# Interface perpendicular magnetic anisotropy in heterostructures consisting of CoFeB and conductive rock-salt Li–Ti–O

https://mdr.nims.go.jp/datasets/e2e9f4ca-251e-4b29-9118-e9813d0a1e46

## File

- [JPD_Koizumi-LTO_20250227_Clean.pdf](https://mdr.nims.go.jp/filesets/43e441e4-2167-44f2-8d61-52b08fa2e5f6/download) ([Detail](https://mdr.nims.go.jp/filesets/43e441e4-2167-44f2-8d61-52b08fa2e5f6.md))

## Id

e2e9f4ca-251e-4b29-9118-e9813d0a1e46

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-11T00:10:29.142717Z

## Updated at

2026-03-10T07:30:32.803122Z

## Published at

2026-03-10T04:44:52.143372Z

## Doi

https://doi.org/10.48505/nims.5359

## First published url

https://doi.org/10.1088/1361-6463/adbb78

## Date published

2025-04-21

## Recorded date published

2025-4-21

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Interface perpendicular magnetic anisotropy in heterostructures consisting
    of CoFeB and conductive rock-salt Li–Ti–O
  title_type: original
  lang: en

## Description

- description: We investigated interface perpendicular magnetic anisotropy (PMA) in
    magnetic heterostructures consisting of ferromagnetic metal CoFeB and conductive
    rock-salt Li–Ti–O (LTO) layers, which can be classified into an unconventional
    group different from metallic multilayers and tunnel junctions. The rock-salt
    structure was confirmed by reflection high-energy electron diffraction for the
    5 nm thick LTO layers epitaxially grown on a MgO(001) buffer layer. Interface
    PMA was clearly observed for the LTO/CoFeB heterostructures with post-annealing
    (PA) above 250 ◦C, and the effective PMA energy density reached 1.18 Merg cm−3
    with PA at 300 ◦C. The LTO layer thickness dependence of the resistance area product
    and tunnel magnetoresistance showed a clear difference in transport properties
    between the present LTO/CoFeB and the conventional MgO/CoFeB heterostructures,
    as evidence for the electrical conductivity of LTO in the LTO/CoFeB heterostructure.
    The conductive LTO can be used as a new building block for a PMA heterostructure
    for spintronic devices.
  description_type: abstract
  lang: und

## Creator

- name: Hiroki Koizumi
  role: author
- name: Zhenchao Wen
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
- name: Jun Uzuhashi
  role: author
  orcid: https://orcid.org/0000-0003-2023-8158
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Hiroaki Sukegawa
  role: author
  orcid: https://orcid.org/0000-0002-4034-7848
- name: Seiji Mitani
  role: author
  orcid: https://orcid.org/0000-0002-1348-0774

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: spintronics
  schema: not_defined
- subject: epitaxial
  schema: not_defined
- subject: LiTi2O4
  schema: not_defined
- subject: perpendicular magnetic anisotropy
  schema: not_defined

## Rights

- description: 'This is the Accepted Manuscript version of an article accepted for
    publication in Journal of Physics D: Applied Physics.  IOP Publishing Ltd is not
    responsible for any errors or omissions in this version of the manuscript or any
    version derived from it.  The Version of Record is available online at https://dx.doi.org/10.1088/1361-6463/adbb78. '
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-03-10
end_date: 2026-03-11

## Journal

- title: 'Journal of Physics D: Applied Physics'
  issn: '00223727'
  volume: '58'
  issue: '16'

## Conference



## Related item



## Funding

- identifier: JPJ011438
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMJCR19J4
  funder_name: Japan Science and Technology Agency
- identifier: JPNP16007
  funder_name: New Energy and Industrial Technology Development Organization
- identifier: 22J00871
  funder_name: JSPS

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: 43e441e4-2167-44f2-8d61-52b08fa2e5f6
  filename: JPD_Koizumi-LTO_20250227_Clean.pdf
  content_type: application/pdf
  size: 1247041
  md5: 5f49056bd81d5224988cba250804b2a3

## Thumbnail

fileset_id: 43e441e4-2167-44f2-8d61-52b08fa2e5f6
filename: JPD_Koizumi-LTO_20250227_Clean.pdf