Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Akemi Hirotsune"'
Autor:
Bruce D. Terris, Jordan A. Katine, Elizabeth A. Dobisz, Thomas Dudley Boone, Dan S. Kercher, Hiroaki Nemoto, Neil Leslie Robertson, Vijay Prakash Singh Rawat, Akemi Hirotsune, Hamid Balamane, Chie C. Poon, Olav Hellwig, Jui-Lung Li, Ricardo Ruiz, Thomas R. Albrecht, Timothy C. Strand, Barry Cushing Stipe
Publikováno v:
Nature Photonics. 4:484-488
A recording density of 1.5 Pb m−2 using heat-assisted magnetic recording in a bit-patterned media is demonstrated. This represents a dramatic improvement in track width and optical efficiency over continuous media, owing largely to advantageous nea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb851e9b3b185e9225c5991a301e7f4f
https://doi.org/10.1038/nphoton.2010.90
https://doi.org/10.1038/nphoton.2010.90
Autor:
Harukazu Miyamoto, Junko Ushiyama, Yumiko Anzai, Sugiyama Toshinori, Tsuyoshi Onuma, Akemi Hirotsune, Yasushi Miyauchi, Nobumasa Endo, Toshimichi Shintani, Takahiro Kurokawa
Publikováno v:
Japanese Journal of Applied Physics. 47:5918-5922
To reduce interlayer crosstalk caused by the ghost spot which appears in a multilayer optical disk with more than three information layers, a multilayer disk structure which reduces interlayer crosstalk with a wide disk-fabrication margin was propose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce5627677106fba7792362e4f67242db
https://doi.org/10.1143/jjap.47.5918
https://doi.org/10.1143/jjap.47.5918
Autor:
Nobuhiro Tokushuku, Akemi Hirotsune, Miyamoto Makoto, Motoyasu Terao, Yasushi Miyauchi, Reiji Tamura
Publikováno v:
Japanese Journal of Applied Physics. 46:7749-7754
To obtain minimum overwrite jitter after 104 overwrites, the cause of degradation of readout waveforms after 104 overwrites was investigated by transmittance electron microscopy (TEM). To decrease the temperature of the recording film at the track ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08156137874f70bb16cf722da79acc19
https://doi.org/10.1143/jjap.46.7749
https://doi.org/10.1143/jjap.46.7749
Autor:
Reiji Tamura, Nobuhiro Tokushuku, Miyamoto Makoto, Yasushi Miyauchi, Motoyasu Terao, Akemi Hirotsune
Publikováno v:
Japanese Journal of Applied Physics. 46:6652-6657
A Ag–Ge–Sb–Te recording film was developed, and its chemical composition was optimized to minumize overwrite jitter. The cause of the jitter was investigated by measuring the crystallization ratios and by transmission electron microscopy. It wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ea8852dc86086f4acaf500d9633c07d
https://doi.org/10.1143/jjap.46.6652
https://doi.org/10.1143/jjap.46.6652
Autor:
Akemi Hirotsune, Harukazu Miyamoto, Hiromi Kudo, Maeda Takeshi, Toshimichi Shintani, Hiroyuki Minemura, Junko Ushiyama, Yumiko Anzai
Publikováno v:
Japanese Journal of Applied Physics. 45:2593-2597
To realize optical discs with the sub-terabyte data capacity, we propose the three-dimensional pit selection (3DPS) method where a single data pit to be read out in a multi-layer disc is selected three-dimensionally to obtain super-resolution in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad7392206297262550250cb157bbde2e
https://doi.org/10.1143/jjap.45.2593
https://doi.org/10.1143/jjap.45.2593
Publikováno v:
Japanese Journal of Applied Physics. 45:1235-1238
We have introduced a tungsten oxide film to a layer-selection-type recordable optical disk (LS-R) as an inorganic electrochromic (EC) film. The EC film showed a large transmittance change in a wide wavelength range. Layer selection was demonstrated w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95a41190e0272ff277696485eb15f7f0
https://doi.org/10.1143/jjap.45.1235
https://doi.org/10.1143/jjap.45.1235
Autor:
Akemi Hirotsune, Keikichi Andoo, Motoyasu Terao, Toshimichi Shintani, Maeda Takeshi, Harukazu Miyamoto, Yumiko Anzai, Tetsuo Ariyoshi
Publikováno v:
Japanese Journal of Applied Physics. 42:5624-5633
The signals obtained from dual-layer optical disks were analyzed experimentally and theoretically with emphasis on reducing layer cross talk (LCT) and spherical aberration (SA). Using the dual-layer phase change optical disk, the DC element of the LC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0de372a21fa357c34c27acf504b1baa
https://doi.org/10.1143/jjap.42.5624
https://doi.org/10.1143/jjap.42.5624
Autor:
Akemi Hirotsune, Ikuko Takekuma, Takayuki Ichihara, Hiroaki Nemoto, B. C. Stipe, Kimio Nakamura
Publikováno v:
IEEE Transactions on Magnetics. 46:1569-1571
The effect of the magnetic and structural properties on recording performance was investigated. Well grain-isolated media were obtained by adding boron and oxygen into the [Co/Pd]n multilayer and cooling the substrate. We found that the recorded bit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cf4ba7cd7ff5398479812762436b651
https://doi.org/10.1109/tmag.2009.2039118
https://doi.org/10.1109/tmag.2009.2039118
Autor:
Sumio Hosaka, Akemi Hirotsune, Mitsuhide Miyamoto, Motoyasu Terao, Atsushi Kikukawa, Masaru Yoshida, Stefan B. Kämmer, Kouichi Fujita, Toshimichi Shintani
Publikováno v:
Journal of Applied Physics. 79:8082-8086
The formation and observation, with reflected light, of 60‐nm‐diam phase‐changed domains in a thin GeSbTe film using a scanning near‐field optical microscope with a 785 nm wavelength laser diode is demonstrated. The dependence of the domain s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef52909043fdc1a7286707d6945fab00
https://doi.org/10.1063/1.362363
https://doi.org/10.1063/1.362363
Autor:
Stefan B. Kämmer, S. Honma, Toshimichi Shintani, Masaru Yoshida, Sumio Hosaka, Akemi Hirotsune, Motoyasu Terao, Mitsuhide Miyamoto
Publikováno v:
Thin Solid Films. 273:122-127
We demonstrate 80 nm diameter bit recording for the first time using a phase change recording film and a reflection scanning near-field optical microscope with a 785 nm wavelength laser diode. The sample structure was a 20 nm thick ZnS-SiO 2 protecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::264c2925a0b843d1587f709ec6edbf32
https://doi.org/10.1016/0040-6090(95)06803-1
https://doi.org/10.1016/0040-6090(95)06803-1