NIIZEKI Tomohiko 新関智彦

Researcher Number	40567749
Affiliation (based on the past Project Information) *help	2014: 物質・材料研究機構, 磁性材料ユニット, NIMSポスドク研究員 2013 – 2014: 東北大学, 原子分子材料科学高等研究機構, 助教 2010: 独立行政法人物質・材料研究機構, 磁性材料センター, NIMSポスドク研究員
Review Section/Research Field	Principal Investigator Applied materials Except Principal Investigator Applied materials science/Crystal engineering
Keywords	Principal Investigator トンネル磁気抵抗効果 / フェライト / 酸化物 / ハーフメタル / 強磁性トンネル接合 / マグネタイト / スピネル Except Principal Investigator 2重トンネル接合 / スピントロニクス素子 / 共鳴トンネル効果 … More / トンネル磁気抵抗効果 / ２重トンネル接合 / 格子整合 / スピン緩和 / ナノ材料 / 超薄膜 / 2重接合 / 超構造 / 低次元 / ナノ粒子 / ナノ構造 / スピントロニクス / 磁性 Less

Creation of room temperature half-metallic magnetic tunnel junction having a spinel crystal structurePrincipal Investigator
- Principal Investigator
  
  NIIZEKI Tomohiko
- Project Period (FY)
  2013 – 2014
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Applied materials
- Research Institution
  Tohoku University
Spin dependent resonant tunneling and related properties in perfectly lattice-matched double tunnel junctions
- Principal Investigator
  
  MITANI Seiji
- Project Period (FY)
  2011 – 2014
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Applied materials science/Crystal engineering
- Research Institution
  National Institute for Materials Science
Spin relaxation time in low dimensional nanostructures and its application to spintronic devices
- Principal Investigator
  
  MITANI Seiji
- Project Period (FY)
  2008 – 2010
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Applied materials science/Crystal engineering
- Research Institution
  National Institute for Materials Science

All 2015 2014 2013 2012 2011 2010 Other

All Journal Article Presentation

[Journal Article] Magnetic properties of cobalt ferrite (001) films grown on spinel-type buffer layers2015
- Author(s)
  Yuki Hisamatsu, Tomohiko Niizeki, Hideto Yanagihara, and Eiji Kita
- Journal Title
  
  IEEE Transactions on Magnetics
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25790039
[Journal Article] Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films2015
- Author(s)
  T. Niizeki, T. Kikkawa, K. Uchida, M. Oka, K. Z. Suzuki, H. Yanagihara, E. Kita, E. Saitoh
- Journal Title
  
  AIP Advances
  
  Volume: 5 Issue: 5 Pages: 053603-053603
- DOI
  10.1063/1.4916978
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25707029, KAKENHI-PROJECT-25790039, KAKENHI-PROJECT-26600067, KAKENHI-PLANNED-26103005
[Journal Article] Vacancy-site existence in Fe-rich cobalt ferrite epitaxial thin films revealed by x-ray magnetic circular dichroism2015
- Author(s)
  Tomohiko Niizeki, Yuji Utsumi, Makoto Myoka, Hideto Yanagihara, Jun-ichiro Inoue, Goro Shibata, Toshiharu Kadono, Masako Sakamaki, Kenta Amemiya, Tsuneharu Koide, and Eiji Kita
- Journal Title
  
  Applied Physics Letters
  
  Volume: -
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25790039
[Journal Article] Extraordinarily large perpendicular magnetic anisotropy in epitaxially strained cobalt- ferrite CoxFe3xO4(001) (x=0.75, 1.0) thin films2014
- Author(s)
  Tomohiko Niizeki, Yuji Utsumi, Ryohei Aoyama, Hideto Yanagihara, Jun-ichiro Inoue, Yuichi Yamasaki, Hironori Nakao, Kazuyuki Koike, and Eiji Kita
- Journal Title
  
  Applied Physics Letters
  
  Volume: 103 Issue: 16 Pages: 162407-162407
- DOI
  10.1063/1.4824761
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25790039
[Journal Article] Large perpendicular magnetic anisotropy at Fe/MgO interfaces2013
- Author(s)
  J. W. Koo, S. Mitani, T. T. Sasaki, H. Sukegawa, Z. C. Wen, T. Ohkubo, T. Niizeki, K. Inomata and K. Hono
- Journal Title
  
  Appl. Phys. Lett.
  
  Volume: 103 Issue: 19
- DOI
  10.1063/1.4828658
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23246006
[Journal Article] Enhanced tunnel magnetoresistance in a spinel oxide barrier with cation site disorder2012
- Author(s)
  H. Sukegawa, Y. Miura, S. Muramoto, S. Mitani, T. Niizeki, T. Ohkubo, K. Abe, M. Shirai, K. Inomata, K. Hono
- Journal Title
  
  Physical Review B
  
  Volume: 86巻 Issue: 18
- DOI
  10.1103/physrevb.86.184401
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22360014, KAKENHI-PROJECT-22686066, KAKENHI-PROJECT-23246006
[Journal Article] Correlation between symmetry-selective transport and spin-dependent resonant tunneling in fully epitaxial Cr/ultrathin-Fe/MgO/Fe(001) magnetic tunnel junctions2011
- Author(s)
  T.Niizeki
- Journal Title
  
  Appl.Phys.Lett.
  
  Volume: 99 Issue: 18
- DOI
  10.1063/1.3647578
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23246006
[Journal Article] Fully epitaxial Fe/MgO/Fe(001) junctions with nonmagnetic metal layer insertion2011
- Author(s)
  T.Niizeki
- Journal Title
  
  J.Appl.Phys.
  
  Volume: 109
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20360002
[Journal Article] Structural instability of FeCo ultrathin films grown on MgO(100)2011
- Author(s)
  S.Mitani, T.Niizeki
- Journal Title
  
  J.Phys. : Conf.Ser. 266
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20360002
[Journal Article] Fully epitaxial Fe/MgO/Fe(001) junctions with nonmagnetic metal layer insertion2011
- Author(s)
  T.Niizeki, S.Mitani, H.Sukegawa, S.Kasai, K.Inomata
- Journal Title
  
  J.Appl.Phys. 109
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20360002
[Presentation] コバルトフェライト(001)薄膜における垂直磁気異方性の下地依存性2013
- Author(s)
  久松裕季，新関智彦，柳原英人，喜多英治
- Organizer
  第37回日本磁気学会学術講演会
- Place of Presentation
  北海道大学工学部
- Data Source
  KAKENHI-PROJECT-25790039
[Presentation] フルエピタキシャルFe/bcc Cu/MgO/Fe(001)強磁性トンネル接合におけるスピン依存量子井戸2011
- Author(s)
  新関智彦
- Organizer
  2011年秋季第72回応用物理学会学術講演会
- Place of Presentation
  山形大学、山形市
- Year and Date
  2011-09-02
- Data Source
  KAKENHI-PROJECT-23246006
[Presentation] Fully Epitaxial Fe/MgO/Fe(001) Junctions with Nonmagnetic Metal Layer Insertion2010
- Author(s)
  T.Niizeki, S.Mitani, H.Sukegawa, S.Kasai, K.Inomata
- Organizer
  55^<th> Magnetism and Magnetic Materials Conference
- Place of Presentation
  Atlanta, USA
- Year and Date
  2010-11-18
- Data Source
  KAKENHI-PROJECT-20360002
[Presentation] フルエピタキシャルFe/MgO/Fe(001)接合界面への非磁性層挿入2010
- Author(s)
  新関智彦、三谷誠司、介川裕章、葛西伸哉、猪俣浩一郎
- Organizer
  第71回応用物理学会学術講演会
- Place of Presentation
  長崎大学
- Year and Date
  2010-09-17
- Data Source
  KAKENHI-PROJECT-20360002
[Presentation] フルエピタキシャルFe/MgO/Fe(001)接合界面への非磁性層挿入2010
- Author(s)
  新関智彦
- Organizer
  応用物理学会学術講演会
- Place of Presentation
  長崎大学(長崎県)
- Year and Date
  2010-09-17
- Data Source
  KAKENHI-PROJECT-20360002
[Presentation] Fully Epitaxial Fe/MgO/Fe(001) Junctions with Nonmagnetic Metal Layer Insertion2010
- Author(s)
  T.Niizeki
- Organizer
  55^<th> Magnetism and Magnetic Materials Conference
- Place of Presentation
  Atlanta(米国)
- Year and Date
  2010-11-18
- Data Source
  KAKENHI-PROJECT-20360002
[Presentation] 高垂直磁気異方性コバルトフェライト (001) 薄膜におけるカチオン価数・サイト分布
- Author(s)
  新関智彦, 内海優史, 柳原英人, 井上順一郎, 芝田悟朗, 門野利治, 酒巻真粧子, 雨宮健太, 小出常晴, 喜多英治
- Organizer
  第38回日本磁気学会学術講演会
- Place of Presentation
  慶應義塾大学日吉キャンパス (神奈川県)
- Year and Date
  2014-09-02 – 2014-09-05
- Data Source
  KAKENHI-PROJECT-25790039
[Presentation] Observation of spin-Seebeck effect in cobalt-ferrite epitaxial thin film
- Author(s)
  Tomohiko Niizeki, Takashi Kikkawa, Ken-ichi Uchida, Eiji Saitoh, Mineto Oka, Kazuya Z. Suzuki, Hideto Yanagihara, and Eiji Kita
- Organizer
  第75回日本応用物理学会秋季講演会
- Place of Presentation
  北海道大学 (北海道)
- Year and Date
  2014-09-17 – 2014-09-20
- Data Source
  KAKENHI-PROJECT-25790039
[Presentation] Longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films with different preferential axes
- Author(s)
  Tomohiko Niizeki, Takashi Kikkawa, Ken-ichi Uchida, Mineto Oka, Kazuya Z. Suzuki, Hideto Yanagihara, Eiji Kita, and Eiji Saitoh
- Organizer
  20th International Conference on Magnetism
- Place of Presentation
  Barcelona (Spain)
- Year and Date
  2015-07-05 – 2015-07-10
- Data Source
  KAKENHI-PROJECT-25790039
[Presentation] Observation of spin-Seebeck effect in cobalt-ferrite epitaxial film
- Author(s)
  Tomohiko Niizeki, Takashi Kikkawa, Ken-ichi Uchida, Mineto Oka, Kazuya Z. Suzuki, Hideto Yanagihara, Eiji Kita, and Eiji Saitoh
- Organizer
  The AIMR International Symposium 2015 (AMIS2015)
- Place of Presentation
  Sendai International Center (Japan)
- Year and Date
  2015-02-17 – 2015-02-19
- Data Source
  KAKENHI-PROJECT-25790039
[Presentation] Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin film
- Author(s)
  Tomohiko Niizeki, Takashi Kikkawa, Ken-ichi Uchida, Eiji Saitoh, Mineto Oka, Kazuya Z. Suzuki, Hideto Yanagihara, and Eiji Kita
- Organizer
  59th Annual Conference on Magnetism and Magnetic Materials
- Place of Presentation
  Honolulu (Hawaii)
- Year and Date
  2014-11-03 – 2014-11-07
- Data Source
  KAKENHI-PROJECT-25790039

1. MITANI Seiji (20250813)

# of Collaborated Projects: 2 results

# of Collaborated Products: 5 results
2. SAKURABA Yuya (10451618)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. MIZUGUCHI Masaki (50397759)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. KASAI Shinya (20378855)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. SUKEGAWA Hiroaki (30462518)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
6. HAYASHI Masamitsu (70517854)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. WEN Zhenchao

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
8. KOO Jungwoo

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
9. SCHEIKE Thomas

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 三浦良雄

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
11. 白井正文

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
12. 内田健一

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

NIIZEKI Tomohiko 新関 智彦

Research Projects

Research Products

Co-Researchers

Creation of room temperature half-metallic magnetic tunnel junction having a spinel crystal structurePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Spin dependent resonant tunneling and related properties in perfectly lattice-matched double tunnel junctions

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Spin relaxation time in low dimensional nanostructures and its application to spintronic devices

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Magnetic properties of cobalt ferrite (001) films grown on spinel-type buffer layers2015

Author(s)

Journal Title

Data Source

[Journal Article] Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films2015

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Vacancy-site existence in Fe-rich cobalt ferrite epitaxial thin films revealed by x-ray magnetic circular dichroism2015

Author(s)

Journal Title

Data Source

[Journal Article] Extraordinarily large perpendicular magnetic anisotropy in epitaxially strained cobalt- ferrite CoxFe3xO4(001) (x=0.75, 1.0) thin films2014

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Large perpendicular magnetic anisotropy at Fe/MgO interfaces2013

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Enhanced tunnel magnetoresistance in a spinel oxide barrier with cation site disorder2012

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Correlation between symmetry-selective transport and spin-dependent resonant tunneling in fully epitaxial Cr/ultrathin-Fe/MgO/Fe(001) magnetic tunnel junctions2011

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Fully epitaxial Fe/MgO/Fe(001) junctions with nonmagnetic metal layer insertion2011

Author(s)

Journal Title

Data Source

[Journal Article] Structural instability of FeCo ultrathin films grown on MgO(100)2011

Author(s)

Journal Title

Data Source

[Journal Article] Fully epitaxial Fe/MgO/Fe(001) junctions with nonmagnetic metal layer insertion2011

Author(s)

Journal Title

Data Source

[Presentation] コバルトフェライト(001)薄膜における垂直磁気異方性の下地依存性2013

Author(s)

Organizer

Place of Presentation

Data Source

[Presentation] フルエピタキシャルFe/bcc Cu/MgO/Fe(001)強磁性トンネル接合におけるスピン依存量子井戸2011

Author(s)

Organizer

Place of Presentation

Year and Date

Data Source

[Presentation] Fully Epitaxial Fe/MgO/Fe(001) Junctions with Nonmagnetic Metal Layer Insertion2010

Author(s)

NIIZEKI Tomohiko 新関智彦