Abstract
We describe a sensor for measuring the electrical resistance of a conducting thin-film material as a function of temperature and composition. The sensor has excellent sensitivity and can be used at temperatures as high as the melting temperature of the material of interest. The sensor is fabricated by applying a simple lift-off process to a thin film. By combining combinatorial sputtering to fabricate composition spreads with arrays of sensors, the phase transformation behavior of complex alloys can be mapped. We demonstrate this capabilities by using the sensor to determine the glass transition and crystallization temperatures of several PdSiCu-based metallic glasses. We found that in two glass-forming systems, PdCuSi and NiZr, the ratio of the resistance of the crystallized to as-deposited material is correlated with the glass-forming ability. The ability to readily determine glass forming ability, suggests that the sensor is a powerful tool for measuring the glass-forming ability in a high-throughput manner over large compositional spaces.
Original language | English |
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Pages (from-to) | 486-495 |
Number of pages | 10 |
Journal | Acta Materialia |
Volume | 156 |
Early online date | 5 Jul 2018 |
DOIs | |
Publication status | Published - 1 Sept 2018 |
Externally published | Yes |
Bibliographical note
This work was supported by the Air Force Office of Sponsored Research under Grant FA9550-16-1-0180 from the Aerospace Materials for Extreme Environments Program. It was performed in part at the Center for Nanoscale Systems at Harvard University, which is supported by the National Science Foundation under Award No. ECS-0335765, and at the Materials Research Science and Engineering Center at Harvard University, which is supported by the National Science Foundation under Award No. DMR-14-20570. HZ acknowledges the Academic Exchange Special Fund at the University of Electronic Science and Technology of China. YX acknowledges the National Science Funds of China (Contract No. 51472044), Program for New Century Excellent Talent in University (Contract No. NCET-12-0098). JS was supported by supported by the U. S. Department of Energy through the Office of Science, Basic Energy Sciences, Materials Science and Engineering Division (No. DE SC0004889). JJV also acknowledges funding from the National Science Foundation (DMR-14-35820).Keywords
- Glass forming ability
- Glass transition
- High-throughput characterization
- Metallic glasses
- Resistance-temperature sensor