Ayako Yamamoto

1987

Crystal Chemistry of Oxide Superconductors - Synthesis and Properties of (Y,La,Ba)₃Cu₃O_y Pseudo-ternary System

Tokiwa, A., Kikuch], M., Syono, Y., Nakatsu, O., Kobayashi, N. & Muto, Y., 1987, In: Journal of the Japan Society of Powder and Powder Metallurgy. 34, 10, p. 559-562 4 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

Crystallochemical aspect of high temperature superconducting oxides

Syono, Y., Kikuchi, M., Oh-Ishi, K., Tokiwa, A., Kusaba, K., Hiraga, K., Kajitani, T., Shindo, D., Yamauchi, H., Morioka, Y., Arai, H., Nagase, K., Kobayashi, N., Sasaoka, T. & Muto, Y., 1987 12, In: Physica B+C. 148, 1-3, p. 218-223 6 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Effect of Co Substitution on T_c in YBa₂Cu_3-xCo_xO_7-y,(x=0-1)

Shindo, D., Hiraga, K., Hirabayashi, M., Tokiwa, A., Kikuchi, M., Syono, Y., Nakatsu, O., Kobayashi, N., Muto, Y. & Aoyagi, E., 1987 10, In: Japanese Journal of Applied Physics. 26, 10 A, p. L1667-L1669

研究成果: Article › 査読

39 被引用数 (Scopus)

Far-Infrared Absorption by Small Particles of YBa₂Cu₃O_6.74

Kuroda, N., Chida, F., Sasaki, Y., Nishina, Y., Kikuchi, M., Tokiwa, A. & Syono, Y., 1987 1 1, In: Journal of the Physical Society of Japan. 56, 11, p. 3797-3800 4 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Mixed Ruthenium-rhodium Trinuclear Complex [Ru₂Rh(m₃-oo)(ai-CH₃COO)₆(L)3]⁺(L = H₂O or Pyridine)

Sasaki, Y., Tokiwa, A. & Ito, T., 1987 10 1, In: Journal of the American Chemical Society. 109, 21, p. 6341-6347 7 p.

研究成果: Article › 査読

62 被引用数 (Scopus)

Superconducting properties of the high-T_c oxide compounds

Kobayashi, N., Nakatsu, O., Terada, S., Sasaoka, T., Sasaki, T., Furuyama, M., Noto, K., Kikichi, M., Tokiwa, A., Oh-Ishi, K., Syono, Y. & Muto, Y., 1987 12, In: Physica B+C. 148, 1-3, p. 469-471 3 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Thermal and x-ray analyses of high temperature superconductor YBa2Cu3O6.74

Kikuchi, M., Syono, Y., Tokiwa, A., Oh-Ishi, K., Arai, H., Hiraga, K., Kobayashi, N. & Sasaoka, T., 1987 6, In: Japanese Journal of Applied Physics. 26, 6A, p. 1066-1099 34 p.

研究成果: Article › 査読

56 被引用数 (Scopus)

1988

An x-ray diffraction and electron microscopic study of a new high-T_csuperconductor based on the Bi-Ca-Sr-Cu-O system

Syono, Y., Hiraga, K., Kobayashi, N., Kikuchi, M., Kusaba, K., Kajitani, T., Shindo, D., Hosoya, S., Tokiwa, A., Terada, S. & Muto, Y., 1988 4, In: Japanese Journal of Applied Physics. 27, 4A, p. L569-L572

研究成果: Article › 査読

54 被引用数 (Scopus)

Bis(μ-acetato)(μ-oxo)bis(tris (pyridine)ruthenium(III)) Ion: A ruthenium analogue of the hemerythrin active center

Sasaki, Y., Suzuki, M., Tokiwa, A., Ebihara, M., Yamaguchi, T., Kabuto, C. & Ito, T., 1988 8, In: Journal of the American Chemical Society. 110, 18, p. 6251-6252 2 p.

研究成果: Article › 査読

53 被引用数 (Scopus)

Crystal structure and superconductivity controlled by cation substitution and oxygen annealing in y_1-xca_xba₂cu₃o_yand yba_2-xla_xcu₃o_y

Tokiwa, A., Syono, Y., Kikuchi, M., Suzuki, R., Kajitani, T., Kobayashi, N., Sasaki, T., Nakatsu, O. & Muto, Y., 1988 6, In: Japanese Journal of Applied Physics. 27, 6A, p. L1009-L1012

研究成果: Article › 査読

78 被引用数 (Scopus)

Raman spectra of YBa₂Cu_3-xM_xO_y(M=Co, Ni) superconductors

Morioka, Y., Tokiwa, A., Kikuchi, M. & Syono, Y., 1988 7, In: Solid State Communications. 67, 3, p. 267-269 3 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

Specific heat of YBa₂Cu₃O_7-δ and BaCuO_2+x in magnetic fields up to 6 T

Sasaki, T., Nakatsu, O., Kobayashi, N., Tokiwa, A., Kikuchi, M., Liu, A., Hiraga, K., Syono, Y. & Muto, Y., 1988 10 1, In: Physica C: Superconductivity and its applications. 156, 3, p. 395-404 10 p.

研究成果: Article › 査読

28 被引用数 (Scopus)

Specific heat of YBa₂Cu₃O_7-δ in magnetic fields up to 6T

Sasaki, T., Kobayashi, N., Nakatsu, O., Matsuhira, T., Tokiwa, A., Kikuchi, M., Syono, Y. & Muto, Y., 1988, In: Physica C: Superconductivity and its applications. 153-155, PART 2, p. 1012-1013 2 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

Synthesis and superconductivity of a new high-T_cTl-Ba-Ca-Cu-O phase

Kikuchi, M., Kobayashi, N., Iwasaki, H., Shindo, D., Oku, T., Tokiwa, A., Kajitani, T., Hiraga, K., Syono, Y. & Muto, Y., 1988 6, In: Japanese Journal of Applied Physics. 27, 6A, p. L1050-L1053

研究成果: Article › 査読

18 被引用数 (Scopus)

Upper and lower critical fields of REBa₂Cu₃O_z compounds

Kobayashi, N., Iwasaki, H., Terada, S., Noto, K., Tokiwa, A., Kikuchi, M., Syono, Y. & Muto, Y., 1988, In: Physica C: Superconductivity and its applications. 153-155, p. 1525-1526 2 p.

研究成果: Article › 査読

19 被引用数 (Scopus)

1989

Crystal structure and phase transition of PbBaSrYCu₃O_y(y=7∼8.4

Tokiwa, A., Oku, T., Nagoshi, M., Kikuchi, M., Hiraga, K. & Syono, Y., 1989 12 1, In: Physica C: Superconductivity and its applications. 161, 4, p. 459-467 9 p.

研究成果: Article › 査読

57 被引用数 (Scopus)

Electron energy loss spectroscopy on oxygen k-edge fine structure of YBa₂Cu₃O_ycontaining dopants (La, Ca, Co)

Shindo, D., Hiraga, K., Tokiwa, A., Soga, T., Hojou, K., Furuno, S., Otsu, H., Nakajima, S., Hirabayashi, M., Kikuchi, M. & Syono, Y., 1989 7, In: Japanese Journal of Applied Physics. 28, 7 A, p. L1197-L1200

研究成果: Article › 査読

2 被引用数 (Scopus)

Raman spectra of YBa₂Cu₃O_x (x=6-7)

Morioka, Y., Tokiwa, A., Kikuchi, M., Syono, Y. & Nagase, K., 1989 6, In: Solid State Communications. 70, 12, p. 1127-1129 3 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

1990

CORRECTION

Yamamoto, A., 1990, In: Physica C.

研究成果: Article › 査読

DEPENDENCE OF RAMAN-SPECTRA OF YBA2CU3O6 ON EXCITATION-FREQUENCY

Yamamoto, A., 1990, In: Molecular Crystals and Liquid Crystals.

研究成果: Article › 査読

Different origins of T_c-suppression in YBa₂(Cu_1−xM_x)₃O_y(M=Co and Zn)

Terada, S., Kobayashi, N., Iwasaki, H., Tokiwa, A., Kikuchi, M., Syono, Y. & Muto, Y., 1990, In: Physica B: Condensed Matter. 165-166, p. 1545-1546 2 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Proper composition for superconductivity in Pb(Ba, Sr)₂(Y, Ca)Cu₃O₇

Tokiwa, A., Nagoshi, M. & Syono, Y., 1990 10 1, In: Physica C: Superconductivity and its applications. 170, 5-6, p. 437-442 6 p.

研究成果: Article › 査読

13 被引用数 (Scopus)

Shock-induced superconductivity of Tl₂Ba₂CuO ₆

Kikuchi, M., Syono, Y., Kobayashi, N., Oku, T., Aoyagi, E., Hiraga, K., Kusaba, K., Atou, T., Tokiwa, A., Fukuoka, K. & Nakajima, S., 1990, In: Applied Physics Letters. 57, 8, p. 813-815 3 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Synthesis and crystal structure of Pb (Ba,Sr)₂(Ln,Ce)₂Cu₃O_y (Ln: lanthanoid, y=9-10.4), a new member of the Pb system

Tokiwa, A., Oku, T., Nagoshi, M., Shindo, D., Kikuchi, M., Oikawa, T., Hiraga, K. & Syono, Y., 1990 12 1, In: Physica C: Superconductivity and its applications. 172, 1-2, p. 155-165 11 p.

研究成果: Article › 査読

26 被引用数 (Scopus)

Synthesis and superconductivity of PbBaSrY_1-xCa_xCu₃O₇

Tokiwa, A., Nagoshi, M., Oku, T., Kobayashi, N., Kikuchi, M., Hiraga, K. & Syono, Y., 1990 6 15, In: Physica C: Superconductivity and its applications. 168, 3-4, p. 285-290 6 p.

研究成果: Article › 査読

34 被引用数 (Scopus)

1991

Changes in modulation period of Bi₂Sr₂ (Ca_1-xNd_x) Cu₂O_{a + δ} and their relations to oxygen content

Onozuka, T., Tokiwa, A., Syono, Y., Koike, Y. & Saito, Y., 1991 12 1, In: Physica C: Superconductivity and its applications. 185-189, PART 2, p. 885-886 2 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Chemistry of superconducting Cu oxides with the block layers consisting of Tl, Pb and Bi ions

Syono, Y., Kikuchi, M., Nakajima, S. & Tokiwa, A., 1991 12 2, In: Physica C: Superconductivity and its applications. 190, 1-2, p. 9-13 5 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Kinetic analysis of superconducting YBa₂O₇, by thermogravimetry in high vacuum

Nagase, K., Yokobayashi, H., Kikuchi, M., Tokiwa, A., Syono, Y. & Morioka, Y., 1991 3 15, In: Thermochimica Acta. 175, 2, p. 207-213 7 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Local structure and valence states in PbBaSrY_1-xCa_xCu₃O_7+δ and Pb₂Sr₂Y_1-xCa_xCu₃O_8+δ

Yamaguchi, H., Oyanagi, H., Tokiwa, A. & Syono, Y., 1991 12 1, In: Physica C: Superconductivity and its applications. 185-189, PART 2, p. 853-854 2 p.

研究成果: Article › 査読

7 被引用数 (Scopus)

Oxygen-loss effects on superconductivity of Bi2Sr2CaCu2Oy system

Nagoshi, M., Suzuki, T., Fukuda, Y., Terashima, K., Nakanishi, Y., Ogita, M., Tokiwa, A., Syono, Y. & Tachiki, M., 1991, In: Physical Review B. 43, 13, p. 10445-10450 6 p.

研究成果: Article › 査読

78 被引用数 (Scopus)

Photoemission study on Ba_1-xK_xBiO_3-δ and BaPb_xBi_1-δO_3-δ

Nagoshi, M., Fukuda, Y., Suzuki, T., Ueki, K., Tokiwa, A., Kikuchi, M., Syono, Y. & Tachiki, M., 1991 12 1, In: Physica C: Superconductivity and its applications. 185-189, PART 2, p. 1051-1052 2 p.

研究成果: Article › 査読

7 被引用数 (Scopus)

Preparation, Structure, and Properties of the Bis(μ-acetato)(μ-oxo)Ruthenium(III) Dimers [Ru₂(μ-CH₃COO)₂(μ-O)(py)₆]²⁺ and [Ru₂(μ-CH₃COO)₂(μ-O)(bpy)₂(py)₂]²⁺

Sasaki, Y., Suzuki, M., Yamaguchi, T., Kabuto, C., Ochi, T., Ito, T., Nagasawa, A., Tokiwa, A. & Ebihara, M., 1991 12 1, In: Inorganic Chemistry. 30, 26, p. 4903-4908 6 p.

研究成果: Article › 査読

66 被引用数 (Scopus)

Superconductivity and crystal structure of Pb(Ba,Sr)₂(Ln,Ca)Cu₃O_y and Pb(Ba,Sr)₂(Ln,Ce)₂Cu₃O_y(Ln: lanthanoid) with (Pb,Cu) double layers

Tokiwa, A., Syono, Y., Oku, T. & Nagoshi, M., 1991 12 1, In: Physica C: Superconductivity and its applications. 185-189, PART 1, p. 619-620 2 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Synthesis and crystal structure of Pb₂Sr₂(Ln,Ce)_nCu₃O_6+2n+δ and Pb(Ba,Sr)₂(Ln,Ce)_nCu₃O_5+2n+δ (Ln=Y,n=3,4,... and 0≤δ≤2.0), layered structure compounds with multiple fluorite layers

Tokiwa, A., Oku, T., Nagoshi, M. & Syono, Y., 1991 10 10, In: Physica C: Superconductivity and its applications. 181, 4-6, p. 311-319 9 p.

研究成果: Article › 査読

39 被引用数 (Scopus)

1992

Electronic states of BaBiO_{3- delta} and K-doping effects studied by photoelectron spectroscopy

Nagoshi, M., Suzuki, T., Fukuda, Y., Ueki, K., Tokiwa, A., Kiruchi, M., Syono, Y. & Tachiki, M., 1992 12 1, In: Journal of Physics: Condensed Matter. 4, 26, p. 5769-5781 13 p., 011.

研究成果: Article › 査読

44 被引用数 (Scopus)

MAGNETIC-PROPERTIES OF OXYGEN CENTERED TRINUCLEAR RUTHENIUM(III) AND RHODIUM(III) COMPLEXES

Yamamoto, A., Kobayashi, H. & Uryu, N., 1992, In: Bulletin of the Chemical Society of Japan.

研究成果: Article › 査読

X-ray absorption study on PbBaSrYCu3O7+Δ and PbBaSr(Y,Ca)Cu3Cu3O7+Δ

Yamaguchi, H., Yanagi, H., Tokiwa, A. & Shono, Y., 1992 4, In: Ferroelectrics. 128, 1, p. 191-196 6 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

1993

Annealing effects on the Meissner signals from HgBaCaCuO superconductors

Adachi, S., Tokiwa-Yamamoto, A., Itoh, M., Isawa, K. & Yamauchi, H., 1993 9 10, In: Physica C: Superconductivity and its applications. 214, 3-4, p. 313-315 3 p.

研究成果: Article › 査読

26 被引用数 (Scopus)

Composition, crystal structure and superconducting properties of HgBaCuO and HgBaCaCuO superconductors

Tokiwa-Yamamoto, A., Isawa, K., Itoh, M., Adachi, S. & Yamauchi, H., 1993 11 1, In: Physica C: Superconductivity and its applications. 216, 3-4, p. 250-256 7 p.

研究成果: Article › 査読

44 被引用数 (Scopus)

Disordering of Pb and Cu arrangements in the block layers of Pb₂Sr₂YCu₃O_8+δ and PbBaSrYCu₃O_7+δ by oxygen introduction

Tokiwa-Yamamoto, A., Izumi, F., Oku, T. & Syono, Y., 1993 10 1, In: Physica C: Superconductivity and its applications. 215, 3-4, p. 243-252 10 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

Increase of T_c in HgBa₂CuO_y by reducing treatment

Itoh, M., Tokiwa-Yamamoto, A., Adachi, S. & Yamauchi, H., 1993 7 15, In: Physica C: Superconductivity and its applications. 212, 3-4, p. 271-273 3 p.

研究成果: Article › 査読

47 被引用数 (Scopus)

Large enhancement of T_c in the 134 K superconductor HgBa₂Ca₂Cu₃O_y under high pressure

Takahashi, H., Tokiwa-Yamamoto, A., Môri, N., Adachi, S., Yamauchi, H. & Tanaka, S., 1993 12 1, In: Physica C: Superconductivity and its applications. 218, 1-2, p. 1-4 4 p.

研究成果: Article › 査読

45 被引用数 (Scopus)

MIXED CHROMIUM(III)-RUTHENIUM(III) TRINUCLEAR COMPLEX, CRRU2(MU-3-O)(MU-CH3COO)6(PYRIDINE)3 +

Yamamoto, A., Sasaki, Y., Yoshida, Y. & Ohto, A., 1993, In: Chemistry Letters Issue.

研究成果: Article › 査読

O1s core levels of Bi-Sr-Ca-Cu-O superconductors studied by X-ray photoelectron spectroscopy

Nagoshi, M., Fukuda, Y., Sanada, N., Syono, Y., Tokiwa-Yamamoto, A. & Tachiki, M., 1993 2 26, In: Journal of Electron Spectroscopy and Related Phenomena. 61, 3-4, p. 309-322 14 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

Substitution of methanol-d₄ for the coordinated water in the trinuclear complexes, [M₃(μ₃-O)(μ-CH₃COO)₆(H₂O)₃]⁺ (M₃=Ru₃, Rh₃ or Ru₂Rh) in methanol-d₄

Sasaki, Y., Nagasawa, A., Tokiwa-Yamamoto, A. & Ito, T., 1993 10, In: Inorganica Chimica Acta. 212, 1-2, p. 175-182 8 p.

研究成果: Article › 査読

40 被引用数 (Scopus)

The effect of Pb doping in HgBa₂Ca₂Cu₃O_8+δ superconductor

Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S. & Yamauchi, H., 1993 11 10, In: Physica C: Superconductivity and its applications. 217, 1-2, p. 11-15 5 p.

研究成果: Article › 査読

69 被引用数 (Scopus)

Valence states of BaBi1-xPbxO3-δ (0≤x≤1) studied by photoelectron spectroscopy

Nagoshi, M., Suzuki, T., Fukuda, Y., Tokiwa-Yamamoto, A., Syono, Y. & Tachiki, M., 1993, In: Physical Review B. 47, 9, p. 5196-5201 6 p.

研究成果: Article › 査読

11 被引用数 (Scopus)

1994

Encapsulation method for the synthesis of nearly single-phase superconducting HgBa₂Ca₂Cu₃O_8+δ with T_c≥ 135 K

Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S. & Yamauchi, H., 1994 3 10, In: Physica C: Superconductivity and its applications. 222, 1-2, p. 33-37 5 p.

研究成果: Article › 査読

71 被引用数 (Scopus)

Irreversibility line for a Pb-doped Hg-Ba-Ca-Cu-O superconductor

Isawa, K., Higuchi, T., MacHi, T., Tokiwa-Yamamoto, A., Adachi, S., Murakami, M. & Yamauchi, H., 1994 12 1, In: Applied Physics Letters. 64, 10, p. 1301-1303 3 p.

研究成果: Article › 査読

23 被引用数 (Scopus)

Pb-doping effect on irreversibility fields of HgBa₂Ca ₂Cu₃O_8+δ superconductors

Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S. & Yamauchi, H., 1994, In: Applied Physics Letters. 65, 16, p. 2105-2107 3 p.

研究成果: Article › 査読

23 被引用数 (Scopus)

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