2024

Imaging of magnetization response of soft magnetic thin film using diamond quantum sensors with wide frequency range,
Ryota Kitagawa, Aoi Nakatsuka, Teruo Kohashi, Takeyuki Tsuji, Honami Nitta, Yota Takamura, Shigeki Nakagawa, Takayuki Iwasaki, Amir Yacoby, Mutsuko Hatano,
APS March Meeting 2024,
Minneapolis,
8 Mar. 2024.

2023

Imaging AC magnetization response of soft magnetic thin film using diamond quantum sensors,
Aoi Nakatsuka, Ryota Kitagawa, Teruo Kohashi, Takeyuki Tsuji, Shiyunsuke Nagata, Honami Nitta, Yota Takamura, Shigeki Nakagawa, Takayuki Iwasaki, Mutsuko Hatano,
Quantum Innovation 2023/6th International Forum on Quantum Metrology and Sensing,
Tokyo,
16 Nov. 2023.
Widefield imaging of the magnetization process in soft magnetic-thin film using diamond quantum sensors,
Ryota Kitagawa, Teruo Kohashi, Takeyuki Tsuji, Shiyunsuke Nagata, Aoi Nakatsuka, Honami Nitta, Yota Takamura, Shigeki Nakagawa, Takayuki Iwasaki, Mutsuko Hatano,
Quantum Innovation 2023/6th International Forum on Quantum Metrology and Sensing,
Tokyo,
16 Nov. 2023.
Development of Ultra-Thin CoPt Films with Electrodeposition for Three-Dimensional Domain Wall Motion Memory,
Tongshuang Huang, Yota Takamura, Mikiko Saito, Md Mahmudul Hasan, Shinya Kasai, Yoshiaki Sonobe, Shigeki Nakagawa,
Intermag2023,
Sendai, Miyagi,
NPA-06,
15 May. 2023.
Fabrication and characterization CoZrO films deposited by facing targets reactive sputtering for micro magnetic inductor,
Tadayuki Kaneko, Honami Nitta, Yota Takamura, Shigeki Nakagawa,
The First International Symposium on Integrated Magnetics 2023 (iSIM 2023),
Sendai, Miyagi,
CP-20,
15 May. 2023.
Fabrication of CoFeB-SiO2 films with large uniaxial anisotropic by facing target sputtering and its application to high frequency planar type spiral inductors,
Yota Takamura, Honami Nitta, Kazuma Kawahara, Tadayuki Kaneko, Ryosuke Ishido, Tatsuya Miyazaki, Naoki Hosoda, Keisuke Fujisaki, Shigeki Nakagawa,
Intermag2023,
Sendai, Miyagi,
Intermag 2023 Digest Book,
MOA-05,
15 May. 2023.
Simulation and fabrication of planar type spiral inductors with facing target sputtered CoFeB-SiO2 magnetic layers,
Yota Takamura, Honami Nitta, R. Ishido, Tadayuki Kaneko, Satoshi Miyazaki, Mankichi Hosoda, Kazuyuki Fujisaki, Shigeki Nakagawa,
The First International Symposium on Integrated Magnetics 2023 (iSIM 2023),
Sendai, Miyagi,
CP-15,
15 May. 2023.

2022

Spin-orbit torque magnetization switching in a perpendicularly magnetized full Heusler alloy Co2FeSi,
Miao Jiang, Eisuke Matsushita, Yota Takamura, Duc Anh Le, Shigeki Nakagawa, Shinobu Ohya, Masaaki Tanaka,
2022 Joint MMM-INTERMAG Conference,
GOL-03,
10 Jan. 2022.

2021

Imaging of Weight Distribution Using a Hybrid System Based on Piezoactive Magnetic Material and Diamond Quantum Sensor,
Ryota Kitagawa, Shiyunsuke Nagata, Soki Urashita, Keigo Arai, Kosuke Mizuno, Hitoshi Ishiwata, Yota Takamura, Takayuki Iwasaki, Shigeki Nakagawa, Mutsuko Hatano,
2021 MRS Fall Meeting & Exhibit,
7 2021.
Sensitivity of weight imaging using a hybrid system based on piezoactivemagnetic material and diamond quantum sensor,
Ryota Kitagawa, Shiyunsuke Nagata, Soki Urashita, Keigo Arai, Kosuke Mizuno, Hitoshi Ishiwata, Yota Takamura, Takayuki Iwasaki, Shigeki Nakagawa, Mutsuko Hatano,
The 4th International Forum on Quantum Metrology and Sensing,
8 2021.
Stress detection by a hybrid system based on piezoactive magnetic material and diamond quantum sensor towards biological mass microscopy,
Ryota Kitagawa, Soki Urashita, Keigo Arai, Kosuke Mizuno, Hitoshi Ishiwata, Yota Takamura, Takayuki Iwasaki, Shigeki Nakagawa, Mutsuko Hatano,
31st International Conference on Diamond and Carbon Materials,
8 Sep. 2021.

2020

Hybrid system of giant magnetostrictive material and diamond NV color centers for mass imaging,
Ryota Kitagawa, Soki Urashita, Keigo Arai, Kosuke Mizuno, Hitoshi Ishiwata, Yota Takamura, Takayuki Iwasaki, Shigeki Nakagawa, Mutsuko Hatano,
2020 Virtual MRS Spring/Fall Meeting and Exhibit,
Nov. 2020.
Magnetic characterization of µm-thick pure steels for power electronics application.,
Yota Takamura, J. Tanase, G. Nguyen, Soki Urashita, Shigeki Nakagawa, K. Fujisaki,
The International Magnetics Conference 2020,
Montreal,
Intermag Americas 2020 Abstracts Book,
p. 634,
6 May. 2020.

2019

EXAFS Analysis of SmFe2 Thin Films with Perpendicular Magnetic Anisotropy for Piezoelectric Magnetic Tunnel Junctions.,
Yota Takamura, Hayato Onozawa, Soki Urashita, Masato Tomita, Shigeki Nakagawa,
2019 Annual Conference on Magnetism and Magnetic Materials,
Las Vegas,
AQ-11,
5 Nov. 2019.
In-situ observation of residual stress in granular type alloy-oxide composite thin films,
Shigeki Nakagawa, Yoshimasa Ogawa, Yota Takamura,
12th International Conference on Ferrites,
Boston,
ICF-12,
30 Oct. 2019.

2018

Fabrication of Sm-rich SmFe2 thin films with giant negative magnetostriction,
Masato Tomita, Yugo Ishitani, Shiori Ishiyama, Yota Takamura, Shigeki Nakagawa,
The 5th International Conference of Asian Union of Magnetics Societies (IcAUMS 2018),
Jeju,
6 Jun. 2018.
Investigation of amorphous SmFe2 thin films with giant negative magnetostriction and perpendicular magnetic anisotropy,
Masato Tomita, Yugo Ishitani, Shiori Ishiyama, Yota Takamura, Shigeki Nakagawa,
2018 IEEE International Magnetics Conference (Intermag),
Singapore,
2018 IEEE International Magnetics Conference (INTERMAG),
p. 1,
23 Apr. 2018.
Study on half-metallic ferromagnetic thin films with perpendicular magnetic anisotropy for spintronics device application,
Yota Takamura, Shigeki Nakagawa,
2nd Taiwan-Japan International Engineering Forum,
Taipei,
p. 55,
1 Mar. 2018.

2017

Methods to induce perpendicular magnetic anisotropy for full Heusler Co2FeSi thin layers in p-MTJ structure,
Shigeki Nakagawa, Kouki Shinohara, Yota Takamura,
62nd Annual Conference on Magnetism and Magnetic Materials,
Pittsburgh, PA,
FP-10,
8 Nov. 2017.

2016

Exchange coupling in Co2FeSi/Mn3Ge bilayers with high spin polarization and perpendicular magnetic anisotropy,
Shigeki Nakagawa, Naoki Matsushita, Yukimasa Naganuma, Taishi Yabushita, Yota Takamura, Y. Sonobe,
The 61st Annual Conference on Magnetism and Magnetic Materials (2016 MMM),
New Orleans, Louisiana,
31 Oct. 2016.
Inverse-magnetostriction-induced switching current reduction of STT-MTJs and its application for low-voltage MRAMs,
Yota Takamura, Yusuke Shuto, Shuu'ichirou Yamamoto, Hiroshi Funakubo, Minoru Kuribayashi Kurosawa, Shigeki Nakagawa, Satoshi Sugahara,
2016 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon (EUROSOI-ULIS),
Vienna,
2016 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon (EUROSOI-ULIS),
pp. 72-75,
Jan. 2016.

2015

Crystal Growth of Cobalt Ferrite on Silicon and its Application to Magneto-optical Isolator,
Megumi Yanaga, Yuya Shoji, Yota Takamura, Shigeki Nakagawa, Tetsuya Mizumoto,
International Materials Research Congress 2015,
Cancun,
IMRC2015 Conference Digest,
S7D-0012,
16 Aug. 2015.
Anomalous change and development of anisotropic residual stress at the initial stage of FeCo film growth,
Shigeki Nakagawa, Hisanori Hayashibara, Yota Takamura,
20th International Conference on Magnetism,
Barcelona,
5 Jul. 2015.
Origin of Perpendicular Magnetic Anisotropy of [Co2MnSi/Pd]n Superlattice Films on Various Substrates,
Shigeki Nakagawa, Yota Takamura,
ICMAT2015&IUMRS-ICA2015,
Singapore,
28 Jun. 2015.
Fabrication of SmCo films using facing targets sputtering system with sputtering Ar and Xe gas,
Yota Takamura, Hidetada Sakai, Shigeki Nakagawa,
IEEE International Magnetics Conference (Intermag),
Beijing,
DD-01,
13 May. 2015.
In-situ internal stress observation of ferromagnetic thin films at the initial stage of the film growth during sputter-deposition process,
Hisanori Hayashibara, Masanari Nakagome, Yota Takamura, Shigeki Nakagawa,
IEEE International Magnetics Conference (Intermag),
Beijing,
2015 IEEE International Magnetics Conference (INTERMAG),
IEEE,
HC-11,
15 May. 2015.
Oxygen partial gas pressure dependence of interfacial perpendicular magnetic anisotropy in Co2FeSi/MgO thin films,
Kouki Shinohara, Takahiro Suzuki, Yota Takamura, Shigeki Nakagawa,
IEEE International Magnetics Conference (Intermag),
Beijing,
GB-02,
15 May. 2015.

2014

Characterization of Ta/SmCo5/Ta multilayers formed by facing targets sputtering system,
Hidetada Sakai, Makio Kondo, Yota Takamura, Shigeki Nakagawa,
The 59th Annual Magnetism and Magnetic Materials Conference,
Hawaii,
EC-05,
5 Nov. 2014.
Magnetic anisotropy of [Co2MnSi/Pd]n superlattice films prepared on MgO(111) substrates,
Naoki Matsushita, Yorinobu Fujino, Yota Takamura, Y. Sonobe, Shigeki Nakagawa,
The 15th IUMRS-International Conf. in Asia (IUMRS-ICA 2014),
Fukuoka, Fukuoka,
CA-O25-003,
25 Aug. 2014.
Magnetic anisotropy of [Co2MnSi/Pd]n superlattice films prepared on MgO(100), (110) and (111) substrates,
Yorinobu Fujino, Naoki Matsushita, Yota Takamura, Y. Sonobe, Shigeki Nakagawa,
the IEEE International Magnetics Conference, INTERMAG Europe 2014,
Dresden,
6 May. 2014.

2013

Characterization of [Co2MnSi/Pd]n superlattice with perpendicular magnetic anisotropy formed by ultrathin FeCo-insertion technique between Co2MnSi and Pd layers,
Yorinobu Fujino, Y. Kubota, Yota Takamura, Y. Sonobe, Shigeki Nakagawa,
The 58th Annual Conf. on Magnetism and Magnetic Materials (MMMM),
Denver, Colorado,
BS-08,
5 Nov. 2013.
Full-Heusler Co2FeSi alloy thin films with perpendicular magnetic anisotropy induced by MgO-interface,
Yota Takamura, Takahiro Suzuki, Yorinobu Fujino, Shigeki Nakagawa,
The 58th Annual Magnetism and Magnetic Materials (MMM) Conference,
Denver, Colorado,
Nov. 2013.