Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Shigeru Tsunashima"'
Autor:
Daiki Oshima, Satoshi Iwata, Tetsuya Nakamura, Takeshi Kato, Yuji Fujiwara, Y. Kotani, Masahiro Tanimoto, Shigeru Tsunashima
Publikováno v:
IEEE Transactions on Magnetics. 52:1-4
The ion irradiation-induced magnetic transition of $L1_{0}$ -MnGa alloy films was studied in detail by measuring X-ray magnetic circular dichroism (XMCD) and the temperature dependence of their hysteresis loops. The XMCD of (001)-oriented MnGa films
Autor:
Satoshi Iwata, Shigeru Tsunashima, Yuji Fujiwara, Tetsuya Nakamura, Masahiro Tanimoto, Daiki Oshima, Takeshi Kato, Yoshinori Kotani
Publikováno v:
IEEE Transactions on Magnetics. 50:1-7
$L1 0 phase MnGa and MnAl films with (001) orientation were fabricated by magnetron sputtering. Both films were confirmed to exhibit high perpendicular magnetic anisotropies of 7-8× 10 6 erg/cc and magnetizations of ~450 emu/cc. For the MnGa film, a
Publikováno v:
Journal of the Magnetics Society of Japan. 38:123-126
Publikováno v:
IEEE Transactions on Magnetics. 49:3608-3611
(001) oriented L10 phase MnGa films were grown on Cr (20 nm)/MgO(001) substrate, and Kr+ ion irradiation on the MnGa films was carried out to control their magnetic properties. Highly ordered MnGa films were obtained at a relatively low temperature o
Publikováno v:
IEEE Transactions on Magnetics. 49:4359-4362
Amorphous GdFeCo with various Gd compositions used as memory layers in giant magneto-resistance (GMR) devices were prepared by magnetron sputtering and subsequent micro-fabrication processes, and their magnetic properties and spin transfer torque (ST
Publikováno v:
IEEE Transactions on Magnetics. 48:3406-3409
Mn54Bi24Cu21 (15 nm) films with a perpendicular anisotropy were prepared by annealing the sputtered MnCu/Bi multilayer at a temperature of 350 °C. The MnBiCu film had a rather flat surface of Ra = 1.1 nm, and uniform maze domain was observed before
Publikováno v:
IEEE Transactions on Magnetics. 48:3223-3226
Giant magneto resistance (GMR) devices having amorphous GdFeCo memory layers with various Gd compositions were prepared by magnetron sputtering and subsequent micro-fabrication processes, and their spin transfer torque (STT) switching was investigate
Autor:
Satoshi Okamoto, Nobuaki Kikuchi, Satoshi Iwata, S. Kashima, Osamu Kitakami, Shigeru Tsunashima, Y. Matsumoto, Takeshi Kato
Publikováno v:
IEEE Transactions on Magnetics. 48:3288-3291
Gilbert damping constants α of Co/Pd multilayers with various layered structures were estimated by time resolved magneto-optical Kerr effect. The [Co(tCo)/Pd(tPd)]6 multilayers exhibiting a perpendicular magnetic anisotropy (PMA) were prepared by dc
Autor:
Norihiko Nishizawa, Satoshi Iwata, Y. Matsumoto, Takeshi Kato, Osamu Kitakami, Satoshi Okamoto, Nobuaki Kikuchi, Shigeru Tsunashima
Publikováno v:
IEEE Transactions on Magnetics. 47:3036-3039
Co/Ni multilayers with a stack of Ta (2 nm)/[Co (tCo)/Ni (tNi)] N/Ta (30 nm) were prepared by dc magnetron sputtering, and their magnetization dynamics were measured by time-resolved magneto-optical Kerr effect (TRMOKE). The total thickness of the mu
Publikováno v:
IEEE Transactions on Magnetics. 46:1671-1674
SiO2(2 nm)/Cr25Pt75(15 nm) and SiO2(2 nm)/Cr25Pt75(15 nm)/SiO2(10, 20 nm)/Co80Zr10Nb10 (10 nm) were prepared by magnetron sputtering method and post-annealed by rapid thermal annealing (RTA) at temperatures of 600°C-1000°C for 1-60 sec. The saturat