J.P. Schaffer

1.1k total citations
29 papers, 862 citations indexed

About

J.P. Schaffer is a scholar working on Mechanics of Materials, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, J.P. Schaffer has authored 29 papers receiving a total of 862 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Mechanics of Materials, 11 papers in Electrical and Electronic Engineering and 11 papers in Materials Chemistry. Recurrent topics in J.P. Schaffer's work include Muon and positron interactions and applications (15 papers), Copper Interconnects and Reliability (7 papers) and Semiconductor materials and devices (7 papers). J.P. Schaffer is often cited by papers focused on Muon and positron interactions and applications (15 papers), Copper Interconnects and Reliability (7 papers) and Semiconductor materials and devices (7 papers). J.P. Schaffer collaborates with scholars based in United States, Switzerland and Czechia. J.P. Schaffer's co-authors include E. J. Shaughnessy, Ira Katz, Stephen D. Antolovich, Steven B. Warner, T. H. Sanders, Ashok Saxena, A. Rohatgi, T. K. Gupta, A.J. Perry and J. Brunner and has published in prestigious journals such as Journal of Applied Physics, Journal of Physics Condensed Matter and Thin Solid Films.

In The Last Decade

J.P. Schaffer

29 papers receiving 813 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J.P. Schaffer United States 12 349 214 202 181 120 29 862
F. Raether Germany 17 286 0.8× 124 0.6× 244 1.2× 120 0.7× 70 0.6× 58 739
R.P. Tye United Kingdom 17 443 1.3× 138 0.6× 320 1.6× 183 1.0× 115 1.0× 71 857
Markus Wegmann Switzerland 12 342 1.0× 204 1.0× 100 0.5× 103 0.6× 198 1.6× 21 859
Sung‐Tae Kim South Korea 20 572 1.6× 451 2.1× 275 1.4× 116 0.6× 129 1.1× 96 1.1k
Tatsuya Tanaka Japan 20 296 0.8× 126 0.6× 486 2.4× 317 1.8× 171 1.4× 121 1.8k
Rayner M. Mayer United Kingdom 16 581 1.7× 217 1.0× 314 1.6× 126 0.7× 63 0.5× 44 1.0k
J. Blažek Czechia 14 222 0.6× 299 1.4× 161 0.8× 215 1.2× 64 0.5× 47 616
J. R. Gladden United States 14 352 1.0× 179 0.8× 94 0.5× 144 0.8× 112 0.9× 37 805
Jing Gui United States 18 686 2.0× 219 1.0× 304 1.5× 472 2.6× 102 0.8× 44 1.2k
L. Peter Martin United States 22 390 1.1× 644 3.0× 214 1.1× 144 0.8× 230 1.9× 76 1.3k

Countries citing papers authored by J.P. Schaffer

Since Specialization
Citations

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

Fields of papers citing papers by J.P. Schaffer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.P. Schaffer. 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 J.P. Schaffer. The network helps show where J.P. Schaffer may publish in the future.

Co-authorship network of co-authors of J.P. Schaffer

This figure shows the co-authorship network connecting the top 25 collaborators of J.P. Schaffer. A scholar is included among the top collaborators of J.P. Schaffer 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 J.P. Schaffer. J.P. Schaffer 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.
Schaffer, J.P., et al.. (2016). An analysis of student behavior in two massive open online courses. 380–385. 11 indexed citations
2.
Schaffer, J.P., et al.. (2009). Sports Journalism: An Introduction to Reporting and Writing. 9 indexed citations
3.
Shaughnessy, E. J., Ira Katz, & J.P. Schaffer. (2004). Introduction to fluid mechanics. CERN Document Server (European Organization for Nuclear Research). 309 indexed citations
4.
Weiß, K., et al.. (1997). A Study of Polymer Degradation Using Doppler Broadening Positron Annihilation Spectroscopy. Materials science forum. 255-257. 278–280. 1 indexed citations
5.
Rohatgi, A., et al.. (1995). Photoluminescence study of ZnO varistor stability. Journal of Electronic Materials. 24(4). 413–419. 67 indexed citations
6.
Schaffer, J.P., Ashok Saxena, Stephen D. Antolovich, T. H. Sanders, & Steven B. Warner. (1995). The Science and Design of Engineering Materials. 226 indexed citations
7.
Vaidyanathan, Ranji, et al.. (1993). A Doppler broadening positron annihilation spectroscopy study of magnetically induced recovery in nickel. Journal of Physics Condensed Matter. 5(26). 4563–4572. 2 indexed citations
8.
Perry, A.J., J.P. Schaffer, J. Brunner, & W.D. Sproul. (1991). A study of the picostructure of sputtered ZrN films. Surface and Coatings Technology. 49(1-3). 188–193. 16 indexed citations
9.
Hochman, R. F., et al.. (1990). A positron annihilation spectroscopy investigation of magnetically induced changes in defect structures. Journal of Physics Condensed Matter. 2(15). 3629–3642. 7 indexed citations
10.
Schaffer, J.P., A. Rohatgi, Α. Dewald, Robert L. Frost, & Shan Pang. (1989). Positron annihilation spectroscopy: Applications to Si, ZnO, and multilayer semiconductor structures. Journal of Electronic Materials. 18(6). 737–744. 4 indexed citations
11.
Gupta, T. K., et al.. (1989). Grain-boundary characterization of ZnO varistors by positron annihilation spectroscopy. Journal of Applied Physics. 66(12). 6132–6137. 38 indexed citations
12.
Frost, Robert L., Α. Dewald, J.P. Schaffer, et al.. (1988). Slow positron annihilation spectroscopy of heterojunctions and homojunctions of GaAs-based semiconductor thin films. Thin Solid Films. 166. 349–357. 4 indexed citations
13.
Hara, T. & J.P. Schaffer. (1988). An improved method for using Doppler-broadened positron annihilation spectroscopy for the study of the electronic properties of materials. Journal of Physics E Scientific Instruments. 21(6). 595–600. 4 indexed citations
14.
Schaffer, J.P., Α. Dewald, Robert L. Frost, et al.. (1988). Positron annihilation spectroscopy of the defect structure of sputter-deposited TiN. Surface and Coatings Technology. 36(3-4). 593–603. 12 indexed citations
15.
Dewald, Α. & J.P. Schaffer. (1988). A review of position annihilation spectroscopy as a defect and microstructural probe of thin films. Surface and Coatings Technology. 36(3-4). 577–591. 1 indexed citations
16.
Pang, Shan, A. Rohatgi, & J.P. Schaffer. (1987). Effect of oxygen on lifetime and defects in magnetic Czochralski silicon. pvsp. 1500. 1 indexed citations
17.
Jones, P. L., J.P. Schaffer, F. H. Cocks, F.W. Clinard, & G.F. Hurley. (1985). A comparison of the doppler-broadened positron annihilation spectra of neutron irradiated Al2O3 and MgAl2O3. Journal of Nuclear Materials. 127(2-3). 221–224. 3 indexed citations
18.
Schaffer, J.P., et al.. (1984). Hydrogenated Amorphous Boron: Transient and Steady State Photoconductivity. physica status solidi (a). 81(1). K51–K55. 5 indexed citations
19.
Schaffer, J.P., E. J. Shaughnessy, & P. L. Jones. (1984). The deconvolution of Doppler-broadened positron annihilation measurements using fast Fourier transforms and power spectral analysis. Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms. 5(1). 75–79. 16 indexed citations
20.
Schaffer, J.P., et al.. (1982). Photoconductivity of ion-plated amorphous hydrogenated silicon. physica status solidi (a). 71(1). K111–K115. 1 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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