Roger A. De Souza

9.1k total citations · 1 hit paper
176 papers, 7.8k citations indexed

About

Roger A. De Souza is a scholar working on Materials Chemistry, Electronic, Optical and Magnetic Materials and Electrical and Electronic Engineering. According to data from OpenAlex, Roger A. De Souza has authored 176 papers receiving a total of 7.8k indexed citations (citations by other indexed papers that have themselves been cited), including 163 papers in Materials Chemistry, 60 papers in Electronic, Optical and Magnetic Materials and 53 papers in Electrical and Electronic Engineering. Recurrent topics in Roger A. De Souza's work include Electronic and Structural Properties of Oxides (121 papers), Advancements in Solid Oxide Fuel Cells (80 papers) and Magnetic and transport properties of perovskites and related materials (56 papers). Roger A. De Souza is often cited by papers focused on Electronic and Structural Properties of Oxides (121 papers), Advancements in Solid Oxide Fuel Cells (80 papers) and Magnetic and transport properties of perovskites and related materials (56 papers). Roger A. De Souza collaborates with scholars based in Germany, United States and United Kingdom. Roger A. De Souza's co-authors include Manfred Martin, John A. Kilner, Joachim Maier, Amr H. H. Ramadan, Rainer Waser, Derek C. Sinclair, Ming Li, H. R. Zhang, Ian M. Reaney and Stuart N. Cook and has published in prestigious journals such as Journal of the American Chemical Society, Physical Review Letters and Advanced Materials.

In The Last Decade

Roger A. De Souza

173 papers receiving 7.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A family of oxide ion conductors based on the ferroelectric perovskite Na0.5Bi0.5TiO3

2013 784 citations Roger A. De Souza, John A. Kilner et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Roger A. De Souza Germany	50	6.9k	3.0k	2.8k	497	480	176	7.8k
Yu‐Jun Zhao China	45	5.4k 0.8×	2.9k 0.9×	1.4k 0.5×	262 0.5×	790 1.6×	283	7.0k
Jonathan E. Spanier United States	34	5.3k 0.8×	2.7k 0.9×	1.9k 0.7×	1.3k 2.6×	260 0.5×	108	6.6k
Manfred Martin Germany	46	5.3k 0.8×	1.8k 0.6×	1.8k 0.7×	506 1.0×	390 0.8×	206	6.5k
Baodan Liu China	43	4.7k 0.7×	3.0k 1.0×	2.2k 0.8×	1.4k 2.8×	839 1.7×	182	6.6k
Won Bin Im South Korea	47	7.1k 1.0×	5.3k 1.7×	1.0k 0.4×	401 0.8×	287 0.6×	215	8.5k
D. M. Phase India	34	3.4k 0.5×	1.8k 0.6×	2.0k 0.7×	407 0.8×	663 1.4×	310	4.9k
Riikka L. Puurunen Finland	34	4.8k 0.7×	5.5k 1.8×	745 0.3×	650 1.3×	190 0.4×	102	6.8k
Jennifer L. M. Rupp Switzerland	52	5.3k 0.8×	4.9k 1.6×	1.1k 0.4×	848 1.7×	150 0.3×	150	8.5k
H. R. Zhang United States	38	4.1k 0.6×	2.2k 0.7×	1.4k 0.5×	879 1.8×	184 0.4×	114	5.5k
Peter K. Davies United States	45	5.8k 0.8×	4.1k 1.4×	2.9k 1.1×	926 1.9×	933 1.9×	156	7.2k

Countries citing papers authored by Roger A. De Souza

Since Specialization

Citations

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

Fields of papers citing papers by Roger A. De Souza

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roger A. De Souza. 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 Roger A. De Souza. The network helps show where Roger A. De Souza may publish in the future.

Co-authorship network of co-authors of Roger A. De Souza

This figure shows the co-authorship network connecting the top 25 collaborators of Roger A. De Souza. A scholar is included among the top collaborators of Roger A. De Souza 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 Roger A. De Souza. Roger A. De Souza is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Mazilkin, Andrey, et al.. (2025). Unexpectedly High Electronic Partial Conductivity of Porous Yttria-Stabilized Zirconia Thin Films. The Journal of Physical Chemistry C. 129(27). 12585–12594.

Harrington, George F., et al.. (2025). A Tracer Diffusion Study of Diverse Photo‐Ionic Phenomena in Strontium Titanate. Advanced Functional Materials. 36(22). 2 indexed citations

Souza, Roger A. De, et al.. (2024). How space-charge behaviour at grain boundaries in electroceramic oxides is modified by two restricted equilibria. Physical Chemistry Chemical Physics. 26(10). 8287–8298. 4 indexed citations

Kilner, John A., et al.. (2024). Oxygen grain-boundary diffusion in (La,Sr)FeO _{3− δ} perovskite-oxides probed by molecular-dynamics simulations. RSC Applied Interfaces. 1(4). 699–710. 3 indexed citations

Souza, Roger A. De, et al.. (2024). One Stone, Two Birds: Using High Electric Fields to Enhance the Mobility and the Concentration of Point Defects in Ion-Conducting Solids. Journal of the American Chemical Society. 146(7). 4783–4794. 2 indexed citations

Zhou, Hua, et al.. (2024). Transforming an Ionic Conductor into an Electronic Conductor via Crystallization: In Situ Evolution of Transference Numbers and Structure in (La,Sr)(Ga,Fe)O_3‐x Perovskite Thin Films. Advanced Functional Materials. 34(41).

Hatton, P. D., et al.. (2023). The Sluggish Diffusion of Cations in CeO₂ Probed through Molecular Dynamics and Metadynamics Simulations. Advanced Engineering Materials. 25(18). 4 indexed citations

Souza, Roger A. De, et al.. (2023). A general expression for the statistical error in a diffusion coefficient obtained from a solid‐state molecular‐dynamics simulation. Journal of Computational Chemistry. 44(14). 1347–1359. 11 indexed citations

Prakash, Abhinav, et al.. (2022). Quantitative Determination of Native Point‐Defect Concentrations at the ppm Level in Un‐Doped BaSnO₃ Thin Films. Advanced Functional Materials. 32(19). 11 indexed citations

10.

Tarancón, Albert, et al.. (2022). Recipes for superior ionic conductivities in thin-film ceria-based electrolytes. Physical Chemistry Chemical Physics. 24(21). 12926–12936. 5 indexed citations

11.

Souza, Roger A. De, et al.. (2022). Caution! Static Supercell Calculations of Defect Migration in Higher Symmetry ABX₃ Perovskite Halides May Be Unreliable: A Case Study of Methylammonium Lead Iodide. The Journal of Physical Chemistry Letters. 13(49). 11363–11368. 4 indexed citations

12.

Freeman, Colin L., et al.. (2021). Perovskite crystal symmetry and oxygen-ion transport: a molecular-dynamics study of perovskite. Journal of Materials Chemistry A. 10(5). 2388–2397. 22 indexed citations

13.

Gunkel, Felix, et al.. (2021). The importance of singly charged oxygen vacancies for electrical conduction in monoclinic HfO2. Journal of Applied Physics. 129(2). 9 indexed citations

14.

Hensling, Felix V. E., et al.. (2020). Behavior of cation vacancies in single-crystal and in thin-film SrTiO3: The importance of strontium vacancies and their defect associates. Physical Review Materials. 4(12). 11 indexed citations

15.

Hardtdegen, Alexander, et al.. (2020). Cation diffusion in polycrystalline thin films of monoclinic HfO2 deposited by atomic layer deposition. APL Materials. 8(8). 9 indexed citations

16.

Falkenstein, Andreas, Roger A. De Souza, Wilhelm Albert Meulenberg, & Manfred Martin. (2020). A quantitative analysis of two-fold electrical conductivity relaxation behaviour in mixed proton–oxide-ion–electron conductors upon hydration. Physical Chemistry Chemical Physics. 22(43). 25032–25041. 8 indexed citations

17.

Marques, António Cardoso, et al.. (2020). Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test. Journal of Materials Research and Technology. 9(5). 10886–10900. 5 indexed citations

18.

Baeumer, Christoph, Camilla La Torre, Michael Luebben, et al.. (2018). Oxygen Exchange Processes between Oxide Memristive Devices and Water Molecules. Advanced Materials. 30(29). e1800957–e1800957. 65 indexed citations

19.

Gunkel, Felix, et al.. (2016). Pulsed laser deposition of SrRuO3 thin-films: The role of the pulse repetition rate. APL Materials. 4(12). 26 indexed citations

20.

Souza, Roger A. De & Manfred Martin. (2004). Secondary ion mass spectrometry: A powerful tool for diffusion studies in solids. RWTH Publications (RWTH Aachen). 4 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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