S. Ohnuma

1.4k total citations
67 papers, 1.2k citations indexed

About

S. Ohnuma is a scholar working on Atomic and Molecular Physics, and Optics, Mechanical Engineering and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, S. Ohnuma has authored 67 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Atomic and Molecular Physics, and Optics, 44 papers in Mechanical Engineering and 44 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in S. Ohnuma's work include Magnetic properties of thin films (53 papers), Metallic Glasses and Amorphous Alloys (39 papers) and Magnetic Properties and Applications (27 papers). S. Ohnuma is often cited by papers focused on Magnetic properties of thin films (53 papers), Metallic Glasses and Amorphous Alloys (39 papers) and Magnetic Properties and Applications (27 papers). S. Ohnuma collaborates with scholars based in Japan, United States and Russia. S. Ohnuma's co-authors include H. Fujimori, Seiji Mitani, T. Masumoto, H. Fujimori, N. Kobayashi, T. Masumoto, K. Shirakawa, M. Nosé, Masahiro Yamaguchi and M. Ohnuma and has published in prestigious journals such as Journal of Applied Physics, Journal of Alloys and Compounds and Journal of Magnetism and Magnetic Materials.

In The Last Decade

S. Ohnuma

66 papers receiving 1.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
S. Ohnuma Japan 17 823 723 588 387 261 67 1.2k
C. Prados Spain 19 707 0.9× 717 1.0× 448 0.8× 345 0.9× 136 0.5× 51 1.1k
Ryusuke Hasegawa United States 20 443 0.5× 854 1.2× 1.0k 1.7× 290 0.7× 267 1.0× 37 1.3k
S. U. Jen Taiwan 19 658 0.8× 936 1.3× 359 0.6× 686 1.8× 347 1.3× 149 1.5k
Nguyen N. Phuoc Singapore 22 1.2k 1.4× 1.1k 1.5× 540 0.9× 390 1.0× 186 0.7× 96 1.4k
S. Atalay Türkiye 18 446 0.5× 698 1.0× 640 1.1× 309 0.8× 359 1.4× 84 1.1k
Teruo Bitoh Japan 24 432 0.5× 937 1.3× 1.0k 1.7× 287 0.7× 97 0.4× 70 1.4k
A. Layadi Algeria 21 835 1.0× 758 1.0× 186 0.3× 409 1.1× 532 2.0× 71 1.3k
D. Hinz Germany 21 401 0.5× 942 1.3× 261 0.4× 563 1.5× 91 0.3× 47 1.2k
K. Shirakawa Japan 17 283 0.3× 599 0.8× 473 0.8× 409 1.1× 242 0.9× 90 1.0k
B. C. Lim Singapore 19 754 0.9× 619 0.9× 230 0.4× 255 0.7× 125 0.5× 46 968

Countries citing papers authored by S. Ohnuma

Since Specialization
Citations

This map shows the geographic impact of S. Ohnuma'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 S. Ohnuma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. Ohnuma more than expected).

Fields of papers citing papers by S. Ohnuma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S. Ohnuma. 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 S. Ohnuma. The network helps show where S. Ohnuma may publish in the future.

Co-authorship network of co-authors of S. Ohnuma

This figure shows the co-authorship network connecting the top 25 collaborators of S. Ohnuma. A scholar is included among the top collaborators of S. Ohnuma 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 S. Ohnuma. S. Ohnuma 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.
Shimada, Yusuke, Masahiro Yamaguchi, S. Ohnuma, et al.. (2003). Granular thin films with high RF permeability. IEEE Transactions on Magnetics. 39(5). 3052–3056. 58 indexed citations
2.
Kobayashi, N., S. Ohnuma, T. Masumoto, & H. Fujimori. (2001). Tunnel-type GMR in Metal-fluoride Nano-granular Films and Enhancement of Their Low-field MR Response by GIG Structure.. Journal of the Magnetics Society of Japan. 25(4−2). 779–782. 5 indexed citations
3.
Ohnuma, S., N. Kobayashi, Jeong Yong Lee, H. Fujimori, & T. Masumoto. (2001). Soft Magnetic Properties of Multilayered Nano-granular(Co.92Fe.08)-Al-O Film with SiO2.. Journal of the Magnetics Society of Japan. 25(4−2). 871–874. 1 indexed citations
4.
Ohnuma, S., Jeong Yong Lee, N. Kobayashi, T. Masumoto, & H. Fujimori. (2000). Soft Magnetic Properties of (Fe,Co)-Oxide Based Films with High Bs and .RHO... Journal of the Magnetics Society of Japan. 24(4−2). 691–694. 2 indexed citations
5.
Kobayashi, N., S. Ohnuma, T. Masumoto, & H. Fujimori. (2000). Tunnel-type Magnetoresistance in Metal-fluoride Nano-granular Films.. Journal of the Magnetics Society of Japan. 24(4−2). 571–574. 10 indexed citations
6.
Kobayashi, N., S. Ohnuma, Shuichi Murakami, T. Masumoto, & H. Fujimori. (1999). Enhancing the Low-Field-Magnetoresistive Response in Metal-Nonmetal Granular Films.. Journal of the Magnetics Society of Japan. 23(4−2). 1329–1332. 2 indexed citations
7.
Asami, K., Seiji Mitani, H. Fujimori, S. Ohnuma, & T. Masumoto. (1999). Characterization of Co-Al-O magnetic thin films by combined use of XPS, XRD and EPMA. Surface and Interface Analysis. 28(1). 250–253. 10 indexed citations
8.
Ганьшина, Е. А., et al.. (1999). Magneto-optical spectra of insulating granular system Co–Al–O. Journal of Magnetism and Magnetic Materials. 203(1-3). 241–243. 3 indexed citations
9.
Ohnuma, S., N. Kobayashi, T. Masumoto, & H. Fujimori. (1998). Soft Magnetic Properties of Co-Fe-Al-O Thin Films with High Bs. Journal of the Magnetics Society of Japan. 22(4_2). 441–444. 9 indexed citations
10.
Kobayashi, N., S. Ohnuma, T. Masumoto, & H. Fujimori. (1998). Giant Magnetoresistance of Metal-Nonmetal Films with Nano-Granular Structure. Journal of the Magnetics Society of Japan. 22(4_2). 581–584. 18 indexed citations
11.
Kobayashi, N., S. Ohnuma, Shuichi Murakami, et al.. (1998). Enhancement of low-field-magnetoresistive response of tunnel-type magnetoresistance in metal–nonmetal granular thin films. Journal of Magnetism and Magnetic Materials. 188(1-2). 30–34. 51 indexed citations
12.
Kobayashi, N., S. Ohnuma, T. Masumoto, S. Mitani, & H. Fujimori. (1997). Giant Magnetoresistance in (Fe, Co)-X-O (X=Y, Nd, Sm, Gd, Tb, Dy) Nano-Granular Films. Journal of the Magnetics Society of Japan. 21(4_2). 461–464. 19 indexed citations
13.
Mitani, S., Yoshihiro Shintani, S. Ohnuma, & H. Fujimori. (1997). Giant Magnetoresistance and Hall Effect in Fe-Based Metal-Oxide Granular Thin Films. Journal of the Magnetics Society of Japan. 21(4_2). 465–468. 20 indexed citations
14.
Mitani, Seiji, H. Fujimori, & S. Ohnuma. (1997). Spin-dependent tunneling phenomena in insulating granular systems. Journal of Magnetism and Magnetic Materials. 165(1-3). 141–148. 165 indexed citations
15.
Ohnuma, S., S. Mitani, H. Fujimori, & T. Masumoto. (1996). Soft Magnetic Properties at High Frequencies of Co-Al-O Films with Granular Structure.. Journal of the Magnetics Society of Japan. 20(2). 489–492. 11 indexed citations
16.
Kobayashi, N., S. Ohnuma, H. Fujimori, & T. Masumoto. (1996). Soft Magnetic Properties of Highly Electrically Resistive Fe-X-O (X=Y,Nd,Sm,Gd,Tb,Dy) Films.. Journal of the Magnetics Society of Japan. 20(2). 469–472. 22 indexed citations
17.
Ohnuma, S., et al.. (1993). Relationship between Deposition Conditions and the Magnetic Properties of Highly Resistive Fe-BN Films.. Journal of the Magnetics Society of Japan. 17(2). 339–344. 5 indexed citations
18.
Shirakawa, K., et al.. (1993). Thin Film Inductor with Multilayer Magnetic Core. IEEE Translation Journal on Magnetics in Japan. 8(3). 169–176. 5 indexed citations
19.
Ohnuma, S., F. Matsumoto, H. Fujimori, & T. Masumoto. (1992). Soft Magnetic Properties of FeN/FeBN Multi-layers. IEEE Translation Journal on Magnetics in Japan. 7(11). 896–901. 1 indexed citations
20.
Kaneko, T., K. Shirakawa, S. Ohnuma, et al.. (1981). Pressure effect on the magnetic and electric properties of Fe-Zr amorphous alloys. Journal of Applied Physics. 52(3). 1826–1828. 15 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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