Ayako Tokiwa

904 total citations
37 papers, 745 citations indexed

About

Ayako Tokiwa is a scholar working on Condensed Matter Physics, Electronic, Optical and Magnetic Materials and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Ayako Tokiwa has authored 37 papers receiving a total of 745 indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Condensed Matter Physics, 25 papers in Electronic, Optical and Magnetic Materials and 9 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Ayako Tokiwa's work include Physics of Superconductivity and Magnetism (29 papers), Magnetic and transport properties of perovskites and related materials (13 papers) and Advanced Condensed Matter Physics (13 papers). Ayako Tokiwa is often cited by papers focused on Physics of Superconductivity and Magnetism (29 papers), Magnetic and transport properties of perovskites and related materials (13 papers) and Advanced Condensed Matter Physics (13 papers). Ayako Tokiwa collaborates with scholars based in Japan. Ayako Tokiwa's co-authors include Yasuhiko Syono, Masae Kikuchi, Masayasu Nagoshi, Norio Kobayashi, Tasuku Ito, Yoshio Mutô, Yōichi Sasaki, Takeo Oku, K. Hiraga and Kenji Hiraga and has published in prestigious journals such as Journal of the American Chemical Society, Physical review. B, Condensed matter and Applied Physics Letters.

In The Last Decade

Ayako Tokiwa

36 papers receiving 700 citations

Peers

Ayako Tokiwa
L. Walz Germany
Mitsuhiro Akatsu Japan
В. А. Пащенко Ukraine
Bernhard Hettich Germany
J.A. McAllister United Kingdom
A. Knizhnik Israel
W.J.A. Maaskant Netherlands
E. Pfeiffer United States
Jacques Curély France
J. Warczewski Poland
L. Walz Germany
Ayako Tokiwa
Citations per year, relative to Ayako Tokiwa Ayako Tokiwa (= 1×) peers L. Walz

Countries citing papers authored by Ayako Tokiwa

Since Specialization
Citations

This map shows the geographic impact of Ayako Tokiwa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ayako Tokiwa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ayako Tokiwa more than expected).

Fields of papers citing papers by Ayako Tokiwa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ayako Tokiwa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ayako Tokiwa. The network helps show where Ayako Tokiwa may publish in the future.

Co-authorship network of co-authors of Ayako Tokiwa

This figure shows the co-authorship network connecting the top 25 collaborators of Ayako Tokiwa. A scholar is included among the top collaborators of Ayako Tokiwa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ayako Tokiwa. Ayako Tokiwa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sasaki, Yōichi, Yukihiro Yoshida, Akihiro Ohto, et al.. (1993). Mixed Chromium(III)-Ruthenium(III) Trinuclear Complex, [CrRu2(μ3-O)(μ-CH3COO)6(pyridine)3]+. Chemistry Letters. 22(1). 69–72. 5 indexed citations
2.
Kobayashi, Hanako, Norikiyo Uryû, Ayako Tokiwa, et al.. (1992). Magnetic Properties of Oxygen Centered Trinuclear Ruthenium(III) and Rhodium(III) Complexes. Bulletin of the Chemical Society of Japan. 65(1). 198–202. 12 indexed citations
3.
Yamaguchi, Hiroshi, H. Ōyanagi, Ayako Tokiwa, & Yasuhiko Syono. (1991). Local structure and valence states in PbBaSrY1−xCaxCu3O7+δ and Pb2Sr2Y1−xCaxCu3O8+δ. Physica C Superconductivity. 185-189. 853–854. 5 indexed citations
4.
Tokiwa, Ayako, Yasuhiko Syono, Takeo Oku, & Masayasu Nagoshi. (1991). Superconductivity and crystal structure of Pb(Ba,Sr)2(Ln,Ca)Cu3Oy and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy(Ln: lanthanoid) with (Pb,Cu) double layers. Physica C Superconductivity. 185-189. 619–620. 1 indexed citations
5.
Tokiwa, Ayako, Takeo Oku, Masayasu Nagoshi, & Yasuhiko Syono. (1991). Synthesis and crystal structure of Pb2Sr2(Ln,Ce)nCu3O6+2n+δ and Pb(Ba,Sr)2(Ln,Ce)nCu3O5+2n+δ (Ln=Y,n=3,4,… and 0⩽δ⩽2.0), layered structure compounds with multiple fluorite layers. Physica C Superconductivity. 181(4-6). 311–319. 28 indexed citations
6.
Syono, Yasuhiko, Masae Kikuchi, Satoru Nakajima, & Ayako Tokiwa. (1991). Chemistry of superconducting Cu oxides with the block layers consisting of Tl, Pb and Bi ions. Physica C Superconductivity. 190(1-2). 9–13. 3 indexed citations
7.
Nagoshi, Masayasu, Yasuo Fukuda, Teruo Suzuki, et al.. (1991). Photoemission study on Ba1−xKxBiO3−δ and BaPbxBi1−δO3−δ. Physica C Superconductivity. 185-189. 1051–1052. 5 indexed citations
8.
Nagase, Kenzo, et al.. (1991). Kinetic analysis of superconducting YBa2O7, by thermogravimetry in high vacuum. Thermochimica Acta. 175(2). 207–213. 3 indexed citations
9.
Tokiwa, Ayako, Takeo Oku, Masayasu Nagoshi, et al.. (1990). Synthesis and crystal structure of Pb (Ba,Sr)2(Ln,Ce)2Cu3Oy (Ln: lanthanoid, y=9–10.4), a new member of the Pb system. Physica C Superconductivity. 172(1-2). 155–165. 23 indexed citations
10.
Tokiwa, Ayako, Masayasu Nagoshi, & Yasuhiko Syono. (1990). Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7. Physica C Superconductivity. 170(5-6). 437–442. 9 indexed citations
11.
Tokiwa, Ayako, Takeo Oku, Masayasu Nagoshi, et al.. (1989). Crystal structure and phase transition of PbBaSrYCu3Oy(y=7∼8.4. Physica C Superconductivity. 161(4). 459–467. 51 indexed citations
12.
Syono, Yasuhiko, Kenji Hiraga, Norio Kobayashi, et al.. (1988). An X-Ray Diffraction and Electron Microscopic Study of a New High-Tc Superconductor based on the Bi-Ca-Sr-Cu-O System. Japanese Journal of Applied Physics. 27(4A). L569–L569. 47 indexed citations
13.
Morioka, Y., Ayako Tokiwa, Masae Kikuchi, & Yasuhiko Syono. (1988). Raman spectra of YBa2Cu3−xMxOy(M=Co, Ni) superconductors. Solid State Communications. 67(3). 267–269. 9 indexed citations
14.
Tokiwa, Ayako, Yasuhiko Syono, Masae Kikuchi, et al.. (1988). Crystal Structure and Superconductivity Controlled by Cation Substitution and Oxygen Annealing in Y1-xCaxBa2Cu3Oy and YBa2-xLaxCu3Oy. Japanese Journal of Applied Physics. 27(6A). L1009–L1009. 71 indexed citations
15.
Sasaki, T., Norio Kobayashi, Ayako Tokiwa, et al.. (1988). Specific heat of YBa2Cu3O7−δ and BaCuO2+x in magnetic fields up to 6 T. Physica C Superconductivity. 156(3). 395–404. 23 indexed citations
16.
Tokiwa, Ayako, et al.. (1987). Crystal chemistry of oxide superconductors - Synthesis and properties of (Y,La,Ba)3Cu3Oy pseudo-ternary system.. Journal of the Japan Society of Powder and Powder Metallurgy. 34(10). 559–562. 1 indexed citations
17.
Syono, Yasuhiko, Masae Kikuchi, Katsuyoshi Oh‐ishi, et al.. (1987). Crystallochemical aspect of high temperature superconducting oxides. Physica B+C. 148(1-3). 218–223. 4 indexed citations
18.
Kuroda, Noritaka, et al.. (1987). Far-Infrared Absorption by Small Particles of YBa2Cu3O6.74. Journal of the Physical Society of Japan. 56(11). 3797–3800. 3 indexed citations
19.
Kikuchi, Masae, Yasuhiko Syono, Ayako Tokiwa, et al.. (1987). Thermal and X-Ray Analyses of High Temperature Superconductor YBa2Cu3O6.74. Japanese Journal of Applied Physics. 26(6A). L1066–L1066. 54 indexed citations
20.
Sasaki, Yōichi, Ayako Tokiwa, & Tasuku Ito. (1987). Mixed ruthenium-rhodium trinuclear complex [Ru2Rh(.mu.3-O)(.mu.-CH3COO)6(L)3]+ (L = H2O or pyridine). Journal of the American Chemical Society. 109(21). 6341–6347. 47 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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