Palneedi, Haribabu Maurya, Deepam Geng, Liwei D. Song, Hyun-Cheol Hwang, Geon-Tae Peddigari, Mahesh Annapureddy, Venkateswarlu Song, Kyung Oh, Yoon Seok Yang, Su-Chul Wang, Yu U. Priya, Shashank Ryu, Jungho 2024-01-19T23:02:02Z 2024-01-19T23:02:02Z 2021-09-03 2018-04-04 1944-8244 https://pubs.kist.re.kr/handle/201004/121493 Enhanced and self-biased magnetoelectric (ME) coupling is demonstrated in a laminate heterostructure comprising 4 mu m-thick Pb(Zr,Ti)O-3 (PZT) film deposited on 50 mu m-thick flexible nickel (Ni) foil. A unique fabrication approach, combining room temperature deposition of PZT film by granule spray in vacuum (GSV) process and localized thermal treatment of the film by laser radiation, is utilized. This approach addresses the challenges in integrating ceramic films on metal substrates, which is often limited by the interfacial chemical reactions occurring at high processing temperatures. Laser-induced crystallinity improvement in the PZT thick film led to enhanced dielectric, ferroelectric, and magnetoelectric properties of the PZT/Ni composite. A high self-biased ME response on the order of 3.15 V/cm.Oe was obtained from the laser-annealed PZT/Ni film heterostructure. This value corresponds to a similar to 2000% increment from the ME response (0.16 V/cm.Oe) measured from the as-deposited PZT/Ni sample. This result is also one of the highest reported values among similar ME composite systems. The tunability of self-biased ME coupling in PZT/Ni composite has been found to be related to the demagnetization field in Ni, strain mismatch between PZT and Ni, and flexural moment of the laminate structure. The phase-field model provides quantitative insight into these factors and illustrates their contributions toward the observed self-biased ME response. The results present a viable pathway toward designing and integrating ME components for a new generation of miniaturized tunable electronic devices. English American Chemical Society COMPOSITES SIMULATION Enhanced Self-Biased Magnetoelectric Coupling in Laser-Annealed Pb(Zr,Ti)O-3 Thick Film Deposited on Ni Foil Article 10.1021/acsami.7b16706 1 ACS Applied Materials & Interfaces, v.10, no.13, pp.11018 - 11025 ACS Applied Materials & Interfaces 10 13 11018 11025 scie scopus 000429625400045 2-s2.0-85044941965 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article COMPOSITES SIMULATION Pb(Zr,Ti)O-3 nickel laser annealing self-biased magnetoelectric