Zobrazeno 1 - 10
of 57
pro vyhledávání: '"David D Djayaprawira"'
Autor:
H. Maehara, Alina M. Deac, Shinji Yuasa, Yoshishige Suzuki, Naoki Watanabe, K. Tsunekawa, Yoshinori Nagamine, Akio Fukushima, David D. Djayaprawira, Hitoshi Kubota
Publikováno v:
Nature Physics. 4:803-809
Spin-momentum transfer between a spin-polarized current and a ferromagnetic layer can induce steady-state magnetization precession, and has recently been proposed as a working principle for ubiquitous radio-frequency devices for radar and telecommuni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d70597bf4ad770d0c0e33af777dea9b
https://doi.org/10.1038/nphys1036
https://doi.org/10.1038/nphys1036
Autor:
Kay Yakushiji, Shinji Yuasa, David D. Djayaprawira, Akio Fukushima, Taro Nagahama, K. Ando, Yoshishige Suzuki, Hitoshi Kubota, Yoshinori Nagamine, Naoki Watanabe, H. Maehara, K. Tsunekawa
Publikováno v:
Nature Physics. 4:37-41
Quantitative measurement of voltage dependence of spin-transfer torque in MgO-based magnetic tunnel junctions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3dcaf490b7254f92db95c3e02df2712
https://doi.org/10.1038/nphys784
https://doi.org/10.1038/nphys784
Autor:
Yuichi Otani, David D. Djayaprawira, Rie Matsumoto, Shinji Yuasa, K. Tsunekawa, Yoshishige Suzuki, Masaki Mizuguchi, Shingo Nishioka, Akio Fukushima, Masashi Shiraishi, Naoki Watanabe, H. Maehara, Taro Nagahama, Hitoshi Kubota
Publikováno v:
Solid State Communications. 143:574-578
We investigated the annealing temperature dependence of differential tunneling conductance spectra ( d I / d V as a function of V ) in CoFeB/textured MgO(001)/CoFeB magnetic tunnel junctions (MTJs) that exhibit the giant tunneling magnetoresistance (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc956d765766715a910cc89fe0992c6a
https://doi.org/10.1016/j.ssc.2007.07.001
https://doi.org/10.1016/j.ssc.2007.07.001
Autor:
David D. Djayaprawira, Naoki Watanabe, Yoshinori Nagamine, Koji Tsunekawa, Young-Suk Choi, Yoshitaka Kitamoto, Takashi Takeuchi
Publikováno v:
ECS Transactions. 3:413-421
We present the influence of post-growth annealing on crystallization process of amorphous CoFeB and tunneling magnetoresistance effect in polycrystalline CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs). The crystallization of amorphous CoFeB to bcc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f61bd42f3853430c9b3978731f9ecbb
https://doi.org/10.1149/1.2753273
https://doi.org/10.1149/1.2753273
Autor:
K. Ando, Naoki Watanabe, E. Okada, H. Maehara, K. Tsunekawa, Yoshishige Suzuki, Shinji Yamagata, Shinji Yuasa, David D. Djayaprawira, Motonobu Nagai
Publikováno v:
IEEE Transactions on Magnetics. 42:103-107
Inserting a 4 /spl Aring/-Mg metal layer between the amorphous CoFeB bottom electrode layer and the MgO barrier layer was found to be effective in realizing huge magnetoresistance effect in low-resistance CoFeB/MgO/CoFeB magnetic tunnel junctions (MT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51ac1406bd70cf003eb8e158ff97a033
https://doi.org/10.1109/tmag.2005.861786
https://doi.org/10.1109/tmag.2005.861786
Autor:
Yusuke Hamada, Koji Tsunekawa, David D. Djayaprawira, Akio Fukushima, Shinji Yuasa, H. Maehara, Hitoshi Kubota, Yoshishige Suzuki, Masaki Mizuguchi, Naoki Watanabe, Taro Nagahama, Rie Matsumoto, Masashi Shiraishi, Yoshinari Kurosaki
Publikováno v:
Solid State Communications. 136:611-615
We measured differential tunneling conductance (d I /d V , d 2 I /d V 2 ) spectra of spin-valve-type magnetic tunnel junctions (MTJs) with a MgO(001) tunnel barrier layer and amorphous CoFeB ferromagnetic electrodes that show 315% magnetoresistance (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a2fc5e04c142fb1bff328cbdcaf0aa3
https://doi.org/10.1016/j.ssc.2005.08.032
https://doi.org/10.1016/j.ssc.2005.08.032
Autor:
David D. Djayaprawira, Shinji Yuasa
Publikováno v:
Materia Japan. 44:734-741
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3162331211073e3ef327f18cd69ab695
https://doi.org/10.2320/materia.44.734
https://doi.org/10.2320/materia.44.734
Publikováno v:
SHINKU. 44:631-638
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94c9b29ab7cb28ec92a76ae42ab08a74
https://doi.org/10.3131/jvsj.44.631
https://doi.org/10.3131/jvsj.44.631
Autor:
Yoshio Takahashi, Yotsuo Yahisa, Akira Ishikawa, David D Djayaprawira, Toshinori Ono, Hiroyuki Suzuki
Publikováno v:
Journal of Magnetism and Magnetic Materials. 193:59-62
Effects of Cr–N–ZrO 2 seed layer deposited on glass substrates before the deposition of C/Co–Cr–Pt/Cr–Ti layers for longitudinal recording media have been investigated. The product of v and I s , the activation volume and the saturation mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50af5e53318e2f420281550ef36edeea
https://doi.org/10.1016/s0304-8853(98)00403-x
https://doi.org/10.1016/s0304-8853(98)00403-x
Autor:
Yuichi Sasaki, Ippei Ohta, Mikihisa Mizuno, Makoto Inoue, Migaku Takahashi, David D. Djayaprawira, Andrew C. C. Yu, Hirofumi Kondo
Publikováno v:
Applied Physics Letters. 82:4352-4354
Monodispersive FePt nanoparticle films can be stabilized firmly on rigid Si substrates using amino-functional silane, such as [3-(2-aminoethlyamino) propyl]trimethoxysilane, as a coupling layer. The Si substrate/SiO2/APTS/FePt nanoparticles heterostr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ca61c90a2817c063eb9c85d8a82c9d1
https://doi.org/10.1063/1.1584791
https://doi.org/10.1063/1.1584791