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 G32: Functional Oxides: Surfaces, Modification and Growth
11:30 AM–2:18 PM,
Tuesday, March 7, 2023
Room: Room 224
Sponsoring
Unit:
DCMP
Chair: Marcel Meyer, Delft University of Technology
Abstract: G32.00007 : Stoichiometric control and optical properties of BaTiO3 thin films grown by hybrid MBE*
12:42 PM–12:54 PM
Presenter:
Benazir Fazlioglu Yalcin
(Pennsylvania State University)
Authors:
Benazir Fazlioglu Yalcin
(Pennsylvania State University)
Albert C Suceava
(Pennsylvania State University)
Tatiana A Kuznetsova
(Pennsylvania State University)
Venkatraman Gopalan
(Pennsylvania State University)
Roman Engel-Herbert
(Paul Drude Institute)
Collaboration:
Engel-Herbert Research Group, Gopalan Research Group
hMBE growth of BaTiO3 thin films was performed using a solid elemental Ba source and a metal-organic precursor (Titanium(IV) isopropoxide) that was supplied via a gas inlet system. A series of thin films were grown on LSAT, GdScO3 (110), and SrNbO3 which was sputtered on GdScO3 (110) as a transparent bottom electrode. In this talk, we will discuss the samples grown within the hMBE growth window which yielded films with constant out-of-plane lattice parameters and atomically smooth surface morphologies by XRD, RHEED, and AFM; as well as bulk-like optical constants (n, k) and coefficients by ellipsometry and SHG. This work demonstrates a large avenue to a lead-free ferroelectric for nonvolatile memories and electro-optic devices.
[1] K. J. Choi et al., Science (80-. )., vol. 306, no. 5698, pp. 1005–1009, 2004.
[2] R. C. Haislmaier et al., Adv. Funct. Mater., vol. 26, no. 40, pp. 7271–7279, 2016.
*US Department of Energy, Office of Science, Basic Energy Sciences, Award Number DE-SC0020145
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