Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00086 : Suitability of MO precursors for hybrid MBE using TGA*
Presenter:
Benazir Fazlioglu Yalcin
(Pennsylvania State University)
Authors:
Benazir Fazlioglu Yalcin
(Pennsylvania State University)
Roman Engel-Herbert
(Paul Drude Institute)
Collaboration:
Engel-Herbert Research Group
The procedure on how to accurately utilize MO precursors depends exceedingly on the temperature at which a precursor should be held for sufficient vapor pressure. An excellent source for this is vapor pressure versus temperature curves which can be determined via thermogravimetric analysis (TGA) using the Langmuir equation. Due to its thermal stability and very well-known pressure values at temperatures most MO substances evaporate and decompose, benzoic acid was used as the calibration standard. Later, the vapor pressures of the MO precursors such as TTIP, VTIP, Ta(V)n-butoxide, Hf(IV)tert-butoxide, Zr(IV)tert-butoxide were calculated based on this calibration. The suitability of these precursors and their tendency to generate nonvolatile residues at high temperatures will be discussed along with their prospects to utilize them in hMBE systems.
1. Jalan, B., et al., J. Vac. Sci. Technol. A Vacuum, Surfaces, Film. 27, 461–464 (2009).
2. Brahlek, M. et al. Adv. Funct. Mater. 28, 1–41 (2018).
*NSF - DMR-1905861
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