Unleashing the Full Potential of Magnetoelectric Coupling in Film Heterostructures

Haribabu Palneedi; Deepam Maurya; Gi-Yeop Kim; Venkateswarlu Annapureddy; Myoung-Sub Noh; Chong-Yun Kang; Jong-Woo Kim; Jong-Jin Choi; Si-Young Choi; Sung-Yoon Chung; Suk-Joong L Kang; Shashank Priya; Jungho Ryu

doi:10.1002/adma.201605688

Unleashing the Full Potential of Magnetoelectric Coupling in Film Heterostructures

Adv Mater. 2017 Mar;29(10). doi: 10.1002/adma.201605688. Epub 2017 Jan 9.

Authors

Haribabu Palneedi^{1

2}, Deepam Maurya³, Gi-Yeop Kim⁴, Venkateswarlu Annapureddy², Myoung-Sub Noh⁵, Chong-Yun Kang^{5

6}, Jong-Woo Kim², Jong-Jin Choi², Si-Young Choi⁴, Sung-Yoon Chung⁷, Suk-Joong L Kang^{1

8}, Shashank Priya³, Jungho Ryu²

Affiliations

¹ Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea.
² Functional Ceramics Group, Korea Institute of Materials Science (KIMS), Changwon, 51508, South Korea.
³ Bio-Inspired Materials and Devices Laboratory (BMDL), Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, VA, 24061, USA.
⁴ Materials Modeling and Characterization Department, Korea Institute of Materials Science (KIMS), Changwon, 51508, South Korea.
⁵ Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea.
⁶ KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, South Korea.
⁷ Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea.
⁸ Korea Institute of Ceramic Engineering and Technology (KICET), Jinju, 52851, South Korea.

PMID: 28067958
DOI: 10.1002/adma.201605688

Abstract

A record-high, near-theoretical intrinsic magnetoelectric (ME) coupling of 7 V cm^-1 Oe^-1 is achieved in a heterostructure of piezoelectric Pb(Zr,Ti)O₃ (PZT) film deposited on magnetostrictive Metglas (FeBSi). The anchor-like, nanostructured interface between PZT and Metglas, improved crystallinity of PZT by laser annealing, and optimum volume of crystalline PZT are found to be the key factors in realizing such a giant strain-mediated ME coupling.

Keywords: Metglas; PZT; composites; heterostructures; magnetoelectricity.