Wang, L., Ge, J., Peng, E., Wu, Y., Wang, Y., Lei, Y., Dong, Y., Yang, Q., Luo, Z., Li, J., Li, C. (2026). A Critical Strain Window for Stabilizing Polar Orthorhombic Hf 0 . 5 Zr 0 . 5 O 2 Epitaxial Thin Films with Scale‐Free Domain Walls. Advanced Materials. https://doi.org/10.1002/adma.202521362