Resolving Mechanical Properties and Morphology Evolution of Free‐Standing Ferroelectric Hf0.5Zr0.5O2

The cover illustrates a free-standing, ferroelectric, hafnia-zirconia nano-resonator, realized from 50nm Hf0.5Zr0.5O2 – Al2O3 nanolaminates. Optical excitation and detection of in-plane and out-of-plane resonance modes enables accurate determination of Young’s modulus and residual stress. Further, X-ray diffraction measurements reveal the free-standing film to be predominantly orthorhombic with a robust ferroelectricity. Additional details can be found in article number 2101221 by Troy Tharpe, Xu-Qian Zheng, Philip X.-L. Feng, and Roozbeh Tabrizian.