Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Kazuo Nishihagi"'
Autor:
Tooru Tanaka, Congyu Hu, Qixin Guo, Zhengwei Chen, Katsuhiko Saito, Kazuo Nishihagi, Xu Wang, Makoto Arita
Publikováno v:
Journal of Luminescence. 194:374-378
We have fabricated the europium (Eu) doped Ga 2 O 3 thin films on GaAs substrate by using pulsed laser deposition. The impact of Eu contents on structure, surface morphology, and optical properties are systematically investigated. We demonstrate that
Publikováno v:
Materials Research Bulletin. 94:170-173
We have investigated structural properties of Eu doped gallium oxide (Ga 2 O 3 ) films grown by pulsed laser deposition at different substrate temperature. X-ray rocking curve and Raman spectroscopy measurements prove that the films grown at the subs
Publikováno v:
Thin Solid Films. 639:123-126
Thulium (Tm) doped Ga 2 O 3 films were deposited on sapphire substrates by pulsed laser deposition (PLD) with changing Tm compositions in the targets. Energy dispersive spectroscopy results reveal that films with different Tm compositions can be tail
Autor:
Ayako Shimazaki, Yoshihiro Mori, Mohammad B. Shabani, Norikuni Yabumoto, Kazuo Nishihagi, Harumi Shibata, Yohichi Gohshi, Hikari Takahara, Motoyuki Yamagami
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 90:72-82
Vapor phase treatment (VPT) was under investigation by the International Organization for Standardization/Technical Committee 201/Working Group 2 (ISO/TC201/WG2) to improve the detection limit of total reflection X-ray fluorescence spectroscopy (TXRF
Autor:
Kazuo Nishihagi
Publikováno v:
Hyomen Kagaku. 18:29-36
Laboratory XAFS装置も改良が進み, 通常のXAFS測定ではSRと比肩できるデータが出てきている。Laboratory XAFS装置はフォトン数や分解能あるいは不純線の存在等の固有の問題点を抱えていた。フ
Autor:
Morita Naoki, Wakasa Masanobu, Tatsushi Wakisaka, Kazuo Taniguchi, Kazuo Nishihagi, Shinichi Terada
Publikováno v:
BUNSEKI KAGAKU. 45:933-939
有機物マトリックス中の微量元素の直接定量を目的として,単色化X線源を用いたエネルギー分散型蛍光X線分析装置(EDXRF)を開発した.EDXRFにおいて分光結晶で単色化したX線源(17.4keV)を用い
Autor:
Zhengwei Chen, Xu Wang, Qixin Guo, Tooru Tanaka, Mitsuhiro Nishio, Kazuo Nishihagi, Katsuhiko Saito, Makoto Arita
Publikováno v:
Applied Physics Letters. 109:102106
Ga2O3 thin films were deposited on (111) Si substrate by pulsed laser deposition method. X-ray photoelectron spectroscopy has been used to determine the valence band offset at Ga2O3/Si heterojunction interface. We measured the binding energies of Si
Publikováno v:
Review of Scientific Instruments. 62:2588-2592
A two‐crystal spectrometer for chemical state analysis of high‐resolution x‐ray fluorescence spectra employs ball‐screw and slide mechanisms rather than gears to obtain a 2θ scanning range of 40°–147° and a Δ2θ scanning step of 10−4
Publikováno v:
Advances in X-ray Analysis. 35:393-399
A two-crystal spectrometer for chemical state analysis by high-resolution x-ray fluorescence spectrometry employs hall-screw and slide mechanisms rather than gears to obtain a 2θ scanning range of 40° -147°; a Δ2θ scanning step of 10−4 deg und
Publikováno v:
Advances in X-ray Analysis. 34:81-89
Recently, semiconductors have been integrated and densified to much higher levels. Under this circumstance, control of surface impurity on the Si substrate has become more important. We have attempted to increase analytical sensitivity of the transit