Magnetic-Pole Flip by Millimeter Wave

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 32(2020), 48 vom: 07. Dez., Seite e2004897
1. Verfasser:	Ohkoshi, Shin-Ichi (VerfasserIn)
Weitere Verfasser:	Yoshikiyo, Marie, Imoto, Kenta, Nakagawa, Kosuke, Namai, Asuka, Tokoro, Hiroko, Yahagi, Yuji, Takeuchi, Kyohei, Jia, Fangda, Miyashita, Seiji, Nakajima, Makoto, Qiu, Hongsong, Kato, Kosaku, Yamaoka, Takehiro, Shirata, Masashi, Naoi, Kenji, Yagishita, Koichi, Doshita, Hiroaki
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2020
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article epsilon iron oxide magnetic recording magnetization reversal millimeter waves nanoparticles

Beschreibung
Zusammenfassung:	© 2020 The Authors. Published by Wiley-VCH GmbH. In the era of Big Data and the Internet of Things, data archiving is a key technology. From this viewpoint, magnetic recordings are drawing attention because they guarantee long-term data storage. To archive an enormous amount of data, further increase of the recording density is necessary. Herein a new magnetic recording methodology, "focused-millimeter-wave-assisted magnetic recording (F-MIMR)," is proposed. To test this methodology, magnetic films based on epsilon iron oxide nanoparticles are prepared and a focused-millimeter-wave generator is constructed using terahertz (THz) light. Irradiating the focused millimeter wave to epsilon iron oxide instantly switches its magnetic pole direction. The spin dynamics of F-MIMR are also calculated using the stochastic Landau-Lifshitz-Gilbert model considering all of the spins in an epsilon iron oxide nanoparticle. In F-MIMR, the heat-up effect of the recording media is expected to be suppressed. Thus, F-MIMR can be applied to high-density magnetic recordings
Beschreibung:	Date Revised 01.12.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202004897