Jordan A. Hachtel

Correlating biaxial stress to metastable phases in Hf0.5Zr0.5O2 on substrates with different coefficients of thermal expansion

The effects of biaxial stress in hafnium zirconium oxide (HZO) thin films on the phase constitution and dielectric response are studied through the preparation of HZO films on substrates with coefficients of thermal expansion (CTE) ranging from 0.52 to 12.97 × 10−6 K−1. X-ray dif...

Antiferroelectric hafnia down to the 2D limit

Antiferroelectricity is a material property characterized by alternating electric dipoles spontaneously ordered in antiparallel directions. Antiferroelectrics are promising for energy storage, solid-state cooling, and memory technologies; however, these materials are scarce, and...