The bibliometric data used to construct the citation-based metrics underpinning the ranking were collected on January 12, 2026. Each scientist's position in the ranking is determined by their D-index (Discipline H-index), a metric that isolates a researcher's output and citation performance specifically within the discipline under examination, in this case, Materials Science. This approach ensures that the ranking reflects discipline-focused scientific impact rather than aggregate career citations across multiple fields.
Scope of Research and Eligibility Criteria
In developing the ranking, 279,971 scientist profiles were analyzed across a diverse range of scientific disciplines using aggregated bibliometric data. From this extensive pool, only 2 scientists specializing in Materials Science in Kazakhstan met the rigorous qualification standards set for this ranking.
To qualify, a scientist’s D-index had to be at least 40, and a majority of their tier publications needed to fall within the Materials Science discipline. Furthermore, scientists’ awards and achievements within the field were considered to validate their recognition and contributions to the discipline.
The threshold for the D-index is systematically adjusted in increments of 10 according to the total number of scholars estimated per discipline. This adaptive threshold ensures that at least the top 1% of leading researchers in a discipline are included, maintaining both exclusivity and representativeness of top scholarly talent. Additionally, to capture discipline-centric impact reliably, the ranking incorporates only those scientists whose general H-index diverges by no more than 30% from their Materials Science D-index, thereby ensuring a close proximity between overall and discipline-specific research excellence.
Verification Practices and Methodology Transparency
The team behind this ranking recognizes that raw bibliometric data alone cannot serve as an absolute measure of scholarly impact or merit. Therefore, all scientist profiles were subjected to rigorous manual verification and cross-correlation against verified publications indexed in a wide array of trustworthy sources.
While not directly influencing the ranking positions, the quantity of publications in prominent journals and conference proceedings was utilized as a valuable secondary indicator of scientific contribution within Materials Science. This multi-dimensional approach strengthens the credibility of the assessment and guards against potential data anomalies.
Positions in the ranking are solely established based on each researcher’s D-index, underpinned by data from OpenAlex and CrossRef — the most recognized and authoritative bibliometric databases accessible to the international scientific community.
For a detailed exploration of the methodology employed in this ranking, we invite readers to visit our methodology page.
Research.com’s Mission and Purpose
At Research.com, our mission is to inspire researchers, industry stakeholders, and policymakers worldwide by providing clear visibility into where the leading experts in science and technology are directing their efforts. By elucidating who the foremost contributors are in specific fields — whether by country or institution — we aim to foster collaboration, informed decision-making, and strategic investment in research and innovation.
This ranking represents more than a catalog of individual achievements; it is a meticulously crafted tool designed to elevate the collective understanding of scientific leadership in Materials Science in Kazakhstan, promoting excellence and guiding the evolution of this vital discipline.
