Abstract
AbstractLead zirconate titanate (Pb (Zrx, Ti1−x)O3: PZT) is a well-known ferroelectric compound, in which long-range polar order is usually developed. In the present study, it was clarified by distortion-corrected atomic-scale scanning transmission electron microscopy imaging that long-range polar order is disrupted in PZT by utilizing composition-modulated superlattice. Shape of unit cell was unusual both in the Pb(Zr0.65Ti0.35)O3 (PZT65) and Pb(Zr0.30Ti0.70)O3 (PZT30) layers, which was due to mutual in-plane lattice constraint. By taking account of this, first-principles calculations clarified that multiple directions can be energetically favorable for lead-ion displacement, which explains a reason why long-range polar order was disrupted.
Funder
Japan Society for the Promotion of Science
Publisher
Springer Science and Business Media LLC
Reference39 articles.
1. Arlt G, Hwnnings D, De With G (1985) Dielectric properties of fine-grained barium titanate ceramics. J Appl Phys 58:1619–1625
2. Schönau KA, Schmitt LA, Knapp M, Fuess H, Eichel RA, Kungl H, Hoffmann MJ (2007) Nanodomain structure of Pb[Zr1−xTix]O3 at its morphotropic phase boundary: investigations from local to average structure. Phys Rev B 75:184117-1–184117-10
3. Sato Y, Hirayama T, Ikuhara Y (2014) Monoclinic nanodomains in morphotropic phase boundary Pb(Mg1/3Nb2/3)O3–PbTiO3. Appl Phys Lett 104:082905-1–082905-5
4. Hilton AD, Barber DJ, Randall CA, Shrout TR (1990) On short range ordering in the perovskite lead magnesium niobate. J Mater Sci 25:3461–3466. https://doi.org/10.1007/BF00575371
5. Kim S, Miyauchi R, Sato Y, Nam H, Fujii I, Ueno S, Kuroiwa Y, Wada S (2023) Piezoelectric actuation mechanism involving extrinsic nanodomain dynamics in lead-free piezoelectrics. Adv Mater 35:2208717-1–2208717-10