Data Sources and Citation Metrics
The 5th edition of the Research.com Best Materials Science Scientists in Spain Ranking is grounded on comprehensive bibliometric data derived primarily from OpenAlex and CrossRef, alongside multiple other trusted data sources. These platforms are among the most prominent and widely used bibliometric databases within the research community, offering extensive coverage of scholarly publications and citations. The citation-based metrics employed in constructing this ranking were compiled on January 12, 2026, ensuring the data reflects the most current scholarly output available at the time of analysis.
A researcher’s position within the ranking is determined by their D-index (Discipline H-index), a tailored bibliometric indicator that includes only publications and citation records relevant to the specific discipline under examination—in this case, Materials Science. This discipline-focused approach provides a nuanced and equitable evaluation of scholarly impact within the field.
Scope of Research and Ranking Inclusion Criteria
The ranking evaluated a total of 279,971 scientist profiles identified from diverse bibliometric sources spanning all academic disciplines, with a focused examination of 263 scientists specializing in Materials Science. To be eligible for inclusion, a scientist was required to have a D-index of at least 40, alongside a majority of their tier publications concentrated within the field of Materials Science. Additionally, awards and notable achievements in Materials Science were incorporated as qualitative factors enhancing the robustness of the evaluation.
The threshold for the D-index varies by discipline, increased in increments of 10 relative to the estimated total number of scholars in the field, thereby ensuring that approximately the top 1% of leading researchers are captured in the ranking. Furthermore, to maintain discipline-specific relevance, the allowable variance between a scientist’s general H-index and their D-index was limited to 30% or less, guaranteeing a close alignment between overall impact and discipline-focused performance.
Additional Verification and Methodological Rigor
Understanding that raw bibliometric data cannot serve as an absolute measure for scholarly evaluation, Research.com employed rigorous manual verification processes. Each scientist's profile was carefully cross-checked against publications listed in an extensive range of reputable sources and databases to validate authenticity and accuracy. While the number of papers published in high-impact journals and leading conference proceedings does not directly influence the ranking position, it remains a valuable secondary indicator of a researcher’s contribution and leadership within Materials Science.
The ranking’s foundation rests on the D-index calculated from data harvested primarily from OpenAlex and CrossRef, bolstering the credibility and transparency of the methodology. For researchers and institutions seeking a comprehensive understanding of the ranking’s construction and data processing, we encourage a visit to our methodology page.
Research.com’s Mission and Vision Behind the Ranking
At Research.com, our mission is to inspire researchers, corporations, and policymakers globally to explore the trajectories of leading experts across disciplines. We aim to provide the scientific community with an authoritative and transparent means of identifying top scholars in specific areas of study, within individual countries, and across research institutions. This ranking represents the culmination of meticulous work and rigorous data analysis, designed to foster visibility, collaboration, and informed decision-making within the global science ecosystem.
