Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Fumihiko Toda"'
Autor:
Toshiharu Marui, Masanori Itoh, Yoshiaki Sano, Hideyuki Okita, Fumihiko Toda, Yoshiaki Morino, Isao Tamai, Shinichi Hoshi, Shouhei Seki
Publikováno v:
IEICE Transactions on Electronics. :686-690
Current collapse phenomenon is a well known obstacle in the AlGaN/GaN HEMTs. In order to improve the surface stability of HEMTs, we have investigated the SiN passivation film deposited by T-CVD, and we found that it improves both gate leakage current
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53c97bda5b775211e14a5768abbcea07
https://doi.org/10.1587/transele.e92.c.686
https://doi.org/10.1587/transele.e92.c.686
Autor:
Shouhei Seki, Masanori Itoh, Fumihiko Toda, Toshiharu Marui, Hideyuki Okita, Isao Tamai, Yoshiaki Sano, Shinichi Hoshi
Publikováno v:
IEICE Transactions on Electronics. :1009-1014
In AlGaN/GaN high electron mobility transistors (HEMTs), drain current reduction by current collapse phenomenon is a big obstacle for a high efficient operation of power amplifier application. In this study, we investigated the effects of SiN passiva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c8f6f066fbe29f9ea75ae25fb66b534
https://doi.org/10.1093/ietele/e91-c.7.1009
https://doi.org/10.1093/ietele/e91-c.7.1009
Publikováno v:
SHINKU. 41:328-331
We prepared the BaRbBiO (BRBO) thin films by rf magnetron sputtering using He + O2 gas (He =80%) at the substrate temperatures (Tsub) from room temperature (RT) to 450°C. Within the temperature range of our preparation conditions, all the elements i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55c458b9159bf80ed7333d767d86489d
https://doi.org/10.3131/jvsj.41.328
https://doi.org/10.3131/jvsj.41.328
Publikováno v:
Journal of Applied Physics. 74:5090-5095
We have focused our attention on the dependence of Ba1−xRbxBiO3 (BRBO) film composition ratio and film properties on rubidium‐beam‐flux intensity. BRBO films were deposited on MgO(100) substrates by molecular‐beam epitaxy (MBE) using distille
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43cacb5cdeb9224b2eab0ea48cc36eba
https://doi.org/10.1063/1.354294
https://doi.org/10.1063/1.354294
Publikováno v:
Applied Surface Science. :729-735
Si(100) substrates with Ag, Au, Bi and Ba ultratin overlayers were heated in distilled ozone atmospheres. It was found that Ag, Au, Bi and Ba atoms remained on the Si(100) surfaces at substrate temperatures T s ≲ 550, 780, 300 and 650°C, respectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43260c0d8c9b55fdfd56e66624f7d43e
https://doi.org/10.1016/0169-4332(92)90504-q
https://doi.org/10.1016/0169-4332(92)90504-q
Autor:
Hiroyuki Naoe, Yuzuru Mitani, Satoru Kishida, Toshiyuki Kitagawa, Fumihiko Toda, Heizo Tokutaka
Publikováno v:
SHINKU. 42:365-367
We prepared the Ba1-xRbxBiOy (BRBO) thin films by rf magnetron sputtering using He+ O2 gas (He = 80%). The XPS results indicated that the BRBO thin films contained Ba, Rb, Bi and O. From the X-ray diffraction patterns and R-T characteristics of the B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9b20ff77051011515da4bec9827f568
https://doi.org/10.3131/jvsj.42.365
https://doi.org/10.3131/jvsj.42.365
Autor:
Hiroyuki Naoe, Heizo Tokutaka, Fumihiko Toda, Toshiyuki Kitagawa, Yuzuru Mitani, Satoru Kishida
Publikováno v:
Advances in Superconductivity XI ISBN: 9784431668763
We prepared the Ba1-xRbxBiOy (BRBO) thin films on a MgO(100) substrate by rf magnetron sputtering method using a mixture gas of He and O2, and an off-axis geometry, where the substrate was located perpendicular to targets. From the results, we found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d67f2c876953058d4e86abc2f575e83f
https://doi.org/10.1007/978-4-431-66874-9_247
https://doi.org/10.1007/978-4-431-66874-9_247
Autor:
Hiroshi Fujimoto, Naganori Ishihara, Katsumi Nishimori, Wataru Futo, Satoru Kishida, Heizo Tokutaka, Fumihiko Toda
Publikováno v:
SHINKU. 33:144-146
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdca3bcd2cbc225f4c38ad3af4dbc36b
https://doi.org/10.3131/jvsj.33.144
https://doi.org/10.3131/jvsj.33.144
Publikováno v:
Advances in Superconductivity X ISBN: 9784431668817
We prepared the BaRbBiO(BRBO) thin films by rf magnetron sputtering using He+O2 gas(He=80%) at the substrate temperatures(Tsub) from room temperature(RT) to 450°C. The MgO(100) substrate was set at the position perpendicular to the target. From the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1a2185cacd8c36e52fe2ce09c03e660
https://doi.org/10.1007/978-4-431-66879-4_239
https://doi.org/10.1007/978-4-431-66879-4_239
Autor:
Tomoyuki Yamada, Fumihiko Toda
Publikováno v:
Advances in Superconductivity IX ISBN: 9784431684756
Advances in Superconductivity IX
Advances in Superconductivity IX
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f775ca9b61c65c3feeac4f5394361df
https://doi.org/10.1007/978-4-431-68473-2_99
https://doi.org/10.1007/978-4-431-68473-2_99