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Journal Articles

X-ray diffuse scattering from carbon-ion-irradiated diamond

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:0.02

The 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.

Journal Articles

The Characterization of synthetic and natural single crystal diamonds by X-ray diffraction

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:18.82(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 [$$bar{1}$$00] direction for (400) Bragg reflection for the B-doped crystal, suggesting that boron atoms are likely to form precipitates on the (100) plane.

Journal Articles

Radiation defects in heavy ion-irradiated nickel at low temperature by X-ray diffuse scattering

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:14.98(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Radiation defects in nano-structured materials

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

Journal Articles

Electronic excitation effects in ion-irradiated high-Tc superconductors

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:13 Percentile:72.4(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Synchrotron radiation beamline to study radioactive materials at the Photon Factory

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:55 Percentile:96.76(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Lattice expansion in EuBa$$_{2}$$Cu$$_{3}$$O$$_{y}$$ irradiated with energetic ions

; Iwase, Akihiro; ; Maeta, Hiroshi; *; *

Physica C, 259, p.54 - 60, 1996/00

 Times Cited Count:10 Percentile:53.75(Physics, Applied)

no abstracts in English

Journal Articles

Radiation effects on Li-vacancy ordering in $$beta$$-LiAl

Kuriyama, Kazuo*; *; *; Sugai, Hiroyuki; Maeta, Hiroshi; Yahagi, Masahito*

Physical Review B, 52(5), p.3020 - 3022, 1995/08

 Times Cited Count:4 Percentile:26.83(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

X-ray diffuse scattering of quenched copper single crystals

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

Journal Articles

Hydrogen migration in cold worked Pd around 50K

Yamakawa, Koiji*; Maeta, Hiroshi

Scr. Metall. Mater., 32(7), p.967 - 970, 1995/00

no abstracts in English

Journal Articles

Journal Articles

Ion irradiation effects in EuBa$$_{2}$$Cu$$_{3}$$O$$_{y}$$ thin film

; Iwase, Akihiro; Iwata, Tadao; Maeta, Hiroshi; *; *

J. Supercond., 7(1), p.241 - 242, 1994/00

no abstracts in English

Journal Articles

Migration of hydrogen isotopes in Pd-Ni dilute alloys around 50K

Yamakawa, Koiji*; Maeta, Hiroshi

Scr. Metall. Mater., 31(7), p.803 - 808, 1994/00

no abstracts in English

Journal Articles

Ion irradiation effects of EuBa$$_{2}$$Cu$$_{3}$$O$$_{y}$$ thin film

; 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

Journal Articles

Hydrogen migration in Pd-H alloys at low temperatures

Maeta, Hiroshi; Yamakawa, Koiji*

Defect Diffus. Forum, 95-98, p.305 - 310, 1993/00

no abstracts in English

Journal Articles

X-ray diffraction studies of self-ion irradiated synthetic single crystal diamond

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:58.17(Instruments & Instrumentation)

no abstracts in English

Journal Articles

PIXE and RBS study of radiation-induced segregation in single crystal austenitic stainless steel SUS 304

Kawatsura, Kiyoshi*; *; *; *; Arai, Shigeyoshi*; *; *; *; *; *; et al.

Nuclear Instruments and Methods in Physics Research B, 75, p.367 - 370, 1993/00

no abstracts in English

Journal Articles

In-situ observation of bubble formation in superconducting YBa$$_{2}$$Cu$$_{3}$$O$$_{7-delta}$$ during He-ion irradiation in an electron microscope

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

Journal Articles

Thermal expansion measurements in a La$$_{1.85}$$Sr$$_{0.15}$$CuO$$_{4}$$ single crystal superconductor by X-ray diffraction

Maeta, Hiroshi; Kato, Teruo; Ono, Fumihisa*; Haruna, K.*; *; *

Physica C, 185-189, p.1383 - 1384, 1991/00

 Times Cited Count:6 Percentile:44.2(Physics, Applied)

no abstracts in English

Journal Articles

Superconductivity of Bi-Sr-Ca-Cu-O prepared from CuO or CU$$_{2}$$O, and doped with Ag ions

Kato, Teruo; ; Maeta, Hiroshi

Materials Research Society Symposium Proceedings, Vol.169, p.337 - 340, 1990/00

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24 (Records 1-20 displayed on this page)