HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >

Structural and magnetic properties of Ni78Fe22 thin films sandwiched between low-softening-point glasses and application in spin devices

Creative Commons License

Files in This Item:
ASS-2016-Kaiju.pdf1.26 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/72258

Title: Structural and magnetic properties of Ni78Fe22 thin films sandwiched between low-softening-point glasses and application in spin devices
Authors: Misawa, Takahiro Browse this author
Mori, Sumito Browse this author
Komine, Takashi Browse this author →KAKEN DB
Fujioka, Masaya Browse this author
Nishii, Junji Browse this author →KAKEN DB
Kaiju, Hideo Browse this author →KAKEN DB
Keywords: Magnetic thin films
Thermal pressing
Coercivity
Spin filter
Micromagnetic simulation
Issue Date: 30-Dec-2016
Publisher: Elsevier
Journal Title: Applied surface science
Volume: 390
Start Page: 666
End Page: 674
Publisher DOI: 10.1016/j.apsusc.2016.08.100
Abstract: We investigate the structural and magnetic properties of Ni78Fe22 thin films sandwiched between low softening-point (LSP) glasses, which can be used in spin quantum cross (SQC) devices utilizing stray magnetic fields generated from magnetic thin-film edges. We also calculate the stray magnetic field generated between the two edges of Ni78Fe22 thin-film electrodes in SQC devices and discuss the applicability to spin-filter devices. Using the established fabrication technique, we successfully demonstrate the formation of LSP-glass/Ni78Fe22/LSP-glass structures with smooth and clear interfaces. The coercivity of the Ni78Fe22 thin films is enhanced from 0.9 to 103 Oe by increasing the applied pressure from 0 to 1.0 MPa in the thermal pressing process. According to the random anisotropy model, the enhancement of the coercivity is attributed to the increase in the crystal grain size. The stray magnetic field is also uniformly generated from the Ni78Fe22 thin-film edge in the direction perpendicular to the cross section of the LSP-glass/Ni78Fe22/LSP-glass structures. Theoretical calculation reveals that a high stray field of approximately 5 kOe is generated when the distance between two edges of the Ni78Fe22 thin-film electrodes is less than 5 nm and the thickness of Ni78Fe22 is greater than 20 nm. These experimental and calculation results indicate that Ni78Fe22 thin films sandwiched between LSP glasses are useful as electrodes for SQC devices, serving as spin-filter devices.
Rights: (C) 2016 Elsevier B.V. All rights reserved.
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/72258
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 海住 英生

Export metadata:

OAI-PMH ( junii2 , jpcoar )


 

Feedback - Hokkaido University