Superconducting Amorphous Thin Films Offer Applications in Modern Quantum Technology
Recent breakthroughs in superconductivity research have revealed promising opportunities for future technologies in fields such as electronics, energy, and beyond.
Partial view of a futuristic train levitating above a glowing blue rail.

Superconducting amorphous TiNiSn alloys open new avenues in quantum technology.
Our Head of Components, José Barzola Quiquia, was recently involved in a study exploring the superconducting properties of amorphous TiNiSn films at low temperatures.

Key Findings of the Research

Superconductivity at Low Temperatures
The study demonstrates that amorphous TiNiSn thin films exhibit superconducting behavior when cooled to liquid helium temperatures. The critical transition temperature (Tc) reaches up to 4.1 K, depending on the thermal treatment. This behavior indicates strong electron-phonon coupling – a key factor in understanding superconductivity in this material.

Stability and Structure
Amorphous TiNiSn thin films are remarkably stable, thanks to electronically stabilized Hume-Rothery phases in which hybridization between Ti-dd and Ni-dd orbitals plays a central role. Upon crystallization at around 785 K, the material forms an ordered half-Heusler phase with an unusual atomic structure (TiNiSn instead of the more common NiTiSn configuration). This ability to switch between amorphous and crystalline states opens up exciting possibilities for tailoring material properties.

Potential Applications and Impact

Although research is still in its early stages, the unique properties of amorphous TiNiSn thin films could drive innovation in various fields:

• Electronic Components and Sensors: The exceptional electrical properties of amorphous TiNiSn may pave the way for advancements in high-frequency and quantum components. This includes sensitive sensors or superconducting transistors optimized for ultra-low energy loss.

• Energy Transmission & Storage: Superconducting materials enable lossless power transmission – particularly in specialized applications where maximum efficiency is essential.

• Medical Technology: Advanced superconducting magnets could enhance the performance of MRI (Magnetic Resonance Imaging) systems, enabling more precise diagnostics.

• Thermoelectric Generators: The material’s unique electronic structure may increase energy conversion efficiency, contributing to more powerful and sustainable thermoelectric generators.

At FHR Anlagenbau GmbH, we support pioneering research with our highly developed vacuum coating systems. These systems allow for the precise fabrication of amorphous TiNiSn thin films, which stand out due to their stability and exceptional characteristics. Through close collaboration with scientists and industrial partners, we contribute to translating emerging technologies from research into practical applications.