Hafnium (Hf) is a transition metal with atomic number 72: a neutral hafnium atom has 72 protons and 72 electrons. Atomic mass 178.49 u, electron configuration [Xe] 4f14 5d2 6s2. Hafnium is a corrosion-resistant metal used in nuclear reactor control rods.
As of 2026-09-25 · the last 10 years
Hafnium’s research intensity has settled at about 84% of its all-time peak, a level it has maintained since the element’s historic high in 2011.
Research intensity ran from about 95% of the element's own all-time peak in 2016 to about 84% in 2026 — a steady decline, and the all-time peak (2011) lies before this window. Over the same span its share of research attention across all elements fell. Among the 118 elements, hafnium has a mid-sized research literature.
The number of papers involving the element rose from about 1,874 in 2016 to about 3,964 in 2025 (2.12x). That matches the growth of the literature as a whole over the same years: the general tide of scientific output, not a surge specific to the element.
The dominant research community is Hafnium Zirconium Oxide Ferroelectrics for Negative Capacitance. These papers focus on hafnium zirconium oxide thin films exhibiting ferroelectricity and negative capacitance for transistor applications, with distinctive work on HfO2 thin films and hafnium zirconium oxide systems. Hafnium is one strand of a broader community -- about 18% of its papers involve hafnium. This community accounts for about 55% of the element's recent research, a share that has remained steady over the last decade. The field’s most influential work includes "The fundamentals and applications of ferroelectric HfO2" (2022), cited over 700 times, and "Ultrathin ferroic HfO2–ZrO2 superlattice gate stack for advanced transistors" (2022), cited over 360 times.
A smaller, steady community focuses on Ultra-High-Temperature Carbide and Nitride Ceramics for Thermal Protection. This area represents about 3% of hafnium’s recent research. Key work here includes "From molecular precursors to ultra-high temperature ceramics: A novel synthesis of hafnium carbonitride nanoceramics" (2025), cited about 29 times.
Finally, Hafnium Isotope Systematics in Continental Crust Studies makes up about 2.5% of the element's research. These papers analyze hafnium isotopic compositions in zircons to trace the evolution and sources of continental crust. Hafnium is a minor presence in a much larger community -- about 1% of its papers involve hafnium. Notable research includes "Trace elements in zircon record changing magmatic processes and the multi-stage build-up of Archean proto-continental crust" (2024), cited about 34 times.
The composition of hafnium research has remained remarkably stable, with the ferroelectric community holding the majority share and other areas maintaining their smaller proportions. The window's most-cited paper, "The fundamentals and applications of ferroelectric HfO2," is already highlighted within the main community discussion.
For a deeper look at hafnium's current standing, see the Last 12 Months or Executive Brief reports.
What changed in the past year: new papers, shifting applications, emerging collaborators. See the momentum over a shorter window than the decade view.
Personal →See recent trends — Personal.
A by-topic status read of what changed and what's new — built for decision-makers, not search engines. Citation clusters, emerging applications, and the papers that matter most.
Professional →See the executive read — Professional.
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