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Sugai, Hiroyuki; Maeta, Hiroshi*; Matsumoto, Norimasa*; Kato, Teruo; Haruna, Katsuji*; Sataka, Masao; Ono, Fumihisa*
Physica Status Solidi (C), 4(8), p.2963 - 2966, 2007/07
Times Cited Count:0 Percentile:0.02The synthetic semiconductor diamond is potentially one of the best materials for electronic devices in severe environments like high temperature and radiation. We have studied the electrical transport properties of boron-doped synthetic semiconductor diamond and characterized natural and synthetic single crystal diamonds by measurements of the X-ray integrated scattering intensity, lattice parameter and diffuse scattering. The synthetic diamond were irradiated with 100 MeV carbon-ion at Tandem accelerator in JAEA-Tokai. After the irradiation, measurements of lattice parameters X-ray diffuse scattering were made at room temperature. The lattice parameters increased with ion fluence. The scattering intensity of the irradiated synthetic diamond diffuses asymmetrically to form a streak along the [-1 0 0] direction parallel to the reciprocal lattice vector. The result suggests that interstitial atoms and vacancies aggregate to form dislocation loop on the (100) plane.
Maeta, Hiroshi*; Matsumoto, Norimasa*; Haruna, Katsuji*; Saotome, Takao*; Ono, Fumihisa*; Sugai, Hiroyuki; Otsuka, Hideo; Ohashi, Kazutoshi*
Physica B; Condensed Matter, 376-377, p.283 - 287, 2006/04
Times Cited Count:3 Percentile:18.02(Physics, Condensed Matter)Natural and synthetic single crystal diamonds (type Ia, Ib, IIa and IIb) have been characterized by measurements of the X-ray integrated scattering intensity, lattice parameter and diffuse scattering. We found that the lattice parameter is smallest for natural diamond and largest for the B-doped diamond. We measured the diffuse scattering for (400) Bragg reflection for the four types of crystals. The scattering intensity of the natural crystals diffuses asymmetrically to form a streak along the [100] direction parallel to the reciprocal lattice vector. These results suggest the existence of the nitrogen atom platelets on (100) plane in the natural diamond. We also found the diffuse streaks along the [00] direction for (400) Bragg reflection for the B-doped crystal, suggesting that boron atoms are likely to form precipitates on the (100) plane.
Maeta, Hiroshi*; Matsumoto, Norimasa; Kato, Teruo; Sugai, Hiroyuki; Otsuka, Hideo*; Sataka, Masao
Nuclear Instruments and Methods in Physics Research B, 232(1-4), p.312 - 316, 2005/05
Times Cited Count:1 Percentile:14.46(Instruments & Instrumentation)no abstracts in English
Otsuka, Hideo; Hojo, Kiichi; Maeta, Hiroshi*; Otsu, Hitoshi; Sugai, Hiroyuki; Yamamoto, Hiroyuki
European Physical Journal D, 16(1-3), p.309 - 311, 2001/09
no abstracts in English
Ishikawa, Norito; Chimi, Yasuhiro; Iwase, Akihiro; Maeta, Hiroshi; *; Michikami, Osamu*; Kambara, Tadashi*; *; *; Terasawa, M.*
Nuclear Instruments and Methods in Physics Research B, 135, p.184 - 189, 1998/00
Times Cited Count:14 Percentile:73.13(Instruments & Instrumentation)no abstracts in English
Konishi, Hiroyuki; Yokoya, Akinari; Shiwaku, Hideaki; Motohashi, Haruhiko; *; Kashihara, Yasuharu*; *; Harami, Taikan; Sasaki, Teikichi; Maeta, Hiroshi; et al.
Nuclear Instruments and Methods in Physics Research A, 372, p.322 - 332, 1996/00
Times Cited Count:63 Percentile:97.54(Instruments & Instrumentation)no abstracts in English
; Iwase, Akihiro; ; Maeta, Hiroshi; *; *
Physica C, 259, p.54 - 60, 1996/00
Times Cited Count:11 Percentile:55.7(Physics, Applied)no abstracts in English
Kuriyama, Kazuo*; *; *; Sugai, Hiroyuki; Maeta, Hiroshi; Yahagi, Masahito*
Physical Review B, 52(5), p.3020 - 3022, 1995/08
Times Cited Count:4 Percentile:26.34(Materials Science, Multidisciplinary)no abstracts in English
Maeta, Hiroshi; Yamakawa, Koiji*; *; Haruna, K.*; Kato, Teruo; Ono, Fumihisa*
Nuclear Instruments and Methods in Physics Research B, 97, p.491 - 494, 1995/00
Times Cited Count:0 Percentile:0.01(Instruments & Instrumentation)no abstracts in English
Yamakawa, Koiji*; Maeta, Hiroshi
Scr. Metall. Mater., 32(7), p.967 - 970, 1995/00
no abstracts in English
Kato, Teruo; Maeta, Hiroshi
Teion Kogaku, 30(3), p.143 - 149, 1995/00
no abstracts in English
; Iwase, Akihiro; Iwata, Tadao; Maeta, Hiroshi; *; *
J. Supercond., 7(1), p.241 - 242, 1994/00
no abstracts in English
Yamakawa, Koiji*; Maeta, Hiroshi
Scr. Metall. Mater., 31(7), p.803 - 808, 1994/00
no abstracts in English
; Iwase, Akihiro; Iwata, Tadao; Maeta, Hiroshi; *; *
Superconductors, Surfaces and Superlattices (Trans. of Materials Research Soc. Jpn., Vol. 19A), 0, p.537 - 540, 1994/00
no abstracts in English
Maeta, Hiroshi; Yamakawa, Koiji*
Defect Diffus. Forum, 95-98, p.305 - 310, 1993/00
no abstracts in English
Maeta, Hiroshi; Haruna, K.*; B.Lu*; Ono, Fumihisa*
Nuclear Instruments and Methods in Physics Research B, 80-81, p.1477 - 1479, 1993/00
Times Cited Count:6 Percentile:57.52(Instruments & Instrumentation)no abstracts in English
Kawatsura, Kiyoshi*; *; *; *; Arai, Shigeyoshi*; *; *; *; *; *; et al.
Nuclear Instruments and Methods in Physics Research B, 75, p.367 - 370, 1993/00
no abstracts in English
Maeta, Hiroshi; Furuno, Shigemi; Hojo, Kiichi; ; Watanabe, Mitsuo
Journal of Nuclear Materials, 179-181, p.1003 - 1006, 1991/00
Times Cited Count:0 Percentile:0.01(Materials Science, Multidisciplinary)no abstracts in English
Maeta, Hiroshi; Kato, Teruo; Ono, Fumihisa*; Haruna, K.*; *; *
Physica C, 185-189, p.1383 - 1384, 1991/00
Times Cited Count:6 Percentile:43.62(Physics, Applied)no abstracts in English
Kato, Teruo; ; Maeta, Hiroshi
Materials Research Society Symposium Proceedings, Vol.169, p.337 - 340, 1990/00
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