Zobrazeno 1 - 10 of 68 pro vyhledávání: '"Hiromi Unoki"'
1
Crystal growth and phase diagram of Gd3−xYxFe5O12 system
Autor: Kunihiko Oka, Hiromi Unoki, Akira Negishi
Publikováno v: Journal of Crystal Growth. 284:440-445
The crystallographic phase diagram for the Gd 2 O 3 –Fe 2 O 3 and (Gd 2 O 3 +Y 2 O 3 )–Fe 2 O 3 system have been constructed by differential thermal analysis, quenching and X-ray diffraction. Single crystals of Gd 3− x Y x Fe 5 O 12 have been g
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9c471eb8b0b3a0ba404d12cf0f91b57
https://doi.org/10.1016/j.jcrysgro.2005.07.027
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3
NdBa2Cu3O7 − δ single crystal growth by the traveling-solvent floating-zone method
Autor: Kiyoshi Kuroda, In-Hwan Choi, Hiromi Unoki, Naoki Koshizuka
Publikováno v: Journal of Crystal Growth. 173:73-80
Large single crystals are very important to not only for applications but also for the basic study of high-Tc oxide superconductors. We have succeeded in growing large size ((A) 4 mm o × 20 mm l and (B) 3 mm o × 32 mm l) NdBa2Cu3O7-δ (Nd123) cryst
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6300f7c66577113ba15847db72f49082
https://doi.org/10.1016/s0022-0248(96)00799-3
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4
Field-induced pinning effect depending on the composition of Nd1 + xBa2 − xCu3O7 − δ single crystals grown by the TSFZ method
Autor: Souichi Segawa, Kiyoshi Kuroda, Hiromi Unoki, Keita Abe, Jianguo Wen, Naoki Koshizuka
Publikováno v: Physica C: Superconductivity. 275:311-316
We have studied the field-induced pinning effect of Nd 1 + x Ba 2 − x Cu 3 O 7 − δ single crystals grown by the TSFZ method using feed rods of Nd 1 + α Ba 2 − α Cu 3 O 7 − δ ( α = 0 and 0.1). The ICP measurements reveal that Nd, Ba and C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62db05c16ff15dec39cbca815d6c343a
https://doi.org/10.1016/s0921-4534(97)00008-7
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6
Field-induced pinning effect of Nd(Ba1−xNdx)2Cu3O7−δ single crystals grown by the traveling-solvent floating-zone method
Autor: H. Mori, Kiyoshi Kuroda, Toshio Egi, Jianguo Wen, Hiromi Unoki, Naoki Koshizuka
Publikováno v: Physica C: Superconductivity. 270:223-230
We have studied the superconducting properties of Nd(Ba1−xNdx)2Cu3O7−δ (Nd123, x ≈ 0.1) single crystals grown by the traveling-solvent floating-zone method under 0.1% O2 in Ar atmosphere. The enhancement of the magnetization with increasing fi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9aee1ff06945837cb5ae5f53e9e64406
https://doi.org/10.1016/s0921-4534(96)00483-2
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7
Crystal growth of PbTiO3 by the top-seeded solution-growth method
Autor: Hirofumi Takahashi, Hirotaka Yamaguchi, Kunihiko Oka, Hiromi Unoki
Publikováno v: Journal of Crystal Growth. 166:380-383
Centimeter-size crystals of lead titanate PbTiO 3 have been grown by the top-seeded solution-growth (TSSG) method using two different solvents: PbO and a mixture of PbO and B 2 O 3 . The maximum dimensions of the as-grown crystal boules were 32 x 32
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64891e5375bba1c468a4e57c63f33a67
https://doi.org/10.1016/0022-0248(95)00482-3
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8
Superconducting Properties of Nd(Ba, Nd)2Cu3O7-.DELTA. Single Crystals Grown by TSFZ Method
Autor: Naoki Koshizuka, Hiromi Unoki, Toshio Egi, Jianguo Wen, Kiyoshi Kuroda
Publikováno v: Journal of the Japan Society of Powder and Powder Metallurgy. 43:1076-1080
We have studied the superconducting properties of Nd(Ba1-xNdx)2Cu3O7-δ (Nd123, x≈0.1) single crystals grown by the traveling-solvent floating-zone method under 0.1% O2 in Ar atmosphere. An anomalous peak effect in the magnetization hysteresis (M-B
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdee0dc90c6d85973e17eab7b373528b
https://doi.org/10.2497/jjspm.43.1076
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9
Crystal growth of La2−xSrxCuO4−δ by the travelling-solvent floating-zone method
Autor: Hiromi Unoki, Kunihiko Oka, Tae-Su Han, A.A. Menovsky, AnneMarie M. Moe, M.J.V. Menken, Yorio Ohashi, Z. Tarnawski, Tosshimitsu Ito
Publikováno v: Journal of Crystal Growth. 137:479-486
The crystal-growth conditions for La 2−x Sr x CuO 4− δ by the travelling-solvent floating-zone method have been investigated. The effect of the ambient atmosphere on the growth has been studied. Results show that evaporation of components from t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33094ba38148c2ea9a9a65871d779054
https://doi.org/10.1016/0022-0248(94)90987-3
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10
Crystal growth of Bi2Sr2CaCu2O8 by the top-seeded solution-growth method
Autor: Fumitoshi Iga, Tae-Su Han, Kunihiko Oka, Dong Han Ha, Hiromi Unoki
Publikováno v: Physica C: Superconductivity. 215:407-410
Single crystals of Bi 2 Sr 2 CaCu 2 O 8 have been grown by the top-seeded solution-growth (TSSG) method with Bi 2.4 Sr 1.5 Ca 1.0 Cu 1.8 O x as the solvent. Crystals of approximately 10 φ × 6 mm in size and about 4 g weight were obtained. The susce
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::054fe8b8a227dd5130d2836bfc1e6c6e
https://doi.org/10.1016/0921-4534(93)90243-j
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