Publications

Y2015

Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth.

Y. Nozaki, S.D. Watanabe, T. Kobayashi, and T. Tanazawa Appl. Phys. Express, 8, 043001 (4 pages) (2015).

Cooperative microwave-assisted magnetization reversal with pulsed fields in 2-μm-wide nickel-iron wires at nanosecond time scales.

G. Okano and Y. Nozaki Appl. Phys. Express, 8, 013001 (4 pages) (2015).

Crystallographic anisotropy of intrinsic Gilbert damping for single crystalline Fe film.

Y. Kasatani and Y. Nozaki J. Magn. Soc. Jpn., submitted.

Nonadiabatic spin-transfer torque evaluated from resonance spectra of controlled motion of a magnetic vortex.

M. Goto, K. Sekiguchi, and Y. Nozaki Jpn. J. Appl. Phys., submitted.

Y2014

Coupled oscillations of vortex cores confined in a ferromagnetic elliptical disk.

H. Hata, M. Goto, A. Yamaguchi, T. Sato, Y. Nakatani, and Y. Nozaki Phys. Rev. B, 90, 104418 (14 pages) (2014).

Large anisotropy of Gilbert damping constant in L21-ordered Co2FeSi flms.

Y. Kasatani, S. Yamada, H. Itoh, M. Miyao, K. Hamaya, and Y. Nozaki Appl. Phys. Express, 7, 123001 (4 pages) (2014).

Cooperative microwave-assisted magnetization reversal with pulsed fields in 2-μm-wide nickel-iron wires at nanosecond time scales.

G. Okano and Y. Nozaki Appl. Phys. Express, 8, 013001 (4 pages) (2015).

Microwave-Assisted Magnetization Reversal of Exchange-Coupled Composite Nanopillar With Large Gilbert Damping Constant.

T. Tanaka, S. Kashiwagi, Y. Otsuka, Y. Nozaki, Y. Hong, and K. Matsuyama IEEE Trans. Magn., 50, 300503 (4 pages) (2014).

Criteria for Electric Determination of Antivortex Creation in Ferromagnetic Thin Film.

M. Goto, Y. Nozaki, and K. Sekiguchi Jpn. J. Appl. Phys., 54, 023001 (4 pages) (2014).

Y2013

Characteristic field angular dependence of magnetization switching assisted by spin wave excitation .

T. Seki, K. Hotta, H. Imamura, Y. Nozaki, and K. Takanashi Appl. Phys. Lett., 103, 122403 (4 pages) (2013).

Frequency dependence of critical switching asteroid of CoCrPt-SiO2 granular film under 50-ns microwave impulse.

N. Ishida, Y. Soeno, K. Sekiguchi, and Y. Nozaki J. Appl. Phys., 114, 043915 (5 pages) (2013).

Excitation of Continuous Magnetostatic Surface Spin Wave in Ferromagnetic Thin Films.

N. Sato, K. Sekiguchi, and Y. Nozaki, J. Magn. Soc. Jpn., 37, pp.214-217 (2013).

Electrical Demonstration of Spin Wave Logic Operation.

nominated as "Research Highlights" of APEX

N. Sato, K. Sekiguchi, and Y. Nozaki, Appl. Phys. Express, 6, 063001(3 pages) (2013).

Spin Wave Assisted Reduction in Switching Field of Highly Coercive Iron-Platinum Magnets.

T. Seki, K. Utsumiya , Y. Nozaki , H. Imamura , and K. Takanashi , Nature Communications, 4, 2737(** pages) (2013).

Selective Magnetization Switching with Microwave Assistance for Three-Dimensional Magnetic Recording.

T. Tanaka, Y. Otsuka , Y. Furomoto , K. Matsuyama, and Y. Nozaki, J. Appl. Phys., 113, 143908(6 pages) (2013).

Spin torques due to diffusive spin current in magnetic texture.

K. Hosono, J. Shibata, H. Kohno, and Y. Nozaki, Phys. Rev. B, 87, 094404(8 pages) (2013).

Micromagnetic Study of Microwave-Assisted Magnetization Reversals of Exchange-Coupled Composite Nanopillars

T. Tanaka, N. Narita, A. Kato, Y. Nozaki, Y.-K. Hong, and K. Matsuyama, IEEE Trans. Magn., 49, pp.562-566 (2013).

Y2012

Ferromagnetic resonance properties of granular Co-Cr-Pt films measured by micro-fabricated coplanar waveguides

T. Kobayashi, N. Ishida, K. Sekiguchi, and Y. Nozaki, J. Appl. Phys., 111, 07B919 (2011).

Room temperature microwave-assisted recording on 500-Gbpsi-class perpendicular medium.

nominated as "Research Highlights" of JAP

Y. Nozaki, N. Ishida, Y. Soeno, and K. Sekiguchi J. Appl. Phys., 112, 083912 (2012).

Progress in time-resolved photoemission electron microscopy (PEEM) at BL25SU, SPring-8 -Ac field excitation of magnetic vortex core gyration-

T. Ohkochi, A. Yamaguchi, M. Kotsugi, H. Hata, M. Goto, Y. Nozaki, T. Nakamura, H. Osawa, and T. Kinoshita Jpn. J. Appl. Phys., 51, 128001 (2012).

Y2011 and before

Electric spectroscopy of vortex states and dynamics in magnetic disks.

nominated as "Editor's Selections" of PRB

M. Goto, H. Hata, A. Yamaguchi,Y. Nakatani, T. Yamaoka, Y. Nozaki, and H. Miyajiama Phys. Rev. B, 84, 064406 (2011).

Micromagnetic study on microwave-assisted magnetic recording in perpendicular medium with intergrain exchange coupling.

nominated as "Research Highlights" of JAP

Y. Nozaki, A. Kato, K. Noda, Y. Kanai, T. Tanaka, K. Matsuyama, J. Appl. Phys., 109, 123912 (2011).

Microscopic Theory of diffusive spin current with spin-orbit interaction

K. Hosono, A. Yamaguchi, Y. Nozaki, and G. Tatara, Phys. Rev. B, 83, 144428 (2011).
Spin current driven by thermal gradient

K. Hosono, A. Yamaguchi, Y. Nozaki, and G. Tatara, AIP Conference Proceeding Series, 1399, 731 (2011).
Time evolution of spin accumulation induced from electric field in ferromagnet

K. Hosono, Y. Nozaki, A. Yamaguchi, and G. Tatara, J. Appl. Phys., 109, 07C901 (2011).

Electrical detection of vortex states in a ferromagnetic disk using the rectifying effect

M. Goto, H. Hata, Yamaguchi, Y. Nakatani, T. Yamaoka, and Y. Nozaki, J. Appl. Phys., 109, 07D306 (2011).

Detection of ferromagnetic resonance in a single-crystalline Fe wire using a rectifying effect

Y. Kasatani, A. Yamaguchi, H. Miyajima, and Y. Nozaki, J. Phys.: Conf. Ser., 266, 012013 (2011).

Detection of vortex-core dynamics using current-induced self-bistable rectifying effect

M. Goto, H. Hata, A. Yamaguchi, H. Miyajima, Y. Nakatani, T. Yamaoka, and Y. Nozaki, J. Phys.: Conf. Ser., 266, 012080 (2011).

Fourfold in-plane magnetic anisotropy in sputtered (100) MgO/Fe epitaxial films

K. Noda, M. Higuchi, Y. Komaki, T. Tanaka, Y. Nozaki, and K. Matsuyama, J. Phys.: Conf. Ser., 266, 012014 (2011).

Numerical Study on Inductive Detection of Magnetostatic Spin Wave Packet

Y. Nakashima, K. Nagai, T. Tanaka, K. Matsuyama, and Y. Nozaki, Proc. IEEE TENCON 2010, pp.1894-1897 (2010).

Dependence of Magnetization Switching Property with Microwave Assistance on Anisotropy Field for ECC Nano-pillar

N. Narita, T. Tanaka, A. Kato, Y. Nozaki, and K. Matsuyama, Proc. IEEE TENCON 2010, pp.1898-1901 (2010).

Asymmetric Domain Wall Propagation in a Giant Magnetoresistance-Type Wire with Oscillating Interlayer Exchange Coupling

A. Yamaguchi, T. Kishimoto and H. Miyajima, Appl. Phys. Exp., 3, 093004 (2010).

Noise Characterization of Coil Detection Type Magnetic Field Sensor Utilizing Pulse Excitation Amorphous Wire Magneto-Impedance Element

T. Uchiyama, A. Yamaguchi and Y. Utsumi J. Magn. Soc. Jpn., 34, 533 (2010).

Magnetization reversal and wall propagation velocity in single-crystalline and polycrystalline Fe wires

Y. Kasatani, A. Yamaguchi, H. Yamamoto and H. Miyajima, Phys. Rev. B, 81, 224425 (2010).

Presentations

Y2015

Dynamic magnetization reversal in NiFe wires with assistance of microwave impulse combined with 100-picosecond pulsed field.

G. Okano and Y. Nozaki, 20th International Conference on Magnetism, ICM 2015, submited, Barcelona (Spain) , Jul. 5-10, 2015.

Experiment on spin current assisted magnetization reversal using spin pumping effect.

M. Takahashi and Y. Nozaki, 20th International Conference on Magnetism, ICM 2015, submited, Barcelona (Spain) , Jul. 5-10, 2015.

Atomic composition dependence of microwave-assisted magnetization reversal in CoCrPt-based perpendicular media.

Y. Nozaki and T. Tanaka, 20th International Conference on Magnetism, ICM 2015, submited, Barcelona (Spain) , Jul. 5-10, 2015.

Y2014

Experimental study on switching time of microwave-assisted magnetization reversal in 2 μm wide NiFe wires.

G. Okano and Y. Nozaki, 59th Annual Magnetism and Magnetic Materials Conference, BP-13, Honolulu (USA), Nov. 3-7, 2014.

Stochastic magnetization process of antivortex formation in X-shaped cross wire investigated by magnetoresistance measurement and magnetic force microscopy.

M. Goto, T. Tanazawa, K. Sekiguchi, and Y. Nozaki, 59th Annual Magnetism and Magnetic Materials Conference, GW-05, Honolulu (USA), Nov. 3-7, 2014.

Modulation of Gilbert damping caused by absorbing a pure spin current in lateral spin-valve structures

S. Watanabe, T. Tanazawa, T. Kobayashi, and Y. Nozaki, IEEE International Conference on Microwave Magnetics 2014, Sendai (Japan), Jun. 29 - Jul. 2, 2014.

Y2013

Composition dependence of the intrinsic Gilbert damping of Co3-xFexSi Heusler alloy films.

Y. Kasatani, S. Yamada, H. Itoh, M. Miyao, K. Hamaya and Y. Nozaki, The 8th International Symposium on Metallic Multilayers (MML2013), ***, Kyoto (Japan), May 20-24, 2013.

Y2012

Pulse duration dependence of microwave-assisted magnetization reversal in CoCrPt-based granular medium.

Y. Nozaki, N. Ishida, Y. Soeno, and K. Sekiguchi, 12th Joint MMM-Intermag conference, CB-08, Cicago (USA), Jan. 14-18, 2013.

Analytical study of phase and amplitude of vortex gyration using a microwave spectroscopy.

M. Goto, K. Sekiguchi, and Y. Nozaki, 12th Joint MMM-Intermag conference, GP-01, Cicago (USA), Jan. 14-18, 2013.

Microwave-power dependence of switching field required for MAMR in CoCrPt-SiO2 perpendicular medium.

N. Ishida, Y. Soeno, K. Sekiguchi, and Y. Nozaki, ICAUMS 2012, 3pA-4, Nara (Japan), Oct. 2-5, 2012.

Spin wave-assisted magnetization switching.

T. Seki, K. Utsunomiya, Y. Nozaki, H. Imamura, and K. Takanashi, ICAUMS 2012, 3aE-3, Nara (Japan), Oct. 2-5, 2012.

Monochromatic spatiotemporal stable magnetostatic surface spin wave in a ferromagnetic thin film.

N. Sato, K. Sekiguchi, and Y. Nozaki, ICAUMS 2012, 2pPS-1, Nara (Japan), Oct. 2-5, 2012.

Quantitative analysis of spin torque effect in the magnetic vortex structure.

M. Goto, K. Sekiguchi, and Y. Nozaki, ICAUMS 2012, 2pPS-8, Nara (Japan), Oct. 2-5, 2012.
Spin torque induced from diffusive spin current.

K. Hosono, J. Shibata, H. Kohno, and Y. Nozaki, Intermag 2012, HD-06, Vancouver (Canada), May 7-11, 2012.

Theoretical study on ferromagnetic resonance of FePt/Py bilayers.

H. Imamura, T. Seki, K. Utsunomiya, Y. Nozaki, and K. Takanashi, ICM 2012, JG03, Busan (Korea), Jul. 8-13, 2012.

Selective magnetization switching by microwave assistance for layered magnetic pillar.

T. Tanaka, Y. Otsuka, Y. Furumoto, K. Matsuyama, and Y. Nozaki, ICM 2012, QP09, Busan (Korea), Jul. 8-13, 2012.

Composition dependence of the Gilbert damping constant for Co-based Heusler alloy.

Y. Kasatani, S. Yamada, M. Miyao, K. Hamaya, H. Ito, and Y. Nozaki, ICM 2012, RK10, Busan (Korea), Jul. 8-13, 2012.

Investigation of spin wave interference circuit with metallic thin film.

N. Sato, K. Sekiguchi, and Y. Nozaki, ICM 2012, SI08, Busan (Korea), Jul. 8-13, 2012.

Selective magnetization switching with microwave assistance for 3 dimensional magnetic recording.

T. Tanaka，Y. Otsuka, Y. Furumoto, K. Matsuyama, and Y. Nozaki, Intermag 2012, CC-09, Vancouver (Canada), May 7-11, 2012.

Experimental study on microwave-assisted writing of 500 Gbpsi-class perpendicular medium.

N. Ishida, Y. Soeno, K. Sekiguchi, and Y. Nozaki, Intermag 2012, CC-10, Vancouver (Canada), May 7-11, 2012.

Modulation of resonant frequency of perpendicular standing spin waves in multilayered ferromagnetic wires.

Y. Kasatani, A. Yamaguchi, K. Sekiguchi, and Y. Nozaki, Intermag 2012, CE-02, Vancouver (Canada), May 7-11, 2012.

Spin torque analysys from trajectory of magnetic vortex-core observed using time-resolved photoemission electron microscope technique.

M. Kodama, H. Hata, Y. Kasatani, K. Sekiguchi, A. Yamaguchi, T. Ohkochi, M. Kotsugi, T. Kinoshita, and Y. Nozaki, Intermag 2012, CQ-03, Vancouver (Canada), May 7-11, 2012.

Y2011 and before

Ferromagnetic resonance properties of granular Co-Cr-Pt films measured using micro-fabricated coplanar waveguides.

T. Kobayashi，N. Ishida and Y. Nozaki, The 56th Magnetism and Magnetic Materials Conference, DQ-15, Scottsdale (USA), Oct. 30-Nov. 3, 2011.

Microscopic theory of diffusive spin current

K. Hosono，A. Yamaguchi and Y. Nozaki, SPINTECH 6, WP-60, Matsue (Japan), 2011.

Crystalline axis dependence of the Gilbert damping factor for Heusler alloy films

Y. Kasatani，N. Sato, S. Yamada, M. Miyao, K. Hamaya and Y. Nozaki, SPINTECH 6, FP-10, Matsue (Japan), 2011.

Measurement of complex susceptibility using vector network analyzer FMR spectroscopy

T. Kobayashi，H. Ueda, A. Yamaguchi and Y. Nozaki, SPINTECH 6, FP-64, Matsue (Japan), 2011.
Domain wall pinning effect using a spatial modulation of interlayer exchange coupling

T. Kawakami, A. Yamaguchi and Y. Nozaki, SPINTECH 6, FP-65, Matsue (Japan), 2011.

Ferromagnetic resonance measurement of Co/Ni perpendicular magnetized multilayers

S. Kanda，H. Ueda, T. Kobayashi, A. Yamaguchi and Y. Nozaki, SPINTECH 6, FP-66, Matsue (Japan), 2011.

Study on magnetization dynamics induced by current and field in a magnetic wire using rectifying effect

A. Yamaguchi，Y. Nozaki and H. Miyajima, SPINTECH 6, FP-75, Matsue (Japan), 2011.

Inductive detection of resonant motion of vortices in single Fe₁₉Ni₈₁ ellipsoidal disk fabricated on a coplanar waveguide

H. Hata, M. Kodama, M. Goto, A. Yamaguchi and Y. Nozaki, SPINTECH 6, FP-80, Matsue (Japan), 2011.

Microwave-assisted magnetization reversal characteristics for ECC nano-pillar

T. Tanaka，N. Narita, A. Kato, Y. Nozaki and K. Matsuyama, J-MRS , Yokohama (Japan), Dec. 21, 2010.

Magnetic domain wall displacement in a multilayered wire with quantum interference

A. Yamaguchi, T. Kishimoto, Y. Nozaki and H. Miyajima, MMM 2010, GP-15, Atlanta (USA), Nov. 2010.

Electrical detection of vortex states in a ferromagnetic disk through the rectifying effect

M. Goto, H. Hata, A. Yamaguchi, Y. Nakatani, T. Yamaoka and Y. Nozaki, MMM 2010, EP-06, Atlanta (USA), Nov. 2010.

Resonance modes of a pair of magnetic vortices in micron scale Fe₁₉Ni₈₁ ellipsoid

H. Hata, M. Goto, A. Yamaguchi and Y. Nozazki, MMM 2010, EP-02, Atlanta (USA), Nov. 2010.
Microscopic theory of diffusive spin current caused by spin Hall effect

K. Hosono, A. Yamaguchi, Y. Nozazki and G. Tatara, MMM 2010, BV-03, Atlanta (USA), Nov. 2010.
Spin wave damping in confined micron-scale ferromagnets

A. Yamaguchi, Y. Kasatani, Y. Nozaki, T. Uchiyama and Y. Utsumi, MMM 2010, AP-03, Atlanta (USA), Nov. 2010.

Track density capability of microwave assisted magnetic recording

A. Kato, N. Narita,T. Tanaka, Y. Nozaki, Y. Kanai, Y. Hong and K. Matsuyama, MMM 2010, Atlanta (USA), Nov. 2010.

MAMR dependence on anisotropy field for ECC structured nano-pillar

N. Narita, A. Kato, T. Tanaka, Y. Nozaki, Y. Kanai, Y. Hong and K. Matsuyama, MMM 2010, Atlanta (USA), Nov. 2010.

Broadband Ferromagnetic Resonance Of Iron Wires Using Rectifying Effect

Y. Kasatani, A. Yamaguchi and H. Miyajima, MML2010, Tu-34, 2010.
Detection And Modulation Of High-Order Spin Waves Using Rectifying Effect

A. Yamaguchi, K. Motoi, H. Miyajima, T. Uchiyama and Y. Utsumi, MML2010, We-15, 2010.
Ferromagnetic Resonance in a single-crystalline Fe wire and a polycrystalline Fe wire

Y. Kasatani, A. Yamaguchi and H. Miyajima, ISAMMA2010, PA-06, 2010.
Detection of vortex-core dynamics using current-induced self-bistable rectifying effect

M. Goto, H. Hata, A. Yamaguchi, H. Miyajima and Y. Nakatani, ISAMMA2010, AY-07, 2010.
Domain wall propagation in single crystalline iron wires

A. Yamaguchi, Y. Kasatani and H. Miyajima, ISAMMA2010, BY-04, 2010.

Micromagnetic Study on Microwave-Assisted Magnetic Recording in Perpendicular Medium with Intergrain Exchnage Coupling (Invited)

Y. Nozaki, A. Kato, K. Noda, Y. Kanai, T. Tanaka and K. Matsuyama, ISAMMA2010, 2010.

Dependence of MAMR on damping constanct for ECC nano-pillar

N. Narita, T. Tanaka, K. Noda, Y. Nozaki and K. Matsuyama, ISAMMA2010, 2010.

Publications

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