Search Results - "OOGANE, M"

Magnetic tunnel junctions using perpendicularly magnetized synthetic antiferromagnetic reference layer for wide-dynamic-range magnetic sensors by Nakano, T., Oogane, M., Furuichi, T., Ando, Y.

“…We developed CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) with a perpendicularly magnetized synthetic antiferromagnetic (p-SAF) reference layer for…”
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Long-lived ultrafast spin precession in manganese alloys films with a large perpendicular magnetic anisotropy by Mizukami, S, Wu, F, Sakuma, A, Walowski, J, Watanabe, D, Kubota, T, Zhang, X, Naganuma, H, Oogane, M, Ando, Y, Miyazaki, T

“…Spin precession with frequencies up to 280 GHz is observed in Mn(3-δ)Ga alloy films with a perpendicular magnetic anisotropy constant K(u)∼15  M erg/cm(3). The…”
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Giant tunneling magnetoresistance in Co2MnSi∕Al–O∕Co2MnSi magnetic tunnel junctions by Sakuraba, Y., Hattori, M., Oogane, M., Ando, Y., Kato, H., Sakuma, A., Miyazaki, T., Kubota, H.

“…Magnetic tunnel junctions (MTJs) with a stacking structure of Co2MnSi∕Al–O∕Co2MnSi were fabricated using magnetron sputtering system. Fabricated MTJ exhibited…”
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Gilbert damping in perpendicularly magnetized Pt/Co/Pt films investigated by all-optical pump-probe technique by Mizukami, S., Sajitha, E. P., Watanabe, D., Wu, F., Miyazaki, T., Naganuma, H., Oogane, M., Ando, Y.

“…To investigate the correlation between perpendicular magnetic anisotropy and intrinsic Gilbert damping, time-resolved magneto-optical Kerr effect was measured…”
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Non-Gilbert-damping Mechanism in a Ferromagnetic Heusler Compound Probed by Nonlinear Spin Dynamics by Pirro, P, Sebastian, T, Brächer, T, Serga, A A, Kubota, T, Naganuma, H, Oogane, M, Ando, Y, Hillebrands, B

“…The nonlinear decay of propagating spin waves in the low-Gilbert-damping Heusler film Co_{2}Mn_{0.6}Fe_{0.4}Si is reported. Here, two initial magnons with…”
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Gilbert magnetic damping constant of epitaxially grown Co-based Heusler alloy thin films by Oogane, M., Kubota, T., Kota, Y., Mizukami, S., Naganuma, H., Sakuma, A., Ando, Y.

“…The magnetic damping constant in a series of Co 2 MnAl x Si 1 − x and Co 2 Fe x Mn 1 − x Si Heusler alloy epitaxial films were systematically investigated by…”
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Tunnel magnetoresistance effect and magnetic damping in half-metallic Heusler alloys by Oogane, M., Mizukami, S.

“…Some full-Heusler alloys, such as Co2MnSi and Co2MnGe, are expected to be half-metallic ferromagnetic material, which has complete spin polarization. They are…”
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Fast magnetization precession observed in L1-FePt epitaxial thin film by Mizukami, S., Iihama, S., Inami, N., Hiratsuka, T., Kim, G., Naganuma, H., Oogane, M., Ando, Y.

“…Fast magnetization precession is observed in L10-FePt alloy epitaxial thin films excited and detected by all-optical means. The precession frequency varies…”
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Low precessional damping observed for L10-ordered FePd epitaxial thin films with large perpendicular magnetic anisotropy by Iihama, S, Sakuma, A, Naganuma, H, Oogane, M, Miyazaki, T, Mizukami, S, Ando, Y

“…High-quality L10 ordered 20 nm-thick FePd epitaxial thin films with a large perpendicular magnetic anisotropy were fabricated using a SrTiO3 substrate. The…”
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Half-metal CPP GMR sensor for magnetic recording by Diao, Z., Chapline, M., Zheng, Y., Kaiser, C., Ghosh Roy, A., Chien, C.J., Shang, C., Ding, Y., Yang, C., Mauri, D., Leng, Q., Pakala, M., Oogane, M., Ando, Y.

“…Current-perpendicular-to-plane (CPP) giant magnetoresistance in magnetic CoFeMnSi Heusler alloy based spin valves and its potential application for high areal…”
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Tunnel anisotropic magnetoresistance in magnetic tunnel junctions using FeAlSi by Akamatsu, S., Nakano, T., Al-Mahdawi, Muftah, Yupeng, W., Tsunoda, M., Ando, Y., Oogane, M.

“…We fabricated magnetic tunnel junctions (MTJs) with FeAlSi free layers and investigated the tunnel magnetoresistance (TMR) properties at low temperature. We…”
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Nonquasiparticle states in Co2MnSi evidenced through magnetic tunnel junction spectroscopy measurements by Chioncel, L, Sakuraba, Y, Arrigoni, E, Katsnelson, M I, Oogane, M, Ando, Y, Miyazaki, T, Burzo, E, Lichtenstein, A I

“…We investigate the effects of electronic correlations in the full-Heusler Co2MnSi, by combining a theoretical analysis of the spin-resolved density of states…”
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Magnetic-sensor performance evaluated from magneto-conductance curve in magnetic tunnel junctions using in-plane or perpendicularly magnetized synthetic antiferromagnetic reference layers by Nakano, T., Oogane, M., Furuichi, T., Ando, Y.

“…The automotive industry requires magnetic sensors exhibiting highly linear output within a dynamic range as wide as ±1 kOe. A simple model predicts that the…”
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Highly-sensitive magnetic sensor for detecting magnetic nanoparticles based on magnetic tunnel junctions at a low static field by Jin, Z., Koo, Thomas Myeongseok, Kim, Myeong Soo, Al-Mahdawi, M., Oogane, M., Ando, Y., Kim, Young Keun

“…Magnetic sensors to detect magnetic nanoparticles (MNPs) towards biomedical applications require very high sensitivity at low magnetic fields. Here we report a…”
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Characterization of spin-transfer-torque effect induced magnetization dynamics driven by short current pulses by Meyer, T., Brächer, T., Heussner, F., Serga, A. A., Naganuma, H., Mukaiyama, K., Oogane, M., Ando, Y., Hillebrands, B., Pirro, P.

“…We present a time-resolved study of the magnetization dynamics in a microstructured Cr|Heusler|Pt waveguide driven by the spin-Hall-effect and the…”
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Direct observation of half-metallic energy gap in Co2MnSi by tunneling conductance spectroscopy by Sakuraba, Y., Miyakoshi, T., Oogane, M., Ando, Y., Sakuma, A., Miyazaki, T., Kubota, H.

“…Magnetic tunnel junctions with a Co2MnSi∕Al–O∕CoFe structure are prepared by magnetron sputtering and investigated with respect to the energy gap near the…”
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Spin-dependent tunneling spectroscopy in single-crystal Fe∕MgO∕Fe tunnel junctions by Ando, Y., Miyakoshi, T., Oogane, M., Miyazaki, T., Kubota, H., Ando, K., Yuasa, S.

“…We report a detailed spin-dependent tunneling spectroscopy in single-crystal Fe(001)∕MgO(001)∕Fe(001) magnetic tunnel junctions (MTJs) that show a giant tunnel…”
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Preparation of monoclinic 0.9(BiFeO3)–0.1(BiCoO3) epitaxial films on orthorhombic YAlO3 (100) substrates by r.f. magnetron sputtering by Ichinose, T., Naganuma, H., Mukaiyama, K., Oogane, M., Ando, Y.

“…0.9BiFeO3–0.1BiCoO3 (BFCO) films (t=100nm) were prepared on orthorhombic YAlO3 (YAO) (100) substrates by r.f. magnetron sputtering. Film flatness,…”
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Effect of annealing on Curie temperature and phase transition in La0.55Sr0.08Mn0.37O3 epitaxial films grown on SrTiO3 (100) substrates by reactive radio frequency magnetron sputtering by Ichinose, T., Naganuma, H., Miyazaki, T., Oogane, M., Ando, Y., Ueno, T., Inami, N., Ono, K.

“…Mn-poor LaSrMnO3 (LSMO) epitaxial films were grown on SrTiO3 (100) substrates by radio frequency magnetron sputtering in an argon and oxygen gas mix, and then…”
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Ultrafast magnetization dynamics in Co-based Heusler compounds with tuned chemical ordering by Steil, D, Schmitt, O, Fetzer, R, Kubota, T, Naganuma, H, Oogane, M, Ando, Y, K Suszka, A, Idigoras, O, Wolf, G, Hillebrands, B, Berger, A, Aeschlimann, M, Cinchetti, M

“…We have studied thin film samples of FeSi and MnSi with different degrees of chemical ordering using the time-resolved magneto-optical Kerr effect to elucidate…”
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