R. S. Freitas

2.8k total citations · 1 hit paper
76 papers, 2.2k citations indexed

About

R. S. Freitas is a scholar working on Electronic, Optical and Magnetic Materials, Condensed Matter Physics and Materials Chemistry. According to data from OpenAlex, R. S. Freitas has authored 76 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 56 papers in Electronic, Optical and Magnetic Materials, 53 papers in Condensed Matter Physics and 30 papers in Materials Chemistry. Recurrent topics in R. S. Freitas's work include Advanced Condensed Matter Physics (46 papers), Magnetic and transport properties of perovskites and related materials (35 papers) and Multiferroics and related materials (19 papers). R. S. Freitas is often cited by papers focused on Advanced Condensed Matter Physics (46 papers), Magnetic and transport properties of perovskites and related materials (35 papers) and Multiferroics and related materials (19 papers). R. S. Freitas collaborates with scholars based in Brazil, United States and Argentina. R. S. Freitas's co-authors include P. Schiffer, L. Ghivelder, Ruifang Wang, W. McConville, Nitin Samarth, Cristiano Nisoli, Chris Leighton, M. S. Lund, Vincent H. Crespi and Benjamin Cooley and has published in prestigious journals such as Nature, Journal of the American Chemical Society and Physical Review Letters.

In The Last Decade

R. S. Freitas

73 papers receiving 2.2k 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.

Artificial ‘spin ice’ in a geometrically frustrated lattice of nanoscale ferromagnetic islands

2006 627 citations Ruifang Wang, Cristiano Nisoli et al. Nature profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
R. S. Freitas Brazil	24	1.6k	1.3k	750	382	157	76	2.2k
Raivo Stern Estonia	25	1.3k 0.8×	1.0k 0.8×	706 0.9×	564 1.5×	440 2.8×	114	2.4k
Aleksey N. Kolmogorov United States	25	993 0.6×	447 0.4×	1.8k 2.5×	499 1.3×	248 1.6×	55	2.6k
W.A. Ortiz Brazil	21	946 0.6×	549 0.4×	465 0.6×	493 1.3×	189 1.2×	149	1.6k
Juscelino B. Leão United States	23	690 0.4×	899 0.7×	702 0.9×	248 0.6×	120 0.8×	68	1.7k
Martin Lüders United Kingdom	18	994 0.6×	701 0.6×	735 1.0×	485 1.3×	113 0.7×	33	1.7k
S. Raymond France	30	2.2k 1.4×	1.7k 1.4×	422 0.6×	497 1.3×	192 1.2×	151	2.9k
Kōji Kosuge Japan	28	2.0k 1.3×	1.5k 1.2×	670 0.9×	402 1.1×	437 2.8×	138	3.1k
Th. Wolf Germany	30	2.8k 1.8×	1.8k 1.4×	583 0.8×	1.0k 2.6×	234 1.5×	190	3.6k
Branton J. Campbell United States	24	943 0.6×	1.4k 1.1×	1.3k 1.7×	161 0.4×	377 2.4×	56	2.3k
M.S. Reis Brazil	25	784 0.5×	1.3k 1.0×	1.1k 1.4×	372 1.0×	111 0.7×	121	2.0k

Countries citing papers authored by R. S. Freitas

Since Specialization

Citations

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

Fields of papers citing papers by R. S. Freitas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R. S. Freitas

This figure shows the co-authorship network connecting the top 25 collaborators of R. S. Freitas. A scholar is included among the top collaborators of R. S. Freitas 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 R. S. Freitas. R. S. Freitas 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

López‐Castillo, Alejandro, et al.. (2023). Urea Decomposition Mechanism by Dinuclear Nickel Complexes. Molecules. 28(4). 1659–1659. 11 indexed citations

Otubo, Larissa, et al.. (2021). Crystalline and magnetic properties of CoO nanoparticles locally investigated by using radioactive indium tracer. Scientific Reports. 11(1). 21028–21028. 16 indexed citations

Pinto, Rafael Henrique Holanda, et al.. (2020). High-saturation magnetization in small nanoparticles of Fe3O4 coated with natural oils. Journal of Nanoparticle Research. 22(3). 17 indexed citations

Schell, Juliana, et al.. (2017). Cd and In-doping in thin film SnO2. Journal of Applied Physics. 121(19). 6 indexed citations

Dun, Zhiling, R. S. Freitas, Clarina dela Cruz, et al.. (2016). Antiferromagnetic order in the pyrochlores R$_{2}$Ge$_{2}$O$_{7}$ (R = Er, Yb). Bulletin of the American Physical Society. 2016. 2 indexed citations

Freitas, R. S., et al.. (2016). Properties of Gd2O3 nanoparticles studied by hyperfine interactions and magnetization measurements. AIP Advances. 6(5). 24 indexed citations

Fleming, Felipe P., et al.. (2015). Phase Behavior of CO2-Rich Live Oil Samples From High Pressure Reservoirs. OTC Brasil. 12 indexed citations

Santos, Thiago C. dos, et al.. (2015). Guanidine-functionalized Fe₃O₄ magnetic nanoparticles as basic recyclable catalysts for biodiesel production. RSC Advances. 5(59). 48031–48038. 53 indexed citations

Freitas, R. S., A. Paduan‐Filho, & C. C. Becerra. (2014). Magnetic phase diagram of the low-anisotropy antiferromagnet Cs2FeCl5·H2O. Journal of Magnetism and Magnetic Materials. 374. 307–310. 3 indexed citations

10.

Frem, Regina C. G., Patrícia Bento da Silva, R. S. Freitas, et al.. (2013). Supramolecular assemblies and magnetic behaviors of the M(II)/p-aminopyridine/malonate (M=Ni, Mn, Cu, Co) systems. Polyhedron. 57. 112–117. 4 indexed citations

11.

Marques, Lippy F., Patrícia Bento da Silva, Cecília C. P. da Silva, et al.. (2013). Synthesis, crystal structure and photoluminescence of a binuclear complex of europium(III) containing 3,5-dicarboxypyrazolate and succinate. Polyhedron. 54. 1–7. 18 indexed citations

12.

Freitas, R. S. & J. S. Gardner. (2011). The magnetic phase diagram of Gd₂Sn₂O₇. Journal of Physics Condensed Matter. 23(16). 164215–164215. 6 indexed citations

13.

ElMassalami, M., Roberto Moreno, Hiroyuki Takeya, et al.. (2009). Magnetic structures of quaternary intermetallic borocarbides RCo₂B₂C (R = Dy, Ho, Er). Journal of Physics Condensed Matter. 21(43). 436006–436006. 4 indexed citations

14.

Nisoli, Cristiano, R. S. Freitas, W. McConville, et al.. (2007). Artificial spin ice in a geometrically frustrated lattice of nanoscale ferromagnetic islands: addendum. Nature. 446(7131). 102. 1 indexed citations

15.

Xu, Zhu‐An, Xiangfan Xu, R. S. Freitas, et al.. (2007). Magnetic, electrical transport, and thermoelectric properties ofSr4Ru3O10: Evidence for a field-induced electronic phase transition at low temperatures. Physical Review B. 76(9). 14 indexed citations

16.

Wang, Ruifang, Cristiano Nisoli, R. S. Freitas, et al.. (2006). Artificial ‘spin ice’ in a geometrically frustrated lattice of nanoscale ferromagnetic islands. Nature. 439(7074). 303–306. 627 indexed citations breakdown →

17.

Freitas, R. S., J. F. Mitchell, & P. Schiffer. (2005). Magnetodielectric consequences of phase separation in the colossal magnetoresistance manganitePr0.7Ca0.3MnO3. Physical Review B. 72(14). 72 indexed citations

18.

Freitas, R. S., et al.. (2004). Magnetization Steps in Phase Separated La0.5Ca0.5Mn1−yFe y O3. Journal of Low Temperature Physics. 135(1-2). 111–114. 4 indexed citations

19.

Freitas, R. S., L. Ghivelder, Joaquín Sacanell, P. Lévy, & F. Parisi. (2004). Magnetoresistance in phase-separated La0.5Ca0.5MnO3 manganite. Journal of Magnetism and Magnetic Materials. 272-276. 1745–1747. 4 indexed citations

20.

Branford, W. R., S. K. Clowes, Yu.V. Bugoslavsky, et al.. (2004). Thickness dependence of Hall transport inNi1.15Mn0.85Sbthin films on silicon. Physical Review B. 69(20). 7 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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