# Substrate Materials dependence of Magnetic Domain Formation in CoFe Nanolayer Electrode Patterns

https://mdr.nims.go.jp/datasets/15137c2d-d3e3-479f-b3a5-bb54c3a815bf

## File

- [MNC2025_Abstract_H_Yonemoto_Hokkaido_Univ_submitted.pdf](https://mdr.nims.go.jp/filesets/6a00be96-a469-42c4-8cb8-fb5e3adff953/download) ([Detail](https://mdr.nims.go.jp/filesets/6a00be96-a469-42c4-8cb8-fb5e3adff953.md))

## Id

15137c2d-d3e3-479f-b3a5-bb54c3a815bf

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-20T23:53:11.239556Z

## Updated at

2025-11-21T07:30:13.442732Z

## Published at

2025-11-21T07:23:44.502837Z

## Doi

https://doi.org/10.48505/nims.5919

## First published url



## Date published



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## Resource type

conference_presentation

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Substrate Materials dependence of Magnetic Domain Formation in CoFe Nanolayer
    Electrode Patterns
  title_type: alternative
  lang: ja
- title: Substrate Materials dependence of Magnetic Domain Formation in CoFe Nanolayer
    Electrode Patterns
  title_type: original
  lang: en

## Description

- description: In this study, we report on the substrate materials dependences of
    magnetic domain formation in ferromagnetic CoFe nanolayer electrode patterns with
    CoFe layer thicknesses of 35 nm using direct observations by MFM. The substrate
    materials in the current study are MgO nanolayers, whose thicknesses are 1 and
    4 nm, deposited on GaAs (001) wafers and amorphous SiO2 layers with the thickness
    of 1 μm thermally oxidized on Si (111) wafer surfaces. The influence of heterointerfaces
    on magnetic domain formation in CoFe nanolayer electrode patterns is also discussed.
    Without any application of B, we observe the marked reflux, double reflux, and
    single magnetic domains in the case of the samples with relatively thick buffer
    layers under CoFe. The CoFe nanolayer electrode patterns with 1-nm-MgO layers
    formed large number of (or multiple) small magnetic domains. These results suggest
    that the surface roughness of buffer layers plays an important role for magnetic
    domain formation in CoFe.
  description_type: abstract
  lang: eng

## Creator

- name: Hayato Yonemoto
  role: author
  organization: RCIQE, Hokkaido University
- name: Rui Ochiai
  role: author
  organization: RCIQE, Hokkaido University
- name: Soh Komatsu
  role: author
  organization: Japan Advanced Institute of Science and Technology
- name: Masashi Akabori
  role: author
  organization: Japan Advanced Institute of Science and Technology
- name: Shinjiro Hara
  role: author
  orcid: https://orcid.org/0000-0003-3047-3565
  organization: National Institute for Materials Science
  department: Research Center for Materials Nanoarchitectonics (MANA)/Semiconductor
    Materials Field/Semiconductor Nano-integration Group

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## Keyword

- subject: Magnetic domain formation
  schema: not_defined
- subject: CoFe/MgO
  schema: not_defined
- subject: Magnetic force microscopy
  schema: not_defined
- subject: GaAs(001)
  schema: not_defined

## Rights

- description: "©2025 The Japan Society of Applied Physics"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: The 38th International Microprocesses and Nanotechnology Conference (MNC 2025)
start_date: 2025-11-17
end_date: 2025-11-20
identifier: https://imnc.jp/2025/

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## Fileset

- id: 6a00be96-a469-42c4-8cb8-fb5e3adff953
  filename: MNC2025_Abstract_H_Yonemoto_Hokkaido_Univ_submitted.pdf
  content_type: application/pdf
  size: 1302981
  md5: 70bbd01890d72ef6369a28438b38ecbb

## Thumbnail

fileset_id: 6a00be96-a469-42c4-8cb8-fb5e3adff953
filename: MNC2025_Abstract_H_Yonemoto_Hokkaido_Univ_submitted.pdf