangin. 2012

186 citations recorded by the source corpus.

Magnetization reversal using circularly polarized light provides a way to control magnetization without any external magnetic field and has the potential to revolutionize magnetic data storage. However, in order to reach ultra-high density data storage, high anisotropy media providing thermal stability are needed. Here, we evidence all-optical magnetization switching for different TbxCo1−x ferrimagnetic alloy compositions using fs- and ps-laser pulses and demonstrate all-optical switching for films with anisotropy fields reaching 6 T corresponding to anisotropy constants of 3 × 106 ergs/cm3. Optical magnetization switching is observed only for alloy compositions where the compensation temperature can be reached through sample heating.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/33d28347bd0dd90605725812a6a54f074458c4ee

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. C. Lambert
2. M. Hehn
3. Stéphane Mangin
4. G. Malinowski
5. Salah El Hadri
6. F. Montaigne
7. M. S. E. Hadri

Citations in the corpus

• Two types of all-optical magnetization switching mechanisms using femtosecond laser pulses (2016, background): “Moreover, the multiple-shot switching in such ferrimagnetic films was obtained with a swept beam and was helicitydependent from the switching threshold to the damage fluence threshold [18, 19].”