Polycrystals
, , and . "Intrinsic effective piezoelectric coefficient e 31,f for ferroelectric thin films." Applied Physics Letters 86 (2005) 1–3.
, , , and . "Laser deposition of biaxially textured yttria‐stabilized zirconia buffer layers on polycrystalline metallic alloys for high critical current Y‐Ba‐Cu‐O thin films." Applied Physics Letters 61.18 (1992) 2231–2233.