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Meeting 2027 TMS Annual Meeting & Exhibition
Symposium 2D Materials – Preparation, Properties, Modeling & Applications
Presentation Title Synthesis and Processing of Boron-Doped Q-Carbon Films with Superconducting Behavior
Author(s) Nikita Goswami, Siba Sahoo, Jagdish Narayan
On-Site Speaker (Planned) Nikita Goswami
Abstract Scope Carbon-based materials have received continual scientific interest because of their potential for high-temperature superconductivity. In this work, boron-doped Q-carbon films were synthesized using pulsed laser deposition followed by nanosecond laser melting and rapid quenching. This non-equilibrium, laser-assisted synthesis enables boron incorporation into substitutional sites well beyond the thermodynamic solubility limits, enhancing free carrier concentration and density of states near the Fermi level. The effects of laser deposition and processing parameters on film growth and structural evolution were investigated. Under optimized processing conditions, boron-doped Q-carbon phases containing 33 at.% boron and 50 at% boron exhibited superconducting transition temperatures of 112 K and 164 K, respectively. HRTEM and SIMS measurements were performed to confirm laser-induced melting and boron concentration in the films. These findings demonstrate the dependance of superconducting behavior on laser synthesis parameters, establishing laser parameter optimization as a key strategy for engineering boron-doped Q-carbon films with enhanced superconducting properties.
Proceedings Inclusion? Planned:
Keywords Thin Films and Interfaces, Characterization, Nanotechnology

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