Takeshi SEKI, Ph. D

Nationality: JAPAN

Birth: January 10, 1980 in Shizuoka Prefecture

Age: 42

Position: Associate Professor

Affiliation: Institute for Materials Research, Tohoku University, JAPAN

Educational Background

1998 April - 2002 March:
B.Eng. Faculty of Metallurgy, Materials Science and Material Processing,Tohoku University, JAPAN

2002 April - 2003 September:
M.Eng. Department of Metallurgy, Materials Science and Material Processing,Graduate School of Engineering, Tohoku University, JAPAN

2003 October - 2006 September:
Ph.D Department of Metallurgy, Materials Science and Material Processing,Graduate School of Engineering, Tohoku University, JAPAN
"Current-Induced Magnetization Reversal in FePt Nanostructures"

 

Professional Career

2005 April - 2006 September: JSPS Research Fellow (DC2) (Tohoku University, JAPAN)

2006 October - 2007 March: JSPS Research Fellow (PD) (Tohoku University, JAPAN)

2007 April - 2008 March: Post-doctoral Researcher (Tohoku University, JAPAN)

2008 April - 2010 March: JSPS Research Fellow (SPD) (Osaka University, JAPAN)

2010 April - 2016 January: Assistant Professor (Tohoku University, JAPAN)

2016 February - : Associate Professor (Tohoku University, JAPAN)

 

2014 October - 2018 March: PRESTO Researcher (Japan Science and Technology Agency (JST), JAPAN)

2017 April - : Visiting Researcher (National Institute for Materials Science (NIMS), JAPAN)

 

Research Subjects

Materials Development for Spintronics / Spin Transfer Phenomena / Magnetization dynamics / Spin Currents /
Magnetization Reversal Mechanism / Hard Magnetic Properties / Ordered alloy systems

 

- Full List of Publications and Presentations (2021.6.15)

 

Publications (Selected Papers)

Hiroto Masuda,* Takeshi Seki,* Yuta Yamane, Rajkumar Modak, Ken-ichi Uchida, Jun’ichi Ieda, Yong-Chang Lau, Shunsuke Fukami, and Koki Takanashi
“Large Antisymmetric Interlayer Exchange Coupling Enabling Perpendicular Magnetization Switching by an In-Plane Magnetic Field”
Phys. Rev. Appl. 17, 054036-1-9 (2022).

Jian Wang,* Yong-Chang Lau, Weinan Zhou, Takeshi Seki,* Yuya Sakuraba, Takahide Kubota, Keita Ito, and Koki Takanashi
“Strain-Induced Large Anomalous Nernst Effect in Polycrystalline Co2MnGa/AlN Multilayers”
Adv. Electron. Mater. XX, 2101380-1-8 (2022).

Takeshi Seki,* Yong-Chang Lau, Satoshi Iihama, and Koki Takanashi
“Spin-orbit torque in a Ni-Fe single layer”
Phys. Rev. B 104, 094430-1-9 (2021).

Hiroto Masuda,* Rajkumar Modak, Takeshi Seki,* Ken-ichi Uchida, Yong-Chang Lau, Junsaku Nitta, and Koki Takanashi
“Spin Hall effect in a non-equilibrium Cu76Ir24 alloy measured at various temperatures”
AIP Advances 11, 095221-1-5 (2021).

Y.-C. Lau,* T. Seki, and K. Takanashi
“Highly fcc-textured Pt–Al alloy films grown on MgO(001) showing enhanced spin Hall efficiency”
APL Mater. 9, 081113-1-10 (2021).

J. Wang, T. Seki,* Y.-C. Lau, Y. K. Takahashi, and K. Takanashi
“Origin of magnetic anisotropy, role of induced magnetic moment, and all-optical magnetization switching for Co100−xGdx/Pt multilayers”
APL Mater. 9, 061110-1-8 (2021).

T. Seki,* Y. Sakuraba, K. Masuda, A. Miura, M. Tsujikawa, K. Uchida, T. Kubota, Y. Miura, M. Shirai, and K. Takanashi
“Enhancement of the anomalous Nernst effect in Ni/Pt superlattices”
Phys. Rev. B 103, L020402-1-7 (2021).

Hiroto Masuda, Rajkumar Modak, Takeshi Seki,* Ken-ichi Uchida,* Yong-Chang Lau, Yuya Sakuraba, Ryo Iguchi, and Koki Takanashi
“Large spin-Hall effect in non-equilibrium binary copper alloys beyond the solubility limit”
Commun. Mater. 1, 75-1-8 (2020). 

T. Seki,* M. Tsujikawa, K. Ito, K. Uchida, H. Kurebayashi, M. Shirai and K. Takanashi
“Perpendicularly magnetized Ni/Pt (001) epitaxial superlattice”
Phys. Rev. Mater. 4, 064413-1-9 (2020).

Hiroto Masuda,* Takeshi Seki,* Yong-Chang Lau, Takahide Kubota, and Koki Takanashi
“Interlayer exchange coupling and spin Hall effect through an Ir-doped Cu nonmagnetic layer”
Phys. Rev. B 101, 224413-1-10 (2020).

Santanu Pan, Takeshi Seki, Koki Takanashi, and Anjan Barman*
“Ultrafast demagnetization mechanism in half-metallic Heusler alloy thin films controlled by the Fermi level”
Phys. Rev. B 101, 224412-1-8 (2020).

Z. Wen,* Z. Qiu, S. Tölle, C. Gorini, T. Seki, D. Hou, T. Kubota, U. Eckern, E. Saitoh, and K. Takanashi
“Spin-charge conversion in NiMnSb Heusler alloy films”
Science Advances 5, eaaw9337-1-7 (2019).

T. Seki,* S. Iihama, T. Taniguchi, and K. Takanashi
“Large spin anomalous Hall effect in L10-FePt: Symmetry and magnetization switching”
Phys. Rev. B 100, 144427-1-8 (2019).

W. Zhou,* T. Seki,* H. Imamura, J. Ieda, and K. Takanashi
“Spinmotive force in the out-of-plane direction generated by spin wave excitations in an exchange-coupled bilayer element”
Phys. Rev. B 100, 094424-1-5 (2019).

T. Seki,* S. Kikushima, and K. Takanashi
“Anomalous Hall Effect and Anisotropic Magnetoresistance in Perpendicularly Magnetized FePt1-xPdx Films”
J. Magn. Soc. Jpn.43, 29-33 (2019).

T. Seki,* A. Miura, K. Uchida, T. Kubota, and K. Takanashi
“Anomalous Ettingshausen effect in ferrimagnetic Co-Gd”
Appl. Phys. Exp. 12, 023006-1-4 (2019).

T. Moriyama,* W. Zhou, T. Seki, K. Takanashi, and T. Ono
“Spin-Orbit-Torque Memory Operation of Synthetic Antiferromagnets”
Phys. Rev. Lett. 121, 167202-1-5 (2018).

W. Zhou, T. Seki,* T. Kubota, G. E. W. Bauer, and K. Takanashi
“Spin-Hall and anisotropic magnetoresistance in ferrimagnetic Co-Gd/Pt layers”
Phys. Rev. Mater. 2, 094404-1-7 (2018).

T. Seki,* R. Iguchi, K. Takanashi, and K. Uchida*
“Relationship between anomalous Ettingshausen effect and anomalous Nernst effect in an FePt thin film”
J. Phys. D: Appl. Phys. 51, 254001-1-6 (2018).

T. Seki,* R. Iguchi, K. Takanashi, and K. Uchida*
“Visualization of anomalous Ettingshausen effect in a ferromagnetic film: Direct evidence of different symmetry from spin Peltier effect”
Appl. Phys. Lett. 112, 152403-1-5 (2018).

T. Seki,* T. Kubota, T. Yamamoto, and K. Takanashi
“Size dependence of vortex-type spin torque oscillation in a Co2Fe0.4Mn0.6Si Heusler alloy disk”
J. Phys. D: Appl. Phys. 51 075005-1-7 (2018).

K. Ikeda,* T. Seki, G. Shibata, T. Kadono, K. Ishigami, Y. Takahashi, M. Horio, S. Sakamoto, Y. Nonaka, M. Sakamaki, K. Amemiya, N. Kawamura, M. Suzuki, K. Takanashi, and A. Fujimori
“Magnetic anisotropy of L10-ordered FePt thin films studied by Fe and Pt L2,3-edges x-ray magnetic circular dichroism”
Appl. Phys. Lett. 111, 142402-1-5 (2017).

W. Zhou,* T. Seki,* and K. Takanashi
“Magnetization switching behavior of exchange-coupled bilayer nanodots characterized by magneto-optical Kerr effect”
J. Appl. Phys. 122, 093902-1-5 (2017).

S. Kikushima, T. Seki,* K. Uchida, E. Saitoh, and K. Takanashi
“Electric field effect on magnetic anisotropy for Fe-Pt-Pd alloys”
AIP Advances 7, 085210-1-7 (2017).

Takeshi Seki,* Junpei Shimada, Satoshi Iihama, Masahito Tsujikawa, Tomoyuki Koganezawa, Akihiro Shioda, Takayuki Tashiro, Weinan Zhou, Shigemi Mizukami, Masafumi Shirai, and Koki Takanashi
“Magnetic Anisotropy and Damping for Monolayer-Controlled Co | Ni Epitaxial Multilayer”
J. Phys. Soc. Jpn., 86, 074710-1-10 (2017).

S. Pan, T. Seki, K. Takanashi, and A. Barman*
“Role of the Cr Buffer Layer in the Thickness-Dependent Ultrafast Magnetization Dynamics of Co2Fe0.4Mn0.6Si Heusler Alloy Thin Films”
Phys. Rev. Appl., 7, 064012-1-8 (2017).

T. Seki,* W. Zhou, T. Yamamoto, and K. Takanashi
“Control of Magnetization Dynamics in Ordered Alloy Systems” (Invited Review)
J. Magn. Soc. Jpn., 41, 46-51 (2017).

W. Zhou,* T. Yamaji, T. Seki, H. Imamura, and K. Takanashi
“Resonant magnetization switching conditions of an exchange-coupled bilayer under spin wave excitation”
Appl. Phys. Lett. 110, 082401-1-5 (2017).

W. Zhou, T. Seki,* H. Arai, H. Imamura, and K. Takanashi
“Vortex-dynamics-mediated low-field magnetization switching in an exchange-coupled system”
Phys. Rev. B 94, 220401(R)-1-5. (2016).

S. Pan, S. Mondal, T. Seki, K. Takanashi, and A. Barman*
“Influence of thickness-dependent structural evolution on ultrafast magnetization dynamics in Co2Fe0.4Mn0.6Si Heusler alloy thin films”
Phys. Rev. B 94, 184417-1-8 (2016).

T. Yamamoto,* T. Seki, and K. Takanashi
“Vortex spin-torque oscillator using Co2FexMn1−xSi Heusler alloys”
Phys. Rev. B 94, 094419-1-9 (2016).

S. Entani,* T. Seki, Y. Sakuraba, T. Yamamoto, S. Takahashi, H. Naramoto, K. Takanashi, and S. Sakai
“Magnetoresistance effect in Fe20Ni80/graphene/Fe20Ni80 vertical spin valves”
Appl. Phys. Lett. 109, 082406-1-5 (2016).

T. Yamamoto,* T. Seki, M. Kotsugi, and K. Takanashi
“Magnetic vortex in epitaxially-grown Co2(Fe,Mn)Si alloy”
Appl. Phys. Lett. 108, 152402-1-5 (2016).

T. Seki,* W. Zhou, and K. Takanashi
“Resonant switching for an in-plane magnetized L10-FePt | Ni81Fe19 bilayer under spin wave excitation”
J. Phys. D: Appl. Phys. 49 075002-1-10 (2016).

A. Hirohata, H. Sukegawa, H. Yanagihara, I. Zutic, T. Seki, S. Mizukami and R. Swaminathan
“Roadmap for Emerging Materials for Spintronic Device Applications” (Advances in Magnetics)
IEEE Trans. Magn., 51, 0800511-1-11 (2015).

S. Bedanta,* T. Seki, H. Iwama, T. Shima and K. Takanashi
“Superferromagnetism in dipolarly coupled L10 FePt nanodots with perpendicular magnetization”
Appl. Phys. Lett. 107, 152410-1-4 (2015).

K. Uchida,* T. Kikkawa, T. Seki, T. Oyake, J. Shiomi, Z. Qiu, K. Takanashi and E. Saitoh
“Enhancement of anomalous Nernst effects in metallic multilayers free from proximity-induced magnetism”
Phys. Rev. B 92, 094414-1-6 (2015).

T. Seki,* K. Uchida, T. Kikkawa, Z. Qiu, E. Saitoh, and K. Takanashi
“Observation of inverse spin Hall effect in ferromagnetic FePt alloys using spin Seebeck effect”
Appl. Phys. Lett. 107, 092401-1-4 (2015).

T. Seki,* H. Yako, T. Yamamoto, T. Kubota, Y. Sakuraba, and K. Takanashi
“Spin torque-induced magnetization dynamics in giant magnetoresistance devices with Heusler alloy layers”
J. Phys. D: Appl. Phys. 48 164010-1-8 (2015).

A. Shioda, T. Seki,* J. Shimada, and K. Takanashi
“Interface magnetic anisotropy for monatomic layer-controlled Co/Ni epitaxial multilayers”
J. Appl. Phys. 117, 17C726-1-4 (2015).

T. Yamamoto,* T. Seki, T. Kubota, H. Yako and K. Takanashi
“Zero-field spin torque oscillation in Co2(Fe, Mn)Si with a point contact geometry”
Appl. Phys. Lett. 106, 092406-1-5 (2015).

W. Zhou,* T. Seki, H. Iwama, T. Shima, and K. Takanashi
“Perpendicularly magnetized L10-FePt nanodots exchange-coupled with soft magnetic Ni81Fe19”
J. Appl. Phys. 117, 013905-1-6 (2015).

T. Seki,* Y. Sakuraba, H. Arai, M. Ueda, R. Okura, H. Imamura, and K. Takanashi
“High Power All-Metal Spin Torque Oscillator Using Full Heusler Co2(Fe,Mn)Si”
Appl. Phys. Lett. 105, 092406-1-5 (2014).

T. Yamamoto,* T. Seki, S. Ono, and K. Takanashi
“Observation and suppression of quantized spin waves in microfabricated permalloy elements”
Jpn. J. Appl. Phys.
53, 04EM01-1-3 (2014).

T. Yamamoto,* T. Seki, S. Ono, and K. Takanashi
“Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices”
J. Appl. Phys.
115, 17C505-1-3 (2014).

S. Bedanta,* A. Barman, W. Kleemann, O. Petracic, and T. Seki
“Magnetic Nanoparticles: A Subject for Both Fundamental Research and Applications (Review Article)”
Journal of Nanomaterials
, 2013, 952540-1-22 (2013).

M. Ogiwara, S. Iihama, T. Seki,* T. Kojima, S. Mizukami, M. Mizuguchi, and K. Takanashi
“Magnetization damping of an L10-FeNi thin film with perpendicular magnetic anisotropy”
Appl. Phys. Lett. 103, 242409-1-5 (2013).

T. Seki,* K. Hotta, H. Imamura, Y. Nozaki, and K. Takanashi
“Characteristic field angular dependence of magnetization switching assisted by spin wave excitation”
Appl. Phys. Lett. 103, 122403-1-4 (2013).

Y. Kikuchi, T. Seki,* M. Kohda, J. Nitta and K. Takanashi
“Voltage-induced coercivity change in FePt/MgO stacks with different FePt thicknesses”
J. Phys. D: Appl. Phys. 46 285002-1-6 (2013).

T. Seki,* K. Utsumiya, Y. Nozaki, H. Imamura, and K. Takanashi
“Spin Wave-Assisted Reduction in Switching Field of Highly Coercive Iron-Platinum Magnets”
Nature Communications, 4, 1726, doi: 10.1038/ncomms2737 (2013).

T. Seki,* Y. Sakuraba, R. Okura, and K. Takanashi
“High power radio frequency oscillation by spin transfer torque in a Co2MnSi layer: Experiment and macrospin simulation”
J. Appl. Phys., 113, 033907-1-6 (2013).

T. Seki,* Y. Kikuchi, and K. Takanashi
“Interface Magnetic Anisotropy Between L10-FePt and Nonmagnetic Layers”
IEEE Trans. Magn., 48, 3199-3202 (2012).

K. Utsumiya, T. Seki,* and K. Takanashi
“Magnetic properties of L10-FePt / permalloy exchange-spring films”
J. Appl. Phys. 110, 103911-1-6 (2011).

R. Okura, Y. Sakuraba,* T. Seki, K. Izumi, M. Mizuguchi, and K. Takanashi
“High-power rf oscillation induced in half-metallic Co2MnSi layer by spin-transfer torque”
Appl. Phys. Lett. 99, 052510-1-3 (2011).

T. Seki,* H. Iwama, T. Shima, and K. Takanashi
“Size dependence of the magnetization reversal process in microfabricated L10-FePt nano dots”
J. Phys. D: Appl. Phys. 44 335001-1-10 (2011).

T. Seki,* M. Kohda, J. Nitta, and K. Takanashi
“Coercivity change in an FePt thin layer in a Hall device by voltage application”
Appl. Phys. Lett. 98, 212505-1-3 (2011).

T. Seki,* H. Tomita, T. Shinjo, and Y. Suzuki
“rf auto-oscillations in antiferromagnetically coupled layers with different coupling strengths”
Appl. Phys. Lett. 97, 162508-1-3 (2010).

S. Ishibashi, T. Seki, T. Nozaki, H. Kubota, S. Yakata, A. Fukushima, S. Yuasa, H. Maehara, K. Tsunekawa, D. D. Djayaprawira, and Y. Suzuki*
“Large diode sensitivity of CoFeB/MgO/CoFeB magnetic tunnel junctions”
Appl. Phys. Exp. 3, 073001-1-3 (2010).

T. Wada, T. Yamane, T. Seki,* T. Nozaki, Y. Suzuki, H. Kubota, A. Fukushima, S. Yuasa, H. Maehara, Y. Nagamine, K. Tsunekawa, D. D. Djayaprawira, and N. Watanabe
“Spin-transfer-torque-induced rf oscillation in CoFeB/MgO/CoFeB magnetic tunnel junctions under a perpendicular magnetic field”
Phys. Rev. B 81, 104410-1-7 (2010).

T. Seki,* H. Tomita, M. Shiraishi, T. Shinjo, and Y. Suzuki
“Coupled-mode excitations induced in an antiferromagnetically coupled multilayer by spin-transfer torque”
Appl. Phys. Exp. 3, 033001-1-3 (2010).

T. Seki,* H. Tomita, A. A. Tulapurkar, M. Shiraishi, T. Shinjo, and Y. Suzuki
“Spin-transfer-torque-induced ferromagnetic resonance for Fe/Cr/Fe layers with an antiferromagnetic coupling field”
Appl. Phys. Lett. 94, 212505-1-3 (2009).

D. Wang, T. Seki,* K. Takanashi, and T. Shima
“Magnetization reversal process in microfabricated L10-FePt dots”
J. Phys. D: Appl. Phys. 41, 195008-1-6 (2008).

T. Seki,* S. Mitani, and K. Takanashi
“Nucleation-type magnetization reversal by spin-polarized current in perpendicularly magnetized FePt layers”
Phys. Rev. B 77, 214414-1-8 (2008).

T. Seki,* Y. Hasegawa, S. Mitani, S. Takahashi, H. Imamura, S. Maekawa, J. Nitta, and K. Takanashi
“Giant spin Hall effect in perpendicularly spin-polarized FePt/Au devices.”
Nature Mater. 7, 125-129 (2008).

T. Seki,* S. Mitani, K. Yakushiji, and K. Takanashi
“Magnetization reversal by spin-transfer torque in 90º configuration with a perpendicular spin polarizer.”
Appl. Phys. Lett. 89, 172504-1-3 (2006).

T. Seki,* T. Shima, K. Yakushiji, K. Takanashi, G. Q. Li, and S. Ishio
“Dot size dependence of magnetic properties in microfabricated L10-FePt (001) and L10-FePt (110) dot arrays.”
J. Appl. Phys. 100, 043915-1-8 (2006).

T. Seki,* S. Mitani, K. Yakushiji, and K. Takanashi
“Spin-polarized current-induced magnetization reversal in perpendicularly magnetized L10-FePt layers.”
Appl. Phys. Lett. 88, 172504-1-3 (2006).

T. Seki,* S. Mitani, K. Yakushiji, and K. Takanashi
“Magnetization switching in nanopillars with FePt alloys by spin-polarized current.”
J. Appl. Phys. 99, 08G521-1-3 (2006).

T. Seki,* T. Shima, K. Yakushiji, K. Takanashi, G. Q. Li, and S. Ishio
“Improvement of hard magnetic properties in microfabricated L10-FePt dot arrays upon post-annealing”
IEEE Trans. Magn., 41, 3604-3606 (2005).

T. Seki,* T. Shima, K. Takanashi, Y. Takahashi, E. Matsubara, and K. Hono
“Optimum composition for the low-temperature fabrication of highly ordered FePt (001) and FePt (110) films.”
IEEE Trans. Magn. 40, 2522-2524 (2004).

T. Seki,* T. Shima, K. Takanashi, Y. Takahashi, E. Matsubara, Y. K. Takahashi, and K. Hono
“Influence of the buffer layers on magnetic properties of FePt (001) films sputter-deposited at reduced temperature.”
J. Appl. Phys. 96, 1127-1132 (2004).

T. Seki,* T. Shima, and K. Takanashi
“Fabrication of in-plane magnetized FePt sputtered films with large uniaxial anisotropy.”
J. Magn. Magn. Mater. 272-276, 2182-2183 (2004).

T. Seki,* T. Shima, K. Takanashi, Y. Takahashi, E. Matsubara, and K. Hono
“L10 ordering of off-stoichiometric FePt (001) thin films at reduced temperature.”
Appl. Phys. Lett. 82, 2461-2463 (2003).

*Corresponding author

 

Invited Talks (International conference & WS)

T. Seki, H. Masuda, and K. Takanashi
“Large antisymmetric interlayer exchange coupling” (Oral, invited, online)
Indo-Japan Workshop on Interface Phenomena for Spintronics (IJW-IPS) 2022, (Online) 8 March, 2022.

T. Seki
“Spin-Charge Conversion in Ferromagnetic Materials” (Oral, invited, online)
Symposium on magnetism and spintronics (SMS-1) 2021, (Online) 25-27 November, 2021.

T. Seki, H. Masuda, and K. Takanashi
“Development of Cu-based Spin Hall Materials” (Oral, invited, online)
SPIE. OPTICS + PHOTONICS, Spintronics XIV (On demand) 1-5 August, 2021.

T. Seki, H. Masuda, and K. Takanashi
“Development of Cu-based Spin Hall Materials” (Oral, invited, online)
The 4th International Symposium for The Core Research Cluster for Spintronics, 25 February, 2021.

T. Seki
“Cu-based spin Hall materials -Antiferromagnetic spintronics & Non-equilibrium alloy-” (Oral, invited, online)
Webinar series on Spintronics (organized by NISER, India) 17 September, 2020.

T. Seki
“Large spin anomalous Hall effect in L10-FePt” (Oral, invited, online)
SPIE. OPTICS + PHOTONICS, Spintronics XIII, Digital Forum, 20 August, 2020.

T. Seki and K. Takanashi
“Magnetization Dynamics and Switching in Exchange-Coupled Systems” (Oral, invited, online)
International Workshop on Exchange Driven Magnetization Dynamics, organized by University of Exeter, UK, 23 July, 2020.

T. Seki and K. Takanashi
“Spin-Charge Conversion in Ferromagnets” (Oral, invited)
The 3rd Symposium for The Core Research Clusters for Materials Science and Spintronics, Sendai, Japan, 10 February, 2020.

T. Seki and K. Takanashi
“Spin-Charge Conversion in Ferromagnetic Materials” (Oral, invited)
17th RIEC International Workshop on Spintronics and 10th JSPS Core-to-Core Workshop on “New-Concept Spintronic Devices”, Sendai, Japan, 5 December, 2019.

T. Seki, R. Iguchi, K. Takanashi, and K. Uchida
“Visualization of thermo-magnetic effect in a ferromagnetic thin film” (Oral, invited)
International Conference on Magnetic Materials and Applications (ICMAGMA-2018), Bhubaneswar, India, 11 December, 2018.

T. Seki, R. Iguchi, K. Takanashi, and K. Uchida
“Anomalous Ettingshausen Effect in a Ferromagnetic FePt Thin Film” (Oral, invited)
5th International Conference of Asian Union of Magnetics Societies (IcAUMS), Jeju, Korea, 6 June, 2018.

T. Seki, R. Iguchi, K. Takanashi, and K. Uchida
“Observation of Anomalous Ettingshausen Effect in a Ferromagnetic FePt Thin Film” (Oral, invited)
Reimei/GP-Spin/ICC-IMR International Workshop "New Excitations in Spintronics”, Sendai, Japan, 10 January, 2018.

T. Seki, R. Iguchi, K. Takanashi, and K. Uchida
“Visualization of Anomalous Ettingshausen Effect in a Ferromagnetic Film” (Oral, invited)
Tohoku / York / Kaiserslautern, 6th JSPS Core-to-Core Workshop, Sendai, Japan, 15 December, 2017.

T. Seki, R. Iguchi, K. Takanashi, and K. Uchida
“Thermal Imaging of Anomalous Ettingshausen Effect in a Ferromagnetic Thin Film” (Oral, invited)
Tohoku University-KIST joint symposium, Seoul, Korea, 21 November, 2017.

T. Seki and K. Takanashi
“Spin Torque Vortex Oscillator Using Heusler Alloy Layers” (Oral, invited)
IUMRS-ICA 2017, Taipei, Taiwan, 5-9 November, 2017.

T. Seki, W. Zhou and K. Takanashi
“Magnetization Switching in Exchange-Coupled Systems” (Oral, invited)
4th International Conference of Asian Union of Magnetics Societies (ICAUMS), Tainan, Taiwan, 5 August, 2016.

T. Seki, and K. Takanashi
“Spin dynamics in ordered alloy systems and its application to spintronic devices” (Oral, invited)
The 9th Pacific Rim International Conference on Advanced Materials and Processing, Kyoto, Japan, 2 August, 2016.

T. Seki, W. Zhou and K. Takanashi
“Magnetization switching in hard magnet triggered by exchange-coupled soft magnet” (Oral, invited)
JSPS Core-to-Core Workshop on New-Concept Spintronics Devices, Sendai, Japan, 12 November, 2015.

T. Seki, and K. Takanashi
“High Power All-Metal Spin Torque Oscillators” (Oral, invited)
Indo Japan Workshop on Magnetism at Nanoscale, Bhubaneswar, India, 9 - 12 January 2015.

T. Seki, and K. Takanashi
“Magnetization switching induced by spin wave excitation” (Oral, invited)
IUMRS-ICA 2014, Fukuoka, Japan, 24 - 30 August 2014.

T. Seki
“Spin Wave Dynamics and Magnetization Switching in Exchange-Coupled Bilayers” (Oral, invited)
APS March Meeting 2014, Denver, Colorado, 3 - 7 March 2014.

T. Seki, and K. Takanashi
“Magnetization switching assisted by spin wave” (Oral, invited)
Magnetics and Optics Research International Symposium (MORIS 2013), Omiya, Japan, 2 - 5 December 2013.

T. Seki, and K. Takanashi
“Magnetization Switching Assisted by Spin Wave Excitation” (Oral, invited)
The 3rd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2013), Taichung, Taiwan, 21-25 July 2013.

T. Seki
“Magnetization switching assisted by spin wave excitation” (Oral, invited)
International Workshop on Development of Functionalized Molecule-based Magnetic Materials, Sendai, Japan, 18-21 February 2013.

T. Seki, and K. Takanashi
“Control of Magnetization Switching in Highly Coercive L10-FePt” (Oral, invited)
21st International Colloquium on Magnetic Films and Surfaces, Shanghai, China, 24-28 September 2012.

T. Seki, and K. Takanashi
“Control of Magnetization Reversal in Hard Magnetic L10-FePt” (Oral, keynote)
IUMRS-ICYRAM 2012, Singapore, Singapore, 1-6 July 2012.

T. Seki, M. Kohda, J. Nitta, and K. Takanashi
“Voltage-Induced Coercivity Change of a FePt Thin Layer in a Hall Device” (Oral, invited)
5th International Workshop on Spin Currents, Sendai, Japan, 25-28 July 2011.

T. Seki, H. Tomita, T. Yamane, A. A. Tulapurkar, M. Shiraishi, T. Shinjo, and Y. Suzuki
“Spin-transfer induced spin excitation in an antiferromagnetically-coupled nanomagnet” (Oral, invited)
4th International Symposium on Medical, Bio- and Nano-Electronics, Sendai, Japan, 6 March 2009.

T. Seki, Y. Hasegawa, S. Mitani, K. Takanashi, S. Takahashi, S. Maekawa, H. Imamura, and J. Nitta
“Giant spin Hall effect in perpendicularly spin-polarized FePt/Au devices.” (Oral, invited)
Intermag 2008, Madrid, Spain, 4-8 May 2008.

T. Seki, Y. Hasegawa, S. Mitani, S. Takahashi, H. Imamura, S. Maekawa, J. Nitta, and K. Takanashi
“Electrical detection of giant spin Hall effects in perpendicularly spin-polarized FePt/Au multi-terminal devices.” (Oral, invited)
International Workshop on Spin Currents, Sendai, Japan, 18-19 February 2008.

T. Seki, S. Mitani, K. Yakushiji, and K. Takanashi
“Current-induced magnetization reversal in FePt nanostructures.” (Oral, invited)
The 3rd Asia forum on Magnetics, Matsue, Japan, 11-14 September 2006.

T. Seki, T. Shima, K. Takanashi, Y. Takahashi, E. Matsubara, Y. K. Takahasni, and K. Hono
“Magnetic properties of FePt (001) films with a variety of buffer layers grown at reduced temperature.” (Oral, invited)
Magnetic-Optical Recording International Symposium 2004, Yokohama, Japan, 16-19 May 2004.

 

Research Fundings

2005 April - 2006 September: Research Fellowship for Young Scientists (DC2) from JSPS

2006 October - 2007 March: Research Fellowship for Young Scientists (PD) from JSPS

2008 April - 2010 March:Research Fellowship for Young Scientists (SPD) from JSPS

2010 April - 2011 March: Start-up (No.22860006) from MEXT

2011 April - 2013 March: Young Scientists (B) (No.23760659) from MEXT

2012 July - 2013 June: Research Grants from the Murata Science Foundation

2013 April - 2015 March: Challenging Exploratory Research (No.25600010) from MEXT

2013 April - 2016 March: Young Scientists (A) (No.25709056) from MEXT

2016 April - 2019 March: Scientific Research (B) (No.16H04487)

2017 April - 2019 March: Research Grants from TEPCO Memorial Foundation

2018 July - 2020 March: Grant-in-Aid for Challenging Research (Exploratory)

2020 April - : Scientific Research (A) (No.20H00299) from JSPS KAKENHI

2021 July - 2022 June: Research Grants from the Murata Science Foundation